I have an object: Myobject and properties for the object: Myobject.color, Myobject.width, Myobject.height The scripts returns TRUE if I query Myobject.color or Myobject.width etc. I want to loop through de properties like so:
Code:
var properties = ['color', 'width', 'height']
for (var i=0; i<properties.length; i++) {
Myobject.properties[i]; // Returns UNDEFINED
}
How to make it works? (Should returns TRUE)
function show() {
var s = '' ;
for (var i = 0; i<arguments.length; s += '
'+arguments[i++]) ;
typeof(window) != 'undefined' ? window.alert(s) : WScript.Echo(s) ;
}
function f(){}
show('delete(f):',delete(f)) ; // false
g = function(){} ;
h = new g() ;
show('h:',h) ; // [object Object]
show('delete(g):',delete(g)) ; // true
show('h.constructor:',h.constructor) ; // function(){}
show('delete(h.constructor):',delete(h.constructor )) ; // true
show('h.constructor:',h.constructor) ; // function(){}
Either I'm having a really dim Friday, or something strange is going on. I'm trying to add a method to the Validator plugin, using the following regex:
[Code]....
I'm brand new to jquery, and am trying to set up a dynamic navigation dropdown which is populated with XML by our system (which I can't change.) For some reason, IE6 is showing space where the unused <li></li> tags are. I am trying to create a jquery code which will detect whether or not a link is present in the <li> so I can turn the display off or on dynamically. The relevant jquery code is here:[code]It should eventually appear like this, the way it does in Firefox due to CSS styling:[code]Which means that somehow, it is reading the <a> even when there isn't one.
View 4 Replies View RelatedThis is driving me freaking crazy. I have a RegExp, and a String. When I alert RegExp.test(String), I get "true." Sweet. Then I run String.replace(RegExp, ""), in an attempt to get rid of whatever was matched. But that does not change the string at all.
Am I misunderstanding replace, or what?
I have a regex here:
Code:
var NameValidator = {
first_middle_last_with_first_middle : function(txt){
[code]....
New to javascript and I have the following code in onSubmit() validation:
else if (cofaCOURRIEL == null || cofaCOURRIEL == "") {
alert('Le champ COURRIEL doit être rempli.');
document.forms["COFA_AIG"] ["COURRIEL"].focus();
return false;
}
else if (cofaCOURRIEL) {
if ( (atPOS < 1) || (dotPOS < atPOS + 2) || ((dotpos + 2) >= cofaCOURRIEL.length) ) {
alert('Adresse de courriel invalide.');
document.forms["COFA_AIG"] ["COURRIEL"].focus();
return false;
}}
else if (cofaDATE == null || cofaDATE == "") {
alert('Le champ DATE doit être rempli.');
document.forms["COFA_AIG"] ["DATE"].focus();
return false;
}
I understand it is not the best way to validate client side, but I will be doing php server side validation as well. My problem is that once the variable "cofaCOURRIEL" is valid, the script stops and returns true....not sure why...I'm guessing I'm missing an "else" statement after the embedded "if" statement, but I'm only guessing and if I'm correct, I wouldn't know what to put in the else statement to let it not break out of the validation. Any input?
how to add extra properties to html elements as I was storing data in html attributes. After looking at some others code including Raphael and this addEvent code. [URL] They seem to treat objects just like an array. obj[property] = value; This would have been extremely helpful to know previously as I have needed to be able to include variables in property names - but have resorted to making the whole thing a string and calling exec() on it.
View 2 Replies View RelatedI am currently using the simplemodal confirm dialog from Eric Martin. What do I need to modify to have the confirm dialog return true if the user clicks Yes, and false otherwise. for example something like this:
View 1 Replies View RelatedI created a method for displaying an object's properties:
As long as renderfunction = false, the object is fine coming out of this function.
However, if I change renderfunction to true, all my properties become undefined. Why isn't this working as I expect it to?
I have a list of input1's and inputs2's. The input ones are an accept button and the input2's are a deny button. However, I set up an alert to tell me the name of the input 1's but I am only told the name of the last input1 in my list.
I would like input1.name to show me... something like accept[3]. Where 3 is the uid of the user being accepted or denied. The name works when I look at the source code, but fails when I try to create the alert.
How can I achieve this result?
Code:
So what to do here, thats the question:
- You want to get the data of the button that has been pressed, if such function exists.
- Then use AJAX to send the form data to some file that probably doesnt exist yet.
- Give the PHP a responce, and echot he response to replace the buttons.
If "this" inside of a sortable "receive" function refers to the receiving object, How do I access the object to which the receive function belongs?
Example:
// Function that takes a JQ object and makes it sortable.
// We assign the "SortableRecieve" method to the receive event
MyObject.prototype.MakeSortable = function(JQOBJ){
JQOBJ.sortable({
receive: this.SortableRecieve
});}
MyObject.prototype.DoSomething = function(){
// Does something important
}
// The actual function that gets called when the receive event occurs
MyObject.prototype.SortableRecieve = function(event, ui){
// This function call won't work, because "this"
// doesn't point to the right thing!
this.DoSomething();
}
So how can I access the "True" this that refers to the object?
I am using this Browser Plugin call: world = new MTSPlugin( '../obj/main.mtx', '100%', '100%', '', 'simple', ''); in the middle of my page, where I want to load this object. (It is a 3d rendering modul Viewpoint Player)
Now I want to add a browser check, as this plugin runs only in IE. When I dedect that the page is loaded with IE, I am writing via Jquery a class name into my body tag.
I thought, it would work if I do the following:
if($('body').attr('class').length > 1){
world = new MTSPlugin( '../obj/main.mtx', '100%', '100%', '', 'simple', '');
}
But for some reason, the if fails, as it seem that the plugin is called earlier than the jquery browser check, so the class name is not set at this point.
Then I thought, making a function arround and call it onLoad within the body tag.
Which has the disatvantage that the MTS Plugin is loading at the worng place on the page.
What I want, is that the call to the object "world = new MTSPlugin( '../obj/main.mtx', '100%', '100%', '', 'simple', '');"
is only at a trie condition at the place where it should be...
I'm trying to get the properties for the following objects:
0: [object Object]
1: [object Object]
2: [object Object]
3: [object Object]
This was generated by using the following code:
[Code]...
Since object names can't simply be a number ie(this.oProducts.Product.0), how can I access the object properties in the list above?
I have the following question.
In my code, Ifirstdeclare a GLOBAL property to store all my global var's in, (with already some properties)[code]...
Does the second block of code overrides the first GLOBAL object? Is there a way to push more properties to an existing object using the same pattern?
I'm doing something with grails + jquery. My controller send a rendered json (which I know is sending correctly) but when the object "arrives" in the callback method it comes undefined. I can see it lenght, but not it's content.
[Code]...
I have to use scrollTop and scrollHeight properties, but on jQuery object it returns `undefined`.
Is there any method to get this property from jq object?
It doesn't matter, but my object looks like this:
i'd like to know objects properties and/or methods.
saying i do have an object "o" being part of the dom (a div or an ul...)
how could i list (introspection) all the properties and methods attached
to this object ?
i know it is possible in javascript but don't remeber how to ...
Do many programmers remember most of the object properties and methods or do they use IDE or references to find those specific objects. I'm starting to learn Javascript and seeing all the different type of objects available can be depressing. :(
View 2 Replies View RelatedI am fairly familiar with the concept of Objects and their properties and methods, but javascript being object based as opposed to object oriented has me stumped on how to access an object's properties from an onclick event handler created for another object created within the original object.
In the example below, I have a constructor function called anyObj. to which I pass an object reference to an element.
anyObj has 3 properties and one function increaseWidth()
increaseWidth() creates a new button with an onclick event handler and this is where I have a problem.
The onclick function needs to increase the value of anyObj's this.width property. I originally had a line this.width += 10; in the onclick but quickly realised why this wasn't working because the this in the onclick function refers to the new button object and not the this.width property of anyObj.
The workaround I have used, and it works, is to make a copy of all the this.xxxxx properties. eg. width = this.width; and use the width variable in the onclick as you can see below. This "workaround" works fine but doesn't feel ideal to me.
So is there a better way to access the anyObj()'s properties from within the onclick function than the way I have done it? Obviously I would prefer to not have to make copies of all the anyObj() properties like I have to make them accessible to the onclick function.
function anyObj(divObj){
this.elem = divObj;
this.width = 50;
this.height = 50;
[Code]....
Say x in a XML Http Request Object ... meaning it's either XMLHttpRequest (firefox) or ActiveXObject (IE)
This line of code works in firefox...
x.someProp = "someValue";
alert(x.someProp);
But in IE I get "Object doesn't support this property or method" I need to place a custom property on the object. Is there any way I can do that in IE?
I've already tried ActiveXObject.prototype.someProp = "";
I've created an object and within this object, I've added an eventlistener. But the problem now is that after addEventListener is being called to access a callback function, the callback function is not able to access the properties within its own class. Code:
View 14 Replies View RelatedI am fairly familiar with the concept of Objects and their properties and methods, but javascript being object based as opposed to object oriented has me stumped on how to access an object's properties from an onclick event handler created for another object created within the original object.In the example below, I have a constructor function called anyObj. to which I pass an object reference to an element.
anyObj has 3 properties and one function increaseWidth()
increaseWidth() creates a new button with an onclick event handler and this is where I have a problem.The onclick function needs to increase the value of anyObj's this.width property. I originally had a line this.width += 10; in the onclick but quickly realised why this wasn't working because the this in the onclick function refers to the new button object and not the this.width property of anyObj.
The workaround I have used, and it works, is to make a copy of all the this.xxxxx properties. eg. width = this.width; and use the width variable in the onclick as you can see below. This "workaround" works fine but doesn't feel ideal to me.So, what I am asking advice on is, is there a better way to access the anyObj()'s properties from within the onclick function than the way I have done it? Obviously I would prefer to not have to make copies of all the anyObj() properties like I have to make them accessible to the onclick function.
Code:
function anyObj(divObj){
this.elem = divObj;
this.width = 50;
[code]....
I have the empty object and two variables:
[Code]...
Code JavaScript:
function dropdown() {
}; dropdown.prototype = {
sele: $('.select'),
city: [],
scope: [],
type: [],
init: function(json) {
if(json.location.length) {
for(var i=0; i<json.location.length; i++) {
this.city[i] = json.location[i].city; .....
this.scope[i] = json.location[i].scope;
}}.....
getUrl: function() {
return location.pathname+location.search;
},
setUrl: function(paramType, param) {
return this.QueryString(paramType) ? this.setQueryString(paramType, param) : this.getUrl()+"&"+paramType+"="+param;
}};
I am confused about what the return keyword is actually returning when returning an object, a primitive, or a function. My confusion is compounded by the fact that I'm not sure if a function is an object or not. According to the book JavaScript Programmer Reference it is: "All functions in JavaScript are first class objects , meaning they can be passed around like any other object reference. In fact, regardless of how they are created, functions are instances of a global object named (aptly) Function."
However, someone else states that a function is not an object. An object is a set of primitives and references. A function is executable code. Functions become objects through the use of the new operator. Yet, in the book I mentioned, it says you don't need the new keyword to execute the function as an object, as it already inherits from the object Function when the function keyword is used:
function functionName([argname1 [, ...[, argnameN]]])
{
statements;
}
So there's one source of contradiction. Now the bigger issue is what is going on when the return keyword is used. Notice the Validation() function returns an object as its last expression. This technique is common, where you return an object which contains functions in form of object notation. I believe this is done so that we create a closure so that when the intepreter exits the Validation() method, since we created a closure by returning an object, which contains the inner functions addRule and getRule, the local variables of Validation() are not destroyed, given that we can reference them through the two inner functions that make use of the local variables of the outer function. So when we use the return keyword on an object literal, and then exit the function, when we call one of the inner functions as we do later:
[Code]....