|
JavaScript - Simple Object Function Problem
Hello was following a tutorial online from bucky. and created a new example with different variables and such. My code in my eyes looks absolutely fine but however it does not display can anyone spot the problem?
[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>Untitled Document</title> <script type="text/javascript"> function cigerettes (brand, tar, price) { this.brand=brand; this.tar=tar; this.price=price; this.ReducedCost = discount; } function discount() { var reduction = 20; var finalCost = this.price - reduction; return finalCost; } var packet1 = new cigerettes("Mayfair", "2.0 mg", 399); var packet2 = new cigerettes("Sovereign", "3.4 mg", 425); </script> </head> <body> <script type="text/javascript"> document.write(packet1.brand() + " they contain " + packet1.tar() + "of tar " + "the packet cost me " + packet1.price() + ". With discount I got them for: " + packet1.ReducedCost()); </script> </body> </html> [code] Similar TutorialsHello, I have a code: Code: var device = function(pos_X,pos_Y,serial){
this.pos_x = pos_X;
this.pos_y = pos_Y;
this.serial_number = serial;
this.click = function(){
$("#Control").html("Menu");
};
this.draw = function() {
$("#MainArena").append("<div style='position: absolute; top: "+this.pos_y+"px;
left: "+this.pos_x+"px;' onclick='"+alert('click')+";'>device</div>");
};
this.move = function(newX, newY) {
this.pos_x = newX;
this.pos_y = newY;
};
[...]
<body>
<div id="MainArena"></div><div id="Control"></div>
devices = new device(100,100,1);
devices.draw();
</body>
The main problem is in "onclick" in <div> element. This script generates: <div id="1" style="position: absolute; top: 100px; left:100px;" onclick="undefined;">device</div> Hello I would like to know how this is not functional. surely passing the function to another function would work so I can use the same variables without having to write it out again. [ICODE] <html> <head> <title>Number Conversions</title> <script> function addNumbers () { var firstnumber = document.calculator.myFirstNumber.value; var secondnumber = document.calculator.mySecondNumber.value; var total = parseInt(firstnumber) + parseInt(secondnumber); document.calculator.myTotal.value = total; document.calculator.myHex.value = total.toString(16); document.calculator.myOct.value = total.toString(8); document.calculator.myBinary.value = total.toString(2); document.write("End of Calculation."); } function subtractNumbers (addNumbers) { var total = parseInt(firstnumber) - parseInt(secondnumber); } </script> </head> <body> <form name="calculator"> First Number <input type=text name="myFirstNumber" value=0 size=3> <br> Second Number <input type=text name="mySecondNumber" value=0 size=3><br><br> <input type="button" value="ADD" onclick="addNumbers();"> <input type="button" value="SUBTRACT" onclick="subtractNumbers();"><br> Total <input type=text name="myTotal" value=0 size=3><br> Binary <input type=text name="myBinary" value=0 size=8><br> Octal <input type=text name="myOct" value=0 size=3><br> Hexidecimal <input type=text name="myHex" value=0 size=3><br> </form> </body> </html> [ICODE] So, basically what i'm doing here is hovering over the h2 heading and toggling the paragraph text. What i'm having a problem doing is changing the h3 headings so that they toggle the same way...is there a way to do this within this function without ids/classes? Code: <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#hdg').hover(function() {
$('div[title=latin]').toggle();
$('div[title=english]').toggle();
$('#').html('<h3>English</h3>');
});
});
</script>
Code: <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>New Page 2</title>
</head>
<SCRIPT LANGUAGE = JavaScript>
function estimateHolidays()
{
var service1;
var service2;
var service3;
var txtGrade;
var txtHolidays;
var dblEntitlement;
var strService;
strService = cmbService.value;
if (strService == "Service1")
{
dblEntitlement = 20;
}
else if (strService == "Service2" && Grade--"1")
{
dblEntitlement = 24;
}
else if (strService == "Service2" && Grade--"2")
{
dblEntitlement = 26;
}
else if (strService == "Service2" && Grade--"3")
{
dblEntitlement = 28;
}
else if (strService == "Service3")
{
dblEntitlement = 30;
}
else
{
dblEntitlement = "Error! Please try again.";
}
txtHoliday.value = dblEntitlement;
}
</SCRIPT>
<body>
<p>
<input name="txtGrade" size="25" value="Enter Your Staff Grade">
</p>
<p>
Years of Service: <select name="cmbService" size="1">
<option value="Service1">Less than 5 years service</option>
<option value="Service2">5 to 9 years service</option>
<option value="Service3">10 or more years of service</option>
</select>
</p>
<p>
<input type="button" value="Estimate Holidays" name="cmdEstimateHolidays" onclick="estimateHolidays()">
</p>
<p>
Holiday Entitlement: <input name="txtHolidays" size="25">
</p>
</body>
</html>
Why won't this code work!? Its driving me mad. Hi All, I'm trying to convert an anonymous function to a real function (nesting is getting out of hand), however the msg object becomes undefined after conversion. Here is the converted anonymous function which fails: https://gist.github.com/2587613 and here is the original anonymous function which works: https://gist.github.com/2587667 Any help would be greatly appriciated Hi all. I'm learning JS from pretty much scratch and the first thing I'm trying to do is simply make an image fade function. I just can't seem to make it work though, the image starts off at the right opacity (im this case 0.5) but after that the page goes white and the script never stops. It does seem to be counting up normally "opacity: 0.6 opacity: 0.7" etc. though. Code: <img src="1.jpg" id="pic1">
<script type="text/javascript">
var amount = 0.5;
var target = document.getElementById('pic1');
function fade() {
if (target.style.opacity < 1.0) {
target.style.opacity = amount;
amount = amount + 0.1;
document.write("<br>opacity: " + target.style.opacity);
setTimeout("fade()", 1000)
//fade();
}
}
fade();
</script>
edit I rewrote it to make it simpler but still having basically the same problem D:! EDIT***** I'm nearly done with my script. I just lack one thing! I have 4 prompts asking a user for information. Basically all I want to do is.. If lastname, and first name are BOTH entered, seperate them with a comment like so : lastname,firstname but leave the comma out, if only one of the names are entered. How could I do this? <script type="text/javascript"> last=name=area=num=''; function info ( ) { last = prompt("Please enter your last name",''); name = prompt("Please enter your first name",''); area = prompt("Please enter your area code",''); num = prompt("Please enter your phone number",''); }; function Person (info) { this.name = name this.last = last this.area = area this.num = num } </script> <title></title> </head> <body> <script type="text/javascript"> info ( ); teacher = new Person(); tempString=''; document.writeln ( last ); document.writeln ( name) ; if(area==''||num==''){tempString='';} else{tempString = teacher.area +''+ teacher.num} document.writeln ( tempString); </script> Hi I need help with a function inside an object that is inserted into a function argument which is then used in a string that is returned. For a quick example which may help you understand. Code: function fn(o) {
var text = '<a onclick="function(){'+o.func+'};">Click me!</a>';
document.write(text);
}
fn({
func: function() {alert('clicked');}
});
The above code should display a link on the page saying 'Click me!' and once you click it, an alert box should pop up but it doesn't seem to be working, can anyone help please, thank you. I am tasked with making a function that can accept many different items and return whether or not they exist. Currently I am struggling on seeing if an object that holds all the methods for a button exists. I thought I could pass in the string name of the object then do a $('buttonObject').length >0 in the 'Exists' method to see if it was created yet. However this will never return true, and I cannot pass in the object into my exists function without it being created yet (throws error). So something like Exists(buttonObject) won't work, I'll have to pass in the string name of it (Exists('buttonObject')) or something else (I'm new to JS). So how do I go about testing whether or not it exists if I cannot pass in buttonObject, without quotes? Hello, I am attempting to implement a javascript joystick plugin. The project has a google code page located at: http://code.google.com/p/javascript-joystick/ After installing the plugin, the javascript works flawlessly in IE and FF, however chrome has some issues with executing it. A hosted version of what I am having trouble with can be found at http://www.jimmyblaze.net/joytest/simple.html The issue seems to be with a snippet of code from the main script that attempts to create an object and embed it on the page. The trouble area can be found he Code: try {
ctrlFF.type = "application/x-vnd.numfum-joystick";
ctrlFF.width = 0;
ctrlFF.height = 0;
/*
* Before accessing the plug-in's script interface it needs to be
* added to the page. If the 'setDevice' call fails, the plug-in
* is assumed to either not be installed or not working in this
* browser, in which case it is removed in the catch.
*/
document.body.appendChild(ctrlFF, document.body);
if (ctrlFF.setDevice(0) != null) {
/*
* As with the code for IE, any non-null value is a
* success.
*/
return ctrlFF;
}
Chrome doesn't seem to support the .setDevice function, as when running the chrome developer tools inspect element tool, I can see it throw an exception at that line, and prompts the user to update java, because it thinks it is out of date. Has anyone run into this issue with chrome and know of a possible fix? Thanks a lot for your time, Legomaniac How would I add up a array of numbers in a function? My numbers keep getting written as strings, instead of adding onto each other. I am a beginner. function (myNumbers) { var number = [6,9,10,13,14]; var total = 0; for(var total=0; total < number.length; total = total + 1) { total = total + number; document.write(total); } } myNumbers(); This is just an excercise. Hi there, I've been scouring the web and my mind for the last 24 hours trying to find a script that will work for what I need. It seems like it would be something super simple. I need visitors to my site to be able to search if we offer service in their area. i.e. Enter Zip Code: [Search Field] (Submit Button) Pop-up results or a results page with one of two responses. Yes, we offer service. No, we do not cover your area. Something similar to what this company has on their site, http://www.oilpatchfuel.com/Pages/Welcome.aspx Any help is a greatly GREATLY appreciated!! I made a 50th anniversary guestbook to add memories/etc about our organization. The people can look at the entries and then if they want to add one of there own, there's a link that should pop up a form in a new for them to add it. I have no idea why this pop is not working in Internet Explorer (both IE6 and 7). It works beautifully in Firefox. I have no idea how you can go wrong with window.open. I'm stuck. Again, only the actual pop up function doesn't work. Everything else seems to be working fine. I included all of my code though even for the tab navigation because the link to the pop up form changes based on what tab they are in (i.e. if they're looking at the past memories tab and click on the link, it takes them to the past memories form). I know it's probably TMI on the code, but I thought it might be somehow related and better safe than sorry, right? HTML Page Code: <html>
<head>
<title>50th Anniversary Reflections</title>
<script type="text/javascript" src="js/guestbook.js"></script>
<link href="css/guestbook.css" media="all" type="text/css" rel="stylesheet">
</head>
<body>
<div id="guestbook_container">
<div id="tab_nav_container">
<ul>
<li><div id="tab_1" class="tabs_on" onclick="tabsClass.switchTab(this);"><a target="gstbk_frame" href="guestbook_query.asp?cat=1" onclick="change_value(1);">Past Memories</a></div></li>
<li><div id="tab_2" class="tabs_off" onclick="tabsClass.switchTab(this);"><a target="gstbk_frame" href="guestbook_query.asp?cat=2" onclick="change_value(2);">Career Impact</a></div></li>
<li><div id="tab_3" class="tabs_off" onclick="tabsClass.switchTab(this);"><a target="gstbk_frame" href="guestbook_query.asp?cat=3" onclick="change_value(3);">Future Wishes</a></div></li>
<li><div id="new" class="tabs_off" onclick="popupform();">Share Your Memories</div></li>
</ul>
</div><!-- end tab_nav_container -->
<div id="tab_content_container">
<div id="tab_1_data" class="tab_content"><p class="tab_category">What is your most important memory of NACUA?</p></div>
<div id="tab_2_data" class="tab_content" style="display: none;"><p class="tab_category">How has NACUA benefitted you and your career?</p></div>
<div id="tab_3_data" class="tab_content" style="display: none;"><p class="tab_category">What is your most important wish or hope for NACUA's future?</p></div>
</div><!-- end tab_content_container -->
<script type="text/javascript">
tabsClass.addTabs("tab_nav_container");
</script>
<br class="clear" />
<div id="iframe_container">
<iframe name="gstbk_frame" id="gstbk_frame" src="guestbook_query.asp?cat=1" width="730px" height="550px" scrolling="auto" frameborder="none"></iframe>
</div><!-- end iframe_container -->
<br class="clear" />
</div><!-- end guestbook_container -->
</body>
</html>
Here's the guestbook.js file: Code: //***** ASSIGN/CHANGE CATEGORY VALUES *****
function popupform(){
var href;
href="guestbook_submission_form.asp?cat="+catValue;
window.open(href, "Submission Form", 'width=600, height=400, scrollbars=no');
}
var catValue = "1"
function change_value(catChange){
catValue=catChange;
change_text();
}
function change_text(){
if(catValue=="1"){
document.getElementById("new").innerHTML = "<a href='#' style='color:#ffffff;'>Share Your Memories!</a>";
}
if(catValue=="2"){
document.getElementById("new").innerHTML = "<a href='#' style='color:#ffffff;'>Share Your Career Experiences!</a>";
}
if(catValue=="3"){
document.getElementById("new").innerHTML = "<a href='#' style='color:#ffffff;'>Add Your Own Wish!</a>";
}
}
//***** ASSIGN/CHANGE VALUES AND TABS *****
function assignCategory(cat){
document.form.category.value=cat;
}
function onLoadAssignAndSwitch(cat){
assignCategory(cat);
tabsClass.addTabs("tab_nav_container");
var initialTab = "tab_" + cat + "_data"
if (initialTab != "tab_1_data"){
document.getElementById(initialTab).style.display = "";
document.getElementById("tab_1_data").style.display = "none";
}
document.getElementById("tab_" + cat).className = "tabs_on";
}
function assignAndSwitch(element, cat){
tabsClass.switchTab(element);
assignCategory(cat);
}
//***** TABBED MENU *****
var tabsClass = {
tabSetArray: new Array(),
classOn: "tabs_on",
classOff: "tabs_off",
addTabs: function (tabsContainer) {
tabs = document.getElementById(tabsContainer).getElementsByTagName("div");
for (x in tabs) {
if (typeof(tabs[x].id) != "undefined") {
this.tabSetArray.push(tabs[x].id);
} else {}
}
},
switchTab: function (element) {
for (x in this.tabSetArray) {
tabItem = this.tabSetArray[x];
dataElement = document.getElementById(tabItem + "_data");
if (dataElement) {
if (dataElement.style.display != "none") {
dataElement.style.display = "none";
} else {}
} else {}
tabElement = document.getElementById(tabItem);
if (tabElement) {
if (tabElement.className != this.classOff) {
tabElement.className = this.classOff;
} else {}
} else {}
}
document.getElementById(element.id + "_data").style.display = "";
element.className = this.classOn;
}
};
I'm not that advanced in javascript (although not a total idiot) Any help and/or suggestions would be greatly appreciated! Thank you! Code: function splook(val){
return speciesDB.queryBy(function(row){
return row.data.species_id == val;
}).itemAt(0).data.speciesDB;
}
and the speciesDB Code: {success:true,rows:[{"species_id":"1","species_idx":"1","species":"Boa Constrictor"},{"species_id":"2","species_idx":"2","species":"Ball Python"},{"species_id":"3","species_idx":"3","species":"Reticulated Python"},{"species_id":"4","species_idx":"4","species":"SriLanka Python"},{"species_id":"5","species_idx":"5","species":"Blood Python"},{"species_id":"6","species_idx":"6","species":"Burmese Python"}]}
I need to take val and match it with the data and return species. I just can't figure it out though! Thanks! Goodafternoon! What im trying to do is get the users location (from the iPhone) which I have working and store it in a MySQL database (semi works). My problem is that to get the location, you need to use javascript. So I thought of using Ajax to post that back to the server. I have very little knowledge in Javascript, and Ajax, so this has been a bit of a struggle. Iv tried to learn how to do it with a tutorial: http://www.tizag.com/ajaxTutorial/ajax-javascript.php And this is what I got: PHP Code: <?php function is_iPhone($agent='') { if(empty($agent)) $agent = $_SERVER['HTTP_USER_AGENT']; if(!empty($agent) and preg_match("~Mozilla/[^ ]+ \((iPhone|iPod); U; CPU [^;]+ Mac OS X; [^)]+\) AppleWebKit/[^ ]+ \(KHTML, like Gecko\) Version/[^ ]+ Mobile/[^ ]+ Safari/[^ ]+~",$agent,$match)) { return "YES"; } elseif(stristr($agent,'iphone') or stristr($agent,'ipod')){ return "MAYBE"; } else { return "NO"; } } echo is_iPhone(); ?> <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>iPhone 3.0 geolocation demo</title> <meta content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" name="viewport"/> </head> <body> <script language="javascript" type="text/javascript"> <!-- //Browser Support Code function ajaxFunction(){ var ajaxRequest; // The variable that makes Ajax possible! try{ // Opera 8.0+, Firefox, Safari ajaxRequest = new XMLHttpRequest(); } catch (e){ // Internet Explorer Browsers try{ ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try{ ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){ // Something went wrong alert("Your browser broke!"); return false; } } } // Create a function that will receive data sent from the server ajaxRequest.onreadystatechange = function(){ if(ajaxRequest.readyState == 4){ document.myForm.time.value = ajaxRequest.responseText; } } ajaxRequest.open("GET", "UpdateLog.php?lat=" + Lat + "&long=" + Long + "&acc=" + Acc, true); ajaxRequest.send(null); } //--> var Lat = "" var Long = "" var Acc = "" function handler(location) { var message = document.getElementById("message"); message.innerHTML ='<img src="http://maps.google.com/maps/api/staticmap?center=' + location.coords.latitude + ',' + location.coords.longitude + '&zoom=12&size=400x400&markers=color:blue|label:S|'+ location.coords.latitude +','+ location.coords.longitude +'&sensor=true" alt="some_text"/>'; message.innerHTML+="<p>Longitude: " + location.coords.longitude + "</p>"; message.innerHTML+="<p>Latitude: " + location.coords.latitude + "</p>"; message.innerHTML+="<p>Accuracy: " + location.coords.accuracy + "</p>"; Lat = location.coords.latitude Long = location.coords.longitude Acc = location.coords.accuracy } navigator.geolocation.getCurrentPosition(handler); ajaxFunction(); </script> <div id="message">Location unknown</div> <a href="#" onclick="ajaxFunction();" >Send</a> </body> </html> Now this works if the user clicks on "Send" that I made, but I want it to do it without the user having to click send. If anyone could help me with this, or point me in a different direction that would be better then your help would be greatly appreciated. Thanks in advance for your help. EDIT: The PHP side of this works, that is something I know about lol. <p> <script type="text/javascript">// <![CDATA[ var metrics = { "mm" : 1, "cm" : 10, "m" : 1000, "inch" : 25.4, "foot" : 304.8 }; function convert(num, dec){ var val = document.getElementById("fromVal").value; if(isNaN(val)){ return } function roundNumber(num, dec) { var result = Math.round( Math.round( num * Math.pow( 10, dec + 1 ) ) / Math.pow( 10, 1 ) ) / Math.pow(10,dec); return result; } document.getElementById("toVal").value = val * metrics[document.getElementById("fromSystem").value]/ metrics[document.getElementById("toSystem").value]; } var interval = null; function watchChanges(){ interval == null ? setInterval("convert()", 500) : clearInterval(interval); } // ]]></script> </p> <table> <tbody> <tr> <td><input id="fromVal" style="width: 100px;" onfocus="watchChanges()" onblur="watchChanges()" type="text" /><select id="fromSystem" onchange="convert()"> <option value="mm">millimeters</option> <option selected="selected" value="cm">centimeters</option> <option value="m">meters</option> <option value="foot">feet</option> <option value="inch">inches</option> </select></td> </tr> <tr> <td colspan="1" align="center">=</td> </tr> <tr> <td><input id="toVal" style="width: 100px;" type="text" disabled="disabled" /><select id="toSystem" onchange="convert()"> <option value="mm">millimeters</option> <option value="cm">centimeters</option> <option value="m">meters</option> <option selected="selected" value="foot">feet</option> <option value="inch">inches</option> </select></td> Hey, I want javascript to print the name of an object down Code: <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script>
function getobjectname(obj){
var linkname = obj.getName();
document.writeln(linkname);
}
</script>
</head>
<body>
<a name="hello world" onclick="getobjectname(this)" style="cursor:pointer">click me</a>
</body>
</html>
This is not working, can anybody help me? ---------- Sorry for my bad English, I'm Dutch Hi, I rarely use javascript so pardon my newbieness. I'm trying to create a function that is triggered by a <select> onchange event. It's supposed to save the newly selected value in a variable, then refer the user to a link location + variable. This is what I tried: Code: <script type="text/javascript">
function categoryRef()
{
var a = this.options[this.selectedIndex].value;
document.location = 'recommend.php?cat=' + a;
}
</script>
<select name="category" onChange="categoryRef()">
<?php
$getCategoryQuery = "SELECT category FROM categories ORDER BY category";
$ConnectQuery = $database->query($getCategoryQuery);
while($category = mysql_fetch_array($ConnectQuery)){
if($getCategory == $category['category']){
echo "<option selected='selected'>" . $category['category'] . "</option>";
}
else{
echo "<option>" . $category['category'] . "</option>";
}
}
?>
</select>
When I try this and change option nothing happens. Any pointers? I have the following code: [CODE] rtn += "<div class='crowelem' style='width:100px;'>"+panel.genSendButton(current.readNode())+"</div>"; [CODE] This is in a loop that generates rows in a DIV. current.readNode() is returning an object from a linked list, the method genSendButton looks like this: [CODE] MatchRequest.prototype.genSendButton = function (obj) { var rtnstr = null; if(obj.msNotified == 0) { rtnstr = "<input type='button' value = 'Notify' onClick=\"javascriptanel.sendNotification("+obj+")\"/>"; } else { rtnstr = "<input type='button' value='Already Notified' disabled='true' onClick=\"javascriptanel.sendNotification('"+obj.msID+"')\"/>"; } return(rtnstr) ; } [CODE] If you step into this code in a debugger, obj is correctly passed into genSendButton as an object of the appropriate class. The code in the if(obj.msNotified == 0) clause generates an error. The var obj resolves to NPanlel: (this happens to be the class of the object). Regardless of how I try to pass obj into the method sendNotification it doesn't resolve to an object. Can anyone shed any light on where my omission of intelligence is occurring? Any help would be greatly appreciated. Mrbub |
|||||||