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JavaScript - Nested Objects
I'm trying to reuse some code in a different context to do a different job.
The code to be reused contains hundreds of lines similar to a = new b.c.d(e,f) with different value for e and f. I need to create a new user defined object with the structure b.c.d. I've made numerous attempts along the lines of: Code: function d (e, f) {
this.e = e;
this.f = f;
}
function c () {
this.d = d (e, f);
}
function b () {
this.c = c;
}
var a = new b.c.d("test", "message");
with various permuations of functional declarations. However I get error message "Object expected" or "b.c.d is null or not an object" at the final line of the example. It works with the test line var a = new d("test", "message") but not when I start to build up the expression. How should I define of b.c.d? Similar TutorialsHi, I am having trouble with a recursive function I created to list out the indexes and values of various nested objects. Code: var macros={
CTRL: {
ALT: {
ENTER: "<br />",
P: "<p>.</p>",
A: "<a href=\"\">.</a>",
_1: "<h1>.</h1>",
_2: "<h2>.</h2>",
_3: "<h3>.</h3>",
_4: "<h4>.</h4>",
_5: "<h5>.</h5>",
_6: "<h6>.</h6>"
}
}
};
I want to print out the whole 'bread crumb trail' to each object, ie CTRL ALT 6: <h6>.</h6>, but at the moment my function prints out CTRL ALT twice for 'ENTER' and then never again. The function: Code: function printObj(obj) {
for(i in obj) {
var n=i.replace("_", "");
document.write(n);
if(typeof obj[i]=="string") {
document.write(":");
document.write(" "+obj[i].replace(/</g, "<").replace(/>/g, ">"));
}
else {
document.write(n);
}
if(typeof obj[i]=="object") printObj(obj[i]);
document.write("\n");
}
}
printObj(macros);
The current output: Code: CTRLCTRLALTALTENTER: <br /> P: <p>.</p> A: <a href="">.</a> 1: <h1>.</h1> 2: <h2>.</h2> 3: <h3>.</h3> 4: <h4>.</h4> 5: <h5>.</h5> 6: <h6>.</h6> Any advice would be appreciated. Cheers, Gus I posted this once, but it disappeared, and I have no notifications that I did anything wrong. I read the rules before posting and wasn't breaking any so I am not sure why it disappeared but here goes again. I am trying to learn Javascript (particularly OOP) from a series of screencasts by Douglas Crockford. I have developed a theoretical "game" to build to illustrate it to myself better, and learn by example. I must be misunderstanding how inheritance works, because my code is not producing the results I thought it would. Here is what I have, followed by an explanation of my understanding. Code: $(function() {
function object(o) {
function Funct() {}
Funct.prototype = o;
return new Funct();
}
soldier = {
pointsCost: 0,
movement: "1 Infantry Block",
validTargets: {},
weapons: {
"Main Weapon": {
"Weapon Type": "M4 Carbine",
"Fire Range": 12
},
"Secondary Weapon": {
"Weapon Type": "JCP .45",
"Fire Range": 3
}
}
};
var rifleman = object(soldier);
rifleman.pointsCost += 10;
rifleman.validTargets.target1 = "Infantry"
rifleman.weapons["Secondary Weapon"]["Weapon Type"] = "";
rifleman.weapons["Secondary Weapon"]["Fire Range"] = "";
var heavyGunner = object(soldier);
heavyGunner.pointsCost += 20;
heavyGunner.validTargets.target1 = "Infantry";
heavyGunner.validTargets.target2 = "Light Armor";
heavyGunner.weapons["Main Weapon"]["Weapon Type"] = "SAW M249";
heavyGunner.weapons["Main Weapon"]["Fire Range"] = 12;
heavyGunner.weapons["Secondary Weapon"]["Weapon Type"] = "";
heavyGunner.weapons["Secondary Weapon"]["Fire Range"] = "";
var sniper = object(soldier);
sniper.pointsCost += 30;
sniper.validTargets.target1 = "Infantry";
sniper.weapons["Main Weapon"]["Weapon Type"] = "Savage .308";
sniper.weapons["Main Weapon"]["Fire Range"] = 20;
sniper.weapons["Secondary Weapon"]["Weapon Type"] = "JCP .45";
sniper.weapons["Secondary Weapon"]["Fire Range"] = 3;
var demolitions = object(soldier);
demolitions.pointsCost += 30;
demolitions.validTargets.target1 = "Infantry";
demolitions.validTargets.target2 = "Light Armor";
demolitions.validTargets.target3 = "Artilery";
demolitions.validTargets.target4 = "Structures";
demolitions.weapons["Main Weapon"]["Weapon Type"] = "SMAW MK153";
demolitions.weapons["Main Weapon"]["Fire Range"] = 16;
demolitions.weapons["Secondary Weapon"]["Weapon Type"] = "M1014 Combat Shotgun";
demolitions.weapons["Secondary Weapon"]["Fire Range"] = 1;
var infantry = {
rifleman: rifleman,
heavyGunner: heavyGunner,
sniper: sniper,
demolitions: demolitions
};
console.log(infantry);
});
I start by creating an object function that accepts an object passed in, and sets it to the prototype of a constructor (that would allow me to create a new object linked to, and inheriting from, the initial passed in object) I initialized a solider object literal, and pass that into the object function while creating 4 new objects (rifleman, heavyGunner, sniper, demolitions) These four should inherit from and customize upon the soldier object. The way I understood inheritance is that the new objects (example. rifleman) would inherit properties from the old object (i.e. soldier) and change or add properties, affecting only the new (rifleman) object but not changing the old(solider) object. this works ok somewhat in my example, until it comes to nested objects. In the above example I have objects as values for some Object's properties. (i.e. validTargets and weapons) When I change or add these, all of the new objects seem to inherit the last declarations, from demolitions, as if demolitions is actually changing that part of the soldier object so that the other's inherit those properties. From my viewpoint, I expected these values to not be changed and that the 4 infantry types had no link to each other, but only to the soldier object. I apparently misunderstood something, or coded something wrong. Some minor notes: -I will be updating most of the "string" values to be objects, so for instance, the validTargets value of "Infantry" would actually be the infantry object, stating that any of the 4 solider types would be a valid target. - I intend to create weapons as their own viable objects in the future, and pass those objects instead of "strings" - I intend to extend this (once this is working) to create an armor object that contains armor type units, similar in structure to the infantry object. - If I can get this all to work, I may make this into a "simple" dice style battle game. but that is way off, I just want to get this nesting of objects to work with inheritance for now. Thanks in advance for any help you can provide. Here is a link to the "live" example. (not much different there except if you have firebug you can see the console.log method showing the objects, and how they are inheriting in properly from my POV.) Link to Live example... Blue This is a little hard to explain so I'm posting an example. Code: //NESTED FUNCTION I'M USING TO DEMONSTRATE MY QUESTION
function foo(a) {
this.x = 5;
//USED TO SET THE VALUE OF X
if( a == 0 )
return function(z) {
return x = z;
}
//USED TO RETRIEVE THE VALUE OF X
else if( a == 1 )
return function() {
return x;
}
}
//MAKES setX THE SETTER FUNCTION
var setX = foo(0);
//MAKES getX THE GETTER FUNCTION
var getX = foo(1);
print( "setX(25), not an instance: " + setX( 25 ) );
print( "getX(), not an instance: " + getX() );
print( "" );
//CREATES AN OBJECT INSTANCE USING FOO AS CONSTRUCTOR
var q = new foo();
print( "value of x in object instance: " + q.x );
print( "" );
print( "setX(25), not an instance: " + setX( 25 ) );
print( "getX(), not an instance: " + getX() );
This code will output: Code: setX(25), not an instance: 25 getX(), not an instance: 25 value of x in object instance: 5 setX(25), not an instance: 25 getX(), not an instance: 25 Observations: It seems like this.x actually has two meanings. 1)x becomes a member of the "Function" object foo(). 2)x becomes a part of the constructor for prototype class foo. But why then does x revert back to the original value of 5 when I use foo as a constructor? Does javascript automatically save the original value on creation for a reason? What is going on behind the scenes to make this happen? Is this behavior part of an ontological model that makes sense? Similarly, if I change "this.x" to "var x" I can access the value of x but I can't change it. Not that that I should be able to, the syntax "var x" doesn't make x a member of foo anyway. But I'm still having trouble classifying the relationship "var x" has to the function. Anyways this is more of a tangent. My main question is above but if anyone has something to say about this, I'd be interested to hear it. It seems like all these behaviors have rules to them, but there is no conceptual model to think through that guide these behaviors. Or maybe I'm just ignorant. Enlighten me. Hi, 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 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! Good day, I have the following code: Code: var img = new Image(); img.myProperty = 'something'; I've tried Image.prototype.myProperty and a few other things. It seems IE just doesn't want me extending the Image object. Is there a known work-around? Thanks Is it possible to create an array of objects? I require a two dimensional array of objects. 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 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> 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 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! 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? 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 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>
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>
I have a javascript assignment I am having difficulties with. I have most of it complete but need some assistant with the last portion and that is to get my display function to work. I am sure that this is something I should know how to do but for the life of me can't seem to figure out and just need a little guidance. Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Lab03</title>
<h1> Person Information </h1>
<script type= "text/javascript" charset= "utf-8">
function Person( ) {
this.lastname = ' ';
this.firstname= ' ';
this.areacode= ' ';
this.phone_number= ' ';
this.show_person = ' ';
}
</script>
<script type= "text/javascript" charset= "utf-8">
var per1 = new Person
function getInput( ) {
lastname= prompt("please enter your last name: ");
firstname= prompt("please enter your first name: ");
areacode= prompt("please enter your area code: ");
phone_number= prompt ("Please enter your phone number (ex:888-8888): ");
return per1;
}
per1= getInput( );
</script>
</head>
<body>
<script type ="text/javascript" charset= "utf-8">
function show_person( ){
if( firstname == "" && lastname == "" )
{
document.writeln( "Name: Unknown" + "<br/>" );
}
else if( firstname == 'null' && lastname == 'null' )
{
document.writeln( "Name: Unknown" + "<br/>" );
}
else if ( firstname == "" || lastname == "")
{
document.writeln("Name: " + lastname);
document.writeln(firstname + "<br/>");
}
else if ( firstname == 'null' || lastname == 'null')
{
document.writeln("Name: " + lastname);
document.writeln(firstname + "<br/>");
}
else
{
document.writeln("Name: " + lastname + ", ");
document.writeln(firstname + "<br/>");
}
else if ( areacode == "" || phone_number == "" )
{
document.writeln ("Phone: ");
}
else if ( areacode == 'null' || phone_number == 'null' )
{
document.writeln ("Phone: ");
}
else
{
document.writeln('Phone: (' + areacode + ')');
document.writeln(phone_number);
}
return this.show;
}
</script>
<noscript>
<p>You must enable javascript to view all the features of this page.</p>
</noscript>
</body>
</html>
Can someone help me out and tell me what it is I need to do to make it work? I actually had it working when I was able to put all the code in the get function but was told I needed a separate display function so any input is greatly appreciated. Hello ! I'm searching help regarding a script, function, or w/e that could enable me to move a DIV with acceleration & deceleration. Note: the DIV has a setTimeout on it to change sprites (I'm basically moving a little character) More details for what the script/function has to do - One function to start - It's accelerating from 1px/X to 5px/X (where X is in millisecond) in Y millisecond - One function to stop (which is obviously decelerating from 5px/X to a fixed position in Y millisecond (same as acceleration) Currently I have a stupid script whe First occurence of key pressing starts the move, and the continuous keypress occurence makes my object move 5px. I'm pretty sure it takes hugue amount of time for the browser to do it, so I'm trying to improve. My ideas: - Improve this method, obviously not a good solution in my opinion - Using a while loop that will trigger moving every Y millisecond (But that might kill the sprites's setTimeout) - Massive setTimeout every Y millisecond (Would that be good ?) - Using somehow a sleep() php-like function (It doesn't exist in JS ?) I hope I can improve my system quickly Thanks for helping, nico Hello, I have the following object: Code:
var layers = {
photo1 : {
index : 1,
xPos : 63,
yPos : 48,
angle : 0
},
background : {
index : 0,
xPos : 278,
yPos : 163,
angle : 0
}
}
How can I sort the objects by the index property? Code: for(var layer in layers.sort(???))
{
}
Thx Very Much! Hello! I have a pretty straight forward question dealing with JQuery/Javascript (I'm pretty new to both, so the syntax is still escaping me). I have a javascript file that holds an array of objects inside of it (addresses to be exact) and I then need to take that array and call it to print into the Title attribute of a <li> after the list has been populated. Below is the Javascript arrray: Code: var banner_data = [ "address1","address2","address3","address4"];
var obj = { one:"address1", two:"address2", three:"address3", four:"address4" }
And this is how it is being called in the HTML: Code: $('ul>li').each(function(){
var $this = $(this); // current list item
var idx = $this.index();
var thisAddress = banner_data[idx];
$this.attr('title', thisAddress.append[4])
});
any thoughts? I have jQuery 1.7.1 installed, a fully valid html/css and a proper doctype (just to cover our bases haha) |
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