Image Prototype Method Is Not Recognized
Nov 12, 2010I'm trying to add a prototype method to the Image object, but I always get the error "images[i].getSize() is not a function". Why?
View 1 RepliesI'm trying to add a prototype method to the Image object, but I always get the error "images[i].getSize() is not a function". Why?
View 1 RepliesI tried load method super as smartupdater orPeriodicalUpdater (Prototype). Now the problem is that I have to build a cycle (loop) and each time I have to change the time (that I take from database) so how method (function) can I use to load external code (example load()) modifying continuosly the timeout?
View 1 Replies View Relatedwhen I extend the Image Class (using prototype), IE6 starts to cry:
Code:
Image.prototype.resize = function(width,height) {
var inc;
if(this.width > width) {[code]....
I'm not sure if its because I have the function name resize, but it seems that the script crashes once it comes across that snippet of code.
According to ECMAScript, the root of the prototype chain is Object.Prototype. Each object has an internal property [[Prototype]] that could be another object or NULL.... However, it also says that every function has the Function prototype object: Function.Prototype, it confused me, because a function is an object, for a function object, what is its function prototype and object prototype..For example:
var x = function (n) {return n+1;};
what is the relationships of x, Object.Prototype and Function.Prototype
I am trying to get to the bottom of javascript object, prototypes etc. I have a fairly good grasp of it, but I get confused the closer I get to the base object.prototype. FIrst of all, I was under the impression that all objects descend directly from Object. But some objects (like Array) seem to inherit properties and methods from the function.prototype. So does this mean that the chain is like this:
object -- function -- array Second, I noticed (on the mozilla javascript reference site that object.prototype inherits properties and methods from function.prototype and vice versa!? How can this be? I must be missing something important about understanding the chain?
I am having issues with a new window that I create in my application
not executing its Javascript. The js is there in the source and looks
all normal, but it is simply not being recognized. I am running on
Jboss 4.0.2. Here is the code, its simple... Code:
In the following script:
function txKeyPressHandler(theEvent) {
var key = theEvent.which || theEvent.keyCode;
switch (key) {
case Event.KEY_RETURN:
txIMSendMsg();
var userAgent = window.navigator.userAgent;
if (userAgent.indexOf('MSIE 6.0') == -1) theEvent.preventDefault();
break;
}}
if I take out the if clause, forcing the preventDefault to get called even
for IE6 it causes a JS error (just in IE6).
is the event ondragstart only for IE? In that case, how to use it in
netscape 7?
i would like to use it to replace a checkbox with an image and to swap it when it's clicked.unfortunately the change is not recognized inside the internet-explorer.
here is the code:
<label
for
="footer_ger_lock"
[code]...
there is some php too that saves and displays the lock/unlock states, but i only wrote down the bare bones to keep the overview here.
The following request isn't retrieving a response when I look for it in Firebug. Any ideas why?
$function(){
//json request to flickr
$.getJSON('http://api.flickr.com/services/rest/?&method=flickr.photosets.getPhotos&api_key=71282ef5623d61a898f798c7916bed31&photoset_id=72157627882181032&format=json&jsoncallback=?'),
});
Let's say I have two images. I make one dragable. I physically move one image directly over the other. While my mouse is pressed I release it. The image underneath recognizes and gives a message indicating it's covered by the other????
View 1 Replies View RelatedI my ASP.NET master page I've got the following:
and yes, the paths are right. I still get this error in firebug no matter what: $ is not defined
I am using jQuery Superfish (with Supersubs) but I'm getting an JS error when loading the page:Error: $("ul#topmenu").supersubs is not a function I looked at the supersubs.js file but I can't figure out what the problem is. I'm calling jquery.js, jquery.superfish.js, and jquery.supersubs.js on the <head> and initiating menu as suggested:
$(document).ready(function(){
$("ul#topmenu").supersubs({
minWidth: 12,
[code]....
I'm new to programming with the DOM and new to this forum as well. I have the code below showing a web page that is simply trying to alert the user of recognized DOM nodes. I am not getting the bodyElement or textElement to be recognized by the browser. The error states that "an object is required."
<html>
<head>
<title>Trickier nesting, still</title>
<script language="JavaScript" type="text/javascript">
var myDocument = document;
[Code]...
I'm using some jquery in a website I'm building. Here's what I'm trying to do on one of the pages: I've got a span with some text and a button in it. When the button is clicked, it fires up a jquery click function for its class that is supposed to insert a textbox into it and take the text and put it in the textbox. The class of the button is also changed from "editButton" to "finishButton" so that the other click function fires, which is going to call a webmethod to update whatever the user entered in the database.
But, the function for the editButton class gets executed when it's clicked the next time instead. I know that the class of the button has changed because the css styles for the finishButton class are in effect. I also tried removing the clicked button and creating a new one dynamically, but that one does nothing at all; it doesn't go to either click function. The stuff in the .finishButton function is only there just so I can test whether or not that function actually runs. Whether it works or not, it shouldn't matter... I'm using Firebug so if I put a break point in there, it should hit it either way, right? And this is in an aspx page if that matters at all.
I have two functions show after the message. The first works fine. When a checkbox is clicked with the class availableProfile, its class is removed, selectedProfile added. It is then appended to anotehr list and destroyed in the original. However when i click the now moved checkbox it doesn't recognize it has the new class of selectedProfile.
$(".availableProfile").click(function(event) {
elementID = event.target.id;
elementGroup = elementID.split("__");
$(this).removeClass("availableProfile");
[Code]....
the below code is for a form that is validated against some external (valid.js) functions. It's my first forray into Event Delegation and stupidly (testing in FF only just now) I didn't realise that the addEventListener isn't recognised in IE. Anyone got an idea which way I should look at sorting it. I am still searching and playing around but can't seem to find the right solution.
[Code]...
[code] Hide from browsers that do not understand Javascript.The addLoadEvent function adds functions to the window.onload command to load multiple functions at startup function addLoadEvent(func)[code]When the page loads I get the nice alert box that says loading and then one that says count equals 0.When i click my edit list drop down and choose modify I get a message box that reads count equals in edit function 0.If I type text in the textbox and leave the text box I get an alert box that reads count equals in subcheck function Undefined and then another one that says NaN.
View 7 Replies View Relatedproblem: input values not recognized in dinamicly loaded IFRAMEs
here is the thing I have a parent window that has an IFRAME
I then load a diffrent page into the IFRAME that contains an input
when I try to access - iFrm.document.all["grid_name"].value
i get an error saying that - "value is null or not an object"
I tryed checking to make sure the page is fully loaded using:
document.readyState=="complete" and it is loaded and completed
the weirdest thing is that when debugging the error I can see the value
in the debbuger and after that I get the value alerted just fine
so how come I get an error ????? Code:
My HTML looks something like the following:
<label for="myTextBox">
Name:<span style="color:red;">*</span>
<input type="text" id="myTextBox"></input>
</label>
In my document ready I have a function which runs 'on blur' of the textbox and hides the span. The following code DOESN'T work to hide the span:
$('#myTextBox').closest('span').hide();
I'm currently using the code below which does work but was wondering why the above code doesn't....
$('#myTextBox').parent().children(':first').hide();
I'm trying to do something, but I don't know if it's possible.
Basically, I want to have a public static class method that could
access a private object's method. I would like to be able to do :
Class.method(InstanceOfClass);
The method would then access a private function from Class by doing
something like
function method(param) {
param.privateMethodOfClass();
}
I've done a lot research and experimentations but just can't come up
with a solution... I don't even know if what I'm trying to do is
possible.
Why is the callwhy is the slice method only a method of an Array instance? The reason why I ask is because if you want to use it for the arguments property of function object, or a string, or an object, or a number instance, you are forced to use Array .prototype slice.call(). And by doing that, you can pass in any type of object instance (Array, Number, String, Object) into it. So why not just default it as a method of all object instances built into the language?In other words, instead of doing this:
function Core(){
var obj = {a : 'a', b : 'b'};
var num = 1;[code]....
//right now none of the above would work but it's more convenient than using the call alternative.
}
Core('dom','event','ajax');
Why did the designers of the javascript scripting language make this decision?
I'm working with a form that has both static and dynamic form elements (add textbox, etc), and while I can access the static elements via request.form, the dynamic elements cannot be accessed. I have the dynamic elements appended within a div that lies within a table.
Here is the javascript:
Code:
function add3<%=strGoalCount%><%=strObjCount%>() {
var foo = document.getElementById('fooBar<%=strGoalCount%><%=strObjCount%>');
var numi = document.getElementById('theValue');
var num = (document.getElementById('theValue').value -1)+ 2;
[Code]....
I have two methods and I would like to call somename1 method from within somename2 method. I have tried several ways to do so however I keep getting "TypeError" or "RefernceError" I have tried several ways to reference but I am still unable. What am I doing wrong. I would think this would be easy to do.
View 1 Replies View Relatedwhy my position:fixed is being recognized by IE?
It's an embedded link:
<font face="gill sans"><a href="#sect1" title="test" style="position:absolute; top:100px; left:40px; text-decoration: none; color: gray; font-size: 15; target="_blank">OUR GOALS</a></font>
It works fine in Safari and Firefox...
Is the form below a valid method of changing the id of an XHTML element, specifically the one actually being referenced? It does not seem to work for me.
document.getElementById("Original_Name").setAttribute("id", "New_name");