|
JavaScript - How To Dynamically Create Custom Objects?
Let's say I would want to create a custom object with properties.
The properties would get their values from text input fields. The only thing that I can't get is how to assign variables to the new instances of the object.Here's my go at it: //First create object prototype function Obj(prop1,prop2,prop3) { this.prop1=prop1; this.prop2=prop2; this.prop3=prop3; this.showProps=showProps; //This method will show all props } //Array for storing each object instance var Objects=new Array(),i=-1; //---Now the HTML code <form name="myform" onSubmit="Objects[i++]=new Obj(text1.value,text2.value,text3.value)"> <b>Age:</b><input name="text1"> <b>Sex:</b><input name="text2"> <b>Location:</b><input name="text3"> <input type="submit"> </form> Ok,so knowing that each array element can store anything,including another object I used an Array to store each object instance.But is there any other way of storing objects? like in variables. Similar TutorialsHi, I am a begginer in javascript, please help on below I want to create an object with nested objects array like following: var country{ var states=new array(); } var state { city,pincode } this should be called like var city= country[0].state[0].city; any idea will be appreciated How do I dynamically create a <select> with <options> in Javascript?
Hi, I have the following function to dynamically create an image (in this case a toolbox button): Code: function createButton(srcid,bttn)
{
if (bttn=='mag') {s='Magnify';h='Magnify';o='DoZoom(event,\'0\',\''+srcid+'\')';}
if (bttn=='frz') {s='Pause';h='Freeze/Unfreeze';o='setPicture(\''+srcid+'\',0)';}
if (bttn=='swp') {s='Swap';h='Swap maps';o='setPicture(\''+srcid+'\',2)';}
btn=document.createElement('img');
btn.setAttribute('src','toolbox/'+s+'.gif');
btn.setAttribute('width','16px');
btn.setAttribute('height','16px');
btn.setAttribute('id',bttn+'btn_'+srcid);
btn.setAttribute('class','button');
btn.setAttribute('name','Toolbox');
btn.setAttribute('title',h);
btn.setAttribute('onclick',o);
document.getElementById('ctrlDiv').appendChild(btn);
}
which works fine in IE8 and IE9, but in IE7 it refuses to pick up the style 'button'. I've even tried putting in btn.class='button' but JS throws up an error. If I specify the style by btn.style.position='Absolute' it picks this up OK. However, it won't respond to the onclick event either. I have heard that setAttribute is buggy with IE7, which is why I tried to specify each attribute directly. The style sheet for class button is: Code: .button
{
position: absolute;
left: 5;
top: 5;
z-index: 1;
}
(BTW, no link to a website as this is local on my machine atm) TIA, Gerald. I currently have a page which, when the user clicks a button creates a new row displaying a form. I also have other forms on this page however so I was wondering if anyone knew how to close a form using javascript? Thanks for any help. My code to create the table row and form are below... Code: myform = document.createElement("form");
myform.method = "post";
myform.action = "editdetails.php";
myform.id = "editemail";
myform.name = "editemail";
var a=document.getElementById('editdetailstable').insertRow(2);
var b=document.getElementById('editdetailstable').insertRow(3);
var x=a.insertCell(0);
x.innerHTML="New Email: ";
x.align = "right";
var y=a.insertCell(1);
y.innerHTML="<input type='text' name='email' id='email' />";
var z=b.insertCell(0);
z.innerHTML="<input type='button' value='Change' />"
z.colSpan = "2";
z.align = "center";
Hi there, so i am working on a website, and on it there is a video with youtube api. I need to hide all Table-rows that are not during each 5 second time frame. So for example, when it is at 0:36, it will hide all TR's besides the TR that has to do with the video between 0:35 and 0:40. Each TR displays a start time, content, and end time. Here is what the tables currently look like. Code: <table width="600" class="table" >
<tr class="item-titles">
<td width="75" class="none">Start</td>
<td width="400">Caption</td>
<td width="75">End</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(0, false)">0</a></td>
<td><a href="javascript:player.seekTo(0, false)"></a></td>
<td><a href="javascript:player.seekTo(5, false)">5</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(5, false)">5</a></td>
<td><a href="javascript:player.seekTo(5, false)"></a></td>
<td><a href="javascript:player.seekTo(10, false)">10</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(10, false)">10</a></td>
<td><a href="javascript:player.seekTo(10, false)"></a></td>
<td><a href="javascript:player.seekTo(15, false)">15</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(15, false)">15</a></td>
<td><a href="javascript:player.seekTo(15, false)"></a></td>
<td><a href="javascript:player.seekTo(20, false)">20</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(20, false)">20</a></td>
<td><a href="javascript:player.seekTo(20, false)"></a></td>
<td><a href="javascript:player.seekTo(25, false)">25</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(25, false)">25</a></td>
<td><a href="javascript:player.seekTo(25, false)"></a></td>
<td><a href="javascript:player.seekTo(30, false)">30</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(30, false)">30</a></td>
<td><a href="javascript:player.seekTo(30, false)"></a></td>
<td><a href="javascript:player.seekTo(35, false)">35</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(35, false)">35</a></td>
<td><a href="javascript:player.seekTo(35, false)"></a></td>
<td><a href="javascript:player.seekTo(40, false)">40</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(40, false)">40</a></td>
<td><a href="javascript:player.seekTo(40, false)"></a></td>
<td><a href="javascript:player.seekTo(45, false)">45</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(45, false)">45</a></td>
<td><a href="javascript:player.seekTo(45, false)"></a></td>
<td><a href="javascript:player.seekTo(50, false)">50</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(50, false)">50</a></td>
<td><a href="javascript:player.seekTo(50, false)"></a></td>
<td><a href="javascript:player.seekTo(55, false)">55</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(55, false)">55</a></td>
<td><a href="javascript:player.seekTo(55, false)"></a></td>
<td><a href="javascript:player.seekTo(60, false)">60</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(60, false)">60</a></td>
<td><a href="javascript:player.seekTo(60, false)"></a></td>
<td><a href="javascript:player.seekTo(65, false)">65</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(65, false)">65</a></td>
<td><a href="javascript:player.seekTo(65, false)"></a></td>
<td><a href="javascript:player.seekTo(70, false)">70</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(70, false)">70</a></td>
<td><a href="javascript:player.seekTo(70, false)"></a></td>
<td><a href="javascript:player.seekTo(75, false)">75</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(75, false)">75</a></td>
<td><a href="javascript:player.seekTo(75, false)"></a></td>
<td><a href="javascript:player.seekTo(80, false)">80</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(80, false)">80</a></td>
<td><a href="javascript:player.seekTo(80, false)"></a></td>
<td><a href="javascript:player.seekTo(85, false)">85</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(85, false)">85</a></td>
<td><a href="javascript:player.seekTo(85, false)"></a></td>
<td><a href="javascript:player.seekTo(90, false)">90</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(90, false)">90</a></td>
<td><a href="javascript:player.seekTo(90, false)"></a></td>
<td><a href="javascript:player.seekTo(95, false)">95</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(95, false)">95</a></td>
<td><a href="javascript:player.seekTo(95, false)"></a></td>
<td><a href="javascript:player.seekTo(100, false)">100</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(100, false)">100</a></td>
<td><a href="javascript:player.seekTo(100, false)"></a></td>
<td><a href="javascript:player.seekTo(105, false)">105</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(105, false)">105</a></td>
<td><a href="javascript:player.seekTo(105, false)"></a></td>
<td><a href="javascript:player.seekTo(110, false)">110</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(110, false)">110</a></td>
<td><a href="javascript:player.seekTo(110, false)"></a></td>
<td><a href="javascript:player.seekTo(115, false)">115</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(115, false)">115</a></td>
<td><a href="javascript:player.seekTo(115, false)"></a></td>
<td><a href="javascript:player.seekTo(120, false)">120</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(120, false)">120</a></td>
<td><a href="javascript:player.seekTo(120, false)"></a></td>
<td><a href="javascript:player.seekTo(125, false)">125</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(125, false)">125</a></td>
<td><a href="javascript:player.seekTo(125, false)"></a></td>
<td><a href="javascript:player.seekTo(130, false)">130</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(130, false)">130</a></td>
<td><a href="javascript:player.seekTo(130, false)"></a></td>
<td><a href="javascript:player.seekTo(135, false)">135</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(135, false)">135</a></td>
<td><a href="javascript:player.seekTo(135, false)"></a></td>
<td><a href="javascript:player.seekTo(140, false)">140</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(140, false)">140</a></td>
<td><a href="javascript:player.seekTo(140, false)"></a></td>
<td><a href="javascript:player.seekTo(145, false)">145</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(145, false)">145</a></td>
<td><a href="javascript:player.seekTo(145, false)"></a></td>
<td><a href="javascript:player.seekTo(150, false)">150</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(150, false)">150</a></td>
<td><a href="javascript:player.seekTo(150, false)"></a></td>
<td><a href="javascript:player.seekTo(155, false)">155</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(155, false)">155</a></td>
<td><a href="javascript:player.seekTo(155, false)"></a></td>
<td><a href="javascript:player.seekTo(160, false)">160</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(160, false)">160</a></td>
<td><a href="javascript:player.seekTo(160, false)"></a></td>
<td><a href="javascript:player.seekTo(165, false)">165</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(165, false)">165</a></td>
<td><a href="javascript:player.seekTo(165, false)"></a></td>
<td><a href="javascript:player.seekTo(170, false)">170</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(170, false)">170</a></td>
<td><a href="javascript:player.seekTo(170, false)"></a></td>
<td><a href="javascript:player.seekTo(175, false)">175</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(175, false)">175</a></td>
<td><a href="javascript:player.seekTo(175, false)"></a></td>
<td><a href="javascript:player.seekTo(180, false)">180</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(180, false)">180</a></td>
<td><a href="javascript:player.seekTo(180, false)"></a></td>
<td><a href="javascript:player.seekTo(185, false)">185</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(185, false)">185</a></td>
<td><a href="javascript:player.seekTo(185, false)"></a></td>
<td><a href="javascript:player.seekTo(190, false)">190</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(190, false)">190</a></td>
<td><a href="javascript:player.seekTo(190, false)"></a></td>
<td><a href="javascript:player.seekTo(195, false)">195</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(195, false)">195</a></td>
<td><a href="javascript:player.seekTo(195, false)"></a></td>
<td><a href="javascript:player.seekTo(200, false)">200</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(200, false)">200</a></td>
<td><a href="javascript:player.seekTo(200, false)"></a></td>
<td><a href="javascript:player.seekTo(205, false)">205</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(205, false)">205</a></td>
<td><a href="javascript:player.seekTo(205, false)"></a></td>
<td><a href="javascript:player.seekTo(210, false)">210</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(210, false)">210</a></td>
<td><a href="javascript:player.seekTo(210, false)"></a></td>
<td><a href="javascript:player.seekTo(215, false)">215</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(215, false)">215</a></td>
<td><a href="javascript:player.seekTo(215, false)"></a></td>
<td><a href="javascript:player.seekTo(220, false)">220</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(220, false)">220</a></td>
<td><a href="javascript:player.seekTo(220, false)"></a></td>
<td><a href="javascript:player.seekTo(225, false)">225</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(225, false)">225</a></td>
<td><a href="javascript:player.seekTo(225, false)"></a></td>
<td><a href="javascript:player.seekTo(230, false)">230</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(230, false)">230</a></td>
<td><a href="javascript:player.seekTo(230, false)"></a></td>
<td><a href="javascript:player.seekTo(235, false)">235</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(235, false)">235</a></td>
<td><a href="javascript:player.seekTo(235, false)"></a></td>
<td><a href="javascript:player.seekTo(240, false)">240</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(240, false)">240</a></td>
<td><a href="javascript:player.seekTo(240, false)"></a></td>
<td><a href="javascript:player.seekTo(245, false)">245</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(245, false)">245</a></td>
<td><a href="javascript:player.seekTo(245, false)"></a></td>
<td><a href="javascript:player.seekTo(250, false)">250</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(250, false)">250</a></td>
<td><a href="javascript:player.seekTo(250, false)"></a></td>
<td><a href="javascript:player.seekTo(255, false)">255</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(255, false)">255</a></td>
<td><a href="javascript:player.seekTo(255, false)"></a></td>
<td><a href="javascript:player.seekTo(260, false)">260</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(260, false)">260</a></td>
<td><a href="javascript:player.seekTo(260, false)"></a></td>
<td><a href="javascript:player.seekTo(265, false)">265</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(265, false)">265</a></td>
<td><a href="javascript:player.seekTo(265, false)"></a></td>
<td><a href="javascript:player.seekTo(270, false)">270</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(270, false)">270</a></td>
<td><a href="javascript:player.seekTo(270, false)"></a></td>
<td><a href="javascript:player.seekTo(275, false)">275</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(275, false)">275</a></td>
<td><a href="javascript:player.seekTo(275, false)"></a></td>
<td><a href="javascript:player.seekTo(280, false)">280</td>
</tr>
<tr>
<td class="none"><a href="javascript:player.seekTo(280, false)">280</a></td>
<td><a href="javascript:player.seekTo(280, false)"></a></td>
<td><a href="javascript:player.seekTo(285, false)">285</td>
</tr>
</table>
And you can see the page at http://134.117.226.43:8000/check_sub...ty/test101/91/ any help ? Hi, I have written a code below: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript">
function emailRowContent(isSelected, emailAddress, severity)
{
var emailRowObj = document.getElementById('emailRow');
emailRowObj.childNodes[1].childNodes[0].checked = isSelected;
emailRowObj.childNodes[3].childNodes[0].value = emailAddress;
emailRowObj.childNodes[5].childNodes[0].checked = severity;
}
function LoadUp()
{
var emailAddressListObj = document.getElementById('emailAddressList');
var arrayOfEmails = new Array(5);
for (i = 0; i < 5; i++)
{
arrayOfEmails[i] = new emailRowContent( "checked", "fjkum@unknown.com" + i, i );
//emailAddressListObj.appendChild( arrayOfEmails[i] ); /* Somehow this line breaks */
}
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body onload="javascript:LoadUp();">
<div id="emailRow" class="emailRowClass">
<div><input type="checkbox" class="checkbox1"></div>
<div><input type="text" class="textfield"></div>
<div><input type="checkbox" class="checkbox2"></div>
</div>
<div id="emailAddressList" class="emailAddressClass"></div>
</body>
</html>
Basically, what I want to do is to dynamically create 5 instances of "emailRow" onto the web page making use of Javascript DOM. But have no success in getting it to work. Can anyone shed some light? Mike Can someone see what is wrong with this code: Code: frm=document.createElement('form')
frm.action="/cgi-sys/formmail.pl"
frm.method="POST"
fld=document.createElement('textarea')
fld.appendChild(document.createTextNode(simpleCart.items))
frm.appendChild(fld)
It is supposed to dynamically create a textarea and fill it up with the return of simpleCart.items() Hello all, I am doing a website project and in that currently I am designing a product page. I have to design add values to text boxes and drag and drop the text boxes in the workspace and delete the text boxes the user does not want and have to draw a graphical line between the text boxes which are in order. I have designed and coded everything except the graphical line part. I am a learner in javascript and Can we draw a graphical line dynamically between the text boxes in the webpage? If we can draw, can anyone let me know the tutorial for that so that I can learn and start coding as I have to submit that project soon. Thank you. function($) { $.fn.superfish = function(op){ var sf = $.fn.superfish, c = sf.c, } So I see the '.superfish' method being added to the object '$.fn'. I find it interesting that the first order of business is to declare 'sf' and stuff in to it some value '$.fn.superfish' which I do not fully understand. Also the statement c=sf.c How can 'c' be set to equal 'sf.c' when no 'sf.c' has been declared yet? Thanks! Is it possible to create an array of objects? I require a two dimensional array of objects. Thanks! Hi, I am trying to detect a users browsers and output a different code based on browser. I found this code online that uses the object detection method and it works. When I document.write(BrowserDetect.browser) it outputs Chrome, (which is what I am using). The code can be found he http://www.quirksmode.org/js/detect.html So I can't understand why the following code does not work? It ouputs the "not" in the else statement. I believe that BrowserDetect is an object and the .browser at the end is a property of the object. Can one not make an object a variable? or make an object a string? oh and BTW there is a bunch of javascript that creates the browserdetect object that can be found on the site above, but I thought it would be too unwieldy to post here. Thanks. The following script outputs: Chrome Not Working <script type="text/javascript"> document.write(BrowserDetect.browser); var browser="BrowserDetect.browser"; if(browser=="Chrome") { document.write(" Working"); } else { document.write(" Not working"); } </script> Hi If i was using c# i would use a generic list and add all my people objects to the list collection but how do i do this in jquery/javascript eg //container object var allObj= { }; //people object var people= { name:"fred",: age:00; }; How do I add many people objects to allObj (the amount of people added in not always the same) eg the final result is something like this allObj -person1 -person2 -person3 -person4 thanks Hi there, I have a very strange issue using dynamic scripting and iframe. It looks like when when iframe is loaded (i.e. onload method is triggered) all js objects that were sent to iframe before disappear? To clarify... I set iframe.scr from java script that caused it to connect to the server. After connection is established I start sending JS code to it (including some JS objects). At some point connection to iframe is closed (and onload method is called). Later on I reconnect (i.e. set src property again), and try to issue method calls on the JS objects that were sent in earlier session. None of these methods get triggered. Did anyone experienced similar problems? Is there a workaround? (I.e. is there any way I can send register JS Objects globally when sent through iframe?). Thanks for all your help, Ed Greetings! This is actually a two part question from the html source I attached as a .txt document (too big for the post). 1) How can I get the name of an object. I took my failed attempt in the function named disableJobStream: Code: function disableJobStream(obj)
{
if((obj.value == "completed") && (getRadioCheckedValue("shift") == "2"))
{
if(obj.name == "artprogs")
{ document.shiftreport.artprogs.disabled = true; }
}
<select style="100px;" name="artprog_stat" OnChange="disableJobStream(this)"><option style='background-color:white;' value='none'selected='selected'>None</option>
<option style='background-color:red;' value='stopped'>Stopped</option>
<option style='background-color:yellow;' value='running'>Running</option>
<option style='background-color:green;' value='completed'>Completed</option>
</select>
2) Once I put my form through validation any of the fields that I disabled become enabled again. How would I go about keeping that from happening? Page is too large to post and too large to put up as an attachment! Thanks for your help! Hello there folks, First time poster, so please be gentle I am ok with using objects creating classes if someone else defines, but when it comes to defining my own, I hit a nasty brick wall... I am using an XML/XSLT wrapper called Sarissa to help with programming a utility to transform XML into HTML in different views. For this to happen, I have created a Loader class which loads in XML required. I am aware of prototyping for binding methods to objects (as opposed to replicating the same method every time an instance is created)... The aim being I want to create a progress bar for the essential files that need to be loaded in. Presently I have them load in Synchronous mode just to get the utility working, which I know is poor, so would like to address it. So can someone answer me this: I understand why this works: Code: var SWMU = new Object();
SWMU.stylesheets = new Object;
SWMU.joblot = null;
SWMU.cache = new Object;
SWMU.filtering = new Object;
SWMU.locns = null;
function Loader(sXml, sTitle) {
this.doc = Sarissa.getDomDocument();
this.doc.load(sXml);
this.doc.summary = sTitle;
this.doc.onreadystatechange = function() {if(this.readyState)
{alert(this.summary + " state change to..." + this.readyState);} else
{alert(this.summary + " state change to..." + this.doc.readyState);}
}
}
function async() {
SWMU.stylesheets[0] = new Loader("swmu_test/swmu_berthing.xsl", "Main SWMU Stylesheet");
SWMU.stylesheets[1] = new Loader("assets/xsl/controls.xsl", "Drop down boxes");
}
function _init() {
async();
}
as it recreates the "this.doc.onreadystatechange" anonymous function everytime an instance is created (which is yuck). However, when I do this (using prototype)... Code: var SWMU = new Object();
SWMU.stylesheets = new Array;
SWMU.joblot = null;
SWMU.cache = new Object;
SWMU.filtering = new Object;
// Now define the Loader object
// Create the loader method for dealing with items loaded
function Loader(sXml, sTitle) {
this.doc = Sarissa.getDomDocument();
this.doc.load(sXml);
this.doc.summary = sTitle;
}
function rHandler() {alert(this.summary + " State changed to... "+this.readyState);}
// Create the request handler
Loader.prototype.doc = {};
Loader.prototype.doc.onreadystatechange = rHandler;
function async() {
SWMU.stylesheets[0] = new Loader("swmu_test/swmu_berthing.xsl", "Main SWMU Stylesheet");
SWMU.stylesheets[1] = new Loader("assets/xsl/controls.xsl", "Drop down boxes");
}
function _init() {
async();
}
Nothing happens and no errors are thrown, though there should be an alert box everytime there is state change to the progress of a file loading. Can someone help me with this? Apologies if this is on the basic side, but it has been causing me a headache all week, and I can not find any answers on this. Shaun I am able to do the following; Code: alert(myObject.Income.EESA.Name); However I'm looking at Code: alert(myObject.Income[0].Name); Or even better, not the full name, just "EESA". I need to loop through as you can see at the end of this script what I'm working on. Code: <script type="text/javascript">
var EESARate = 289.3;
var DLARate = 111.20;
var CARate = 61.35;
var SkyCost = 54.75;
var PerfectHomeCost = 28.17;
var CreditExpertCost = 14.99;
var UnitedUtilitiesCost = 8.13;
var BTCost = 57.18;
var AdobeCCCost = 46.88;
var TVLicenceCost = 6.06;
var GasCost = 10.00;
var ElectricCost = 20.0;
var ServerPackageCost = 9.99;
var USDValue = 123; //Fetch the value
var myObject = {
"Income": {
"EESA": {
"Name": "Enhanced Employment and Support Allowance",
"Amount": {
"GBP": EESARate,
"USD": EESARate * USDValue
},
"Frequency": {
"When": "14",
"Next": "30/10/2014"
},
"Description": "",
},
"DLA": {
"Name": "Disibility Living Allowance",
"Amount": {
"GBP": DLARate,
"USD": DLARate * USDValue
},
"Frequency": {
"When": "7",
"Next": "Wednesday"
},
"Description": "",
},
"CA": {
"Name": "Carers Allowance",
"Amount": {
"GBP": CARate,
"USD": CARate * USDValue
},
"Frequency": {
"When": "7",
"Next": "Saturday"
},
"Description": "",
},
},
"Bills": {
"Sky": {
"Name": "Sky",
"Amount": {
"GBP": SkyCost,
"USD": SkyCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
"PerfectHome": {
"Name": "Sky",
"Amount": {
"GBP": PerfectHomeCost,
"USD": PerfectHomeCost * USDValue
},
"Frequency": {
"When": "7",
"Next": "Wednesday"
},
"Description": "",
},
"CreditExpert": {
"Name": "Experian Credit Expert",
"Amount": {
"GBP": CreditExpertCost,
"USD": CreditExpertCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
"UnitedUtilities": {
"Name": "United utilities",
"Amount": {
"GBP": UnitedUtilitiesCost,
"USD": UnitedUtilitiesCost * USDValue
},
"Frequency": {
"When": "7",
"Next": "Wednesday"
},
"Description": "",
},
"BT": {
"Name": "British Telecomunications",
"Amount": {
"GBP": BTCost,
"USD": BTCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
"AdobeCC": {
"Name": "Adobe Creative Cloud Suite",
"Amount": {
"GBP": AdobeCCCost,
"USD": AdobeCCCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
"TVLicence": {
"Name": "Television Licence",
"Amount": {
"GBP": TVLicenceCost,
"USD": TVLicenceCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
"Gas": {
"Name": "Eon Gas",
"Amount": {
"GBP": GasCost,
"USD": GasCost * USDValue
},
"Frequency": {
"When": "7",
"Next": "Wednesday"
},
"Description": "",
},
"Electric": {
"Name": "Eon Electric",
"Amount": {
"GBP": ElectricCost,
"USD": ElectricCost * USDValue
},
"Frequency": {
"When": "7",
"Next": "Wednesday"
},
"Description": "",
},
"ServerPackage": {
"Name": "1&1 Unlimited Plus (12 mo. term)",
"Amount": {
"GBP": ServerPackageCost,
"USD": ServerPackageCost * USDValue
},
"Frequency": {
"When": "30",
"Next": "XX/XX/XX"
},
"Description": "",
},
},
};
var IncomeTotal = 0;
for (var k in myObject.Income) {
if (myObject.Income.hasOwnProperty(k)) {
++IncomeTotal;
}
}
alert(myObject.Income.EESA.Name);
document.write('<table>')
for(i = 0; i < IncomeTotal; i++){
document.write('<tr>')
document.write('<td>row ' + (i+1) + ', column 0</td>')
document.write('</tr>')
}
document.write('</table>')
var TotalBills = 0;
for (var k in myObject.Bills) {
if (myObject.Bills.hasOwnProperty(k)) {
++TotalBills;
}
}
//alert(TotalBills);
</script>
Hi All I thought it was about time to actually learn Javascript rather than pretend I know it, so I'm new to Javascript. I've been reading Javascript 'The Good Parts' and have watched a few google videos on Youtube. So I came across prototyping which seems to be quite fundamental to JS but is quite awkward to use. I am trying to avoid the use of the 'new' keyword and limit my application to one Global variable, as this can improve the JS scripts performance, reliability and security. In essence I'm just trying to make a simple MsgBox object that has a method called 'alertMe', which in turn simply shows an alert box with 'Hello' If this is not very clear then say so as trying to explain something you don't fully understand is quite hard. Here's my code, doesn't alert when I called the object. Have a look Code: var MyLib = {};
MyLib.MsgBox = function(){
//Object methods
MyLib.MsgBox.prototype.alertMe = function(){
alert('Hello');
};
};
MyLib.MsgBox.alertMe();
Any help and pointers will be very appreciated. Regards, Magnetica Hello everybody am a JavaScript beginner. here is a code making rollovers //////////////////////////////////////////////// window.onload=rolloverInit; function rolloverInit() { for(var i=0; i<document.images.length; i++) { if(document.images.parentNode.tagName=="A") { setUpRollover(document.images); } } } function setUpRollover(currentImage) { currentImage.outImage = new Image(); currentImage.outImage.src = currentImage.src; currentImage.onmouseout = rollOut; currentImage.overImage = new Image(); var source = currentImage.src; var sourceText = source.toString(); if(sourceText.indexOf("png")>0) { currentImage.overImage.src ="images/"+currentImage.id+"_on.png"; } else { currentImage.overImage.src ="images/"+currentImage.id+"_on.gif"; } /*currentImage.overImage.src ="images/"+currentImage.id+"_on.gif";*/ /*currentImage.overImage.src ="images/"+currentImage.id+"_on.png";*/ currentImage.onmouseover = rollOver; currentImage.clickImage = new Image(); if(sourceText.indexOf("png")>0) { currentImage.clickImage.src ="images/"+currentImage.id+"_click.png"; } else { currentImage.clickImage.src ="images/"+currentImage.id+"_on.gif"; } /*currentImage.clickImage.src = "images/"+currentImage.id+"_on.gif";*/ /*currentImage.clickImage.src = "images/"+currentImage.id+"_on.png";*/ currentImage.onmousedown = rollClick; currentImage.parentNode.childImage = currentImage; currentImage.parentNode.onblur = rollOutParent; currentImage.parentNode.onfocus = rollOverParent; } function rollOut() { this.src = this.outImage.src; } function rollOver() { this.src = this.overImage.src; } function rollClick() { this.src = this.clickImage.src; } function rollOutParent() { this.childImage.src = this.childImage.outImage.src; } function rollOverParent() { this.childImage.src = this.childImage.overImage.src; } //////////////////////////////////////////////// 1-I do understand "if iam right, lol" that here ///currentImage.outImage = new Image();/// and here ///currentImage.overImage = new Image();/// and here ///currentImage.clickImage = new Image();/// we are creating an image object "overImage" on the fly which still a property of currentImage object, to keep track and store the current image and new image src. but here ///currentImage.parentNode.childImage = currentImage;/// I am unable to see the point behind creating the childImage object -same rule applied here??? is it really a brand new independent object "still a property of the parent" created on the fly like before? and if so -what is is purpose here?? how the cildImage object is interacting here, what is its purpose? and how it is able to modify "actually change" the <a> object child node Image object "currentImage". it seems stupid question but its quiet simple ---///currentImage.parentNode.childImage = currentImage;/// here I have an object on the fly, a new Image object "childImage", that is Fine until now. ---///this.childImage.src = this.childImage.outImage.src;/// now how the childImage became able to change my parent "<A>" child "currentImage" src ??? how it "childImage" became displayable at all is is because of the assignment here ///currentImage.parentNode.childImage = currentImage;/// ??? Yes i assigned currentImage to the childImage, but based on my java programing concepts background each still independent objects refrences representing two different objects ---->and so based on that here is these functions rollOutParent(), rollOverParent() am supposed to say something like ***this.currentImage.src = this.childImage.src*** or ***this.childImage.src = this.childImage.outImage.src;***or whatever "i know thats wrong coding here am just giving example". ------------ am confused, how with this simple line of code currentImage.parentNode.childImage = currentImage; childImage became able to define the currentImage ? and if so, how this was achieved, hoe the Objects is being represented and how they interact in the core memory? I'm having a spot of trouble in making my functions work and my book seems to be pure rubbish. I'm sure that the error is purely syntax, although it may be something more. Code: <script type="text/javascript" src="flowers.js"></script>
<script type="text/javascript">
function pageSetup() {
var today = new Date(); // this creates a date object with today's date
var banner = displayBanner(today); // *should* call the displayBanner function
var days = calcDaysToSale(today); // *should* call the function using today's date
document.sale.saleMessage.value = days; // *should* set the value to days.
// Obviously none of it works.
}
</script>
This is the code working with the script contained in the html file. I'll post the full page at the bottom. The following code is the JavaScript code. The first function isn't made to provide full functionality at the moment, I'm trying to get the rest of it working. Code: function displayBanner(currentDate) {
if (currentDate.getMonth() == 2)
imgSrc = "winterLogo";
return ("<img src='" + imgSrc + ".gif'>");
}
function calcDaysToSale(currentDate) {
var saleDay = new Date();
saleDay.setDate(15); // sets the sale date to the 15th of the current month
// Subtracts the days remaining until the sale.
// If the number is negative, the sale is over.
var Days = saleDay.getDate()-currentDate.getDate();
if (Days < 0) {
return "The sale has ended.";
}
else {
return Days;
}
}
I have tried to Google the problem and I have also tried to look it up in my book. I simply don't know the right terms to Google, and as I said the book is rubbish. I don't know why the Code: document.sale.saleMessage.value = days; doesn't work for this. Oh well, I'll learn quickly I suppose. Here is the full HTML code: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Carol's Flowers</title>
<link href="flowers.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="flowers.js"></script>
<script type="text/javascript">
function pageSetup() {
var today = new Date(); // this creates a date object with today's date
var banner = displayBanner(today); // *should* call the displayBanner function
var days = calcDaysToSale(today); // *should* call the function using today's date
document.sale.saleMessage.value = days; // *should* set the value to days.
// Obviously none of it works.
}
</script>
</head>
<body class="oneColLiqCtrHdr">
<div id="container">
<div id="header">
<p><img name="myBanner" src="banner" id="myBanner" alt="Carol's Flowers" />
<!-- end #header -->
</p>
<div id="links"><a href="#">Home</a> | <a href="#">General Arrangements</a> | <a href="#">Seasonal Designs</a> | <a href="#">Custom Orders</a> | <a href="#">Location</a></div>
</div>
<div id="mainContent">
<table id="mainTable">
<tr>
<td width="201"><h1><img src="Flowers.JPG" alt="Random Flowers" width="200" height="255" /></h1></td>
<td width="687">
<p>Here at Carol's Flowers, we believe that there is a perfect floral arrangment for every occasion! Take a look around and see if there is anything you like. If we don't already have it, then we will create it for you!</p></td>
</script>
</tr>
</table>
<!-- end #mainContent --></div>
<div id="footer">
<p> <form name="sale" id="sale">
Days Until Mid Month Madness Sale :
<input type="text" name="saleMessage" id="saleMessage" /></form></p>
<!-- end #footer --></div>
<!-- end #container --></div>
<!-- I am trying to run the script here -->
<script type="text/javascript">
pageSetup();
</script>
</body>
</html>
|
|||||||