I would like a function to be run whenever a variable is updated. I
have tried binding the onchange event to it, and it doesn't work. I
think I understand why, however, I would like to know if there is
anything that I can bind to my variable that will fire the specified
function whenever the value changes.
Is it possible to do this, or would I have to make a class for it?
I want to bind a function to an event without having to put the entire code into the anonymous function that I'm binding to the event. How can I do this?
When I bind a function using the following code, the details function displays the error message for few seconds:
window.onload = function(){ $(".error").hide(); if (document.getElementById("featureForm")){
I need to bind an event to first link here [URL]("share", white cross on orange)problem is whatever I do is overwritten (or just ignored) by the plugin..I just need to pop a div with a little disclaimer..this is the link:
I'm trying to build a Validation object, where you pass an object id and event name in the constructor. Then, you call an add_rule method to add validation rules. The constructor code looks something like:
function Validation(id, event, ...) { this.object = document.all[id]; this.event = event; var obj = this.object; obj[event] = this.validate; }
So the actual validation function is dynamically bound to the appropriate event. The problem is that when the validate method is called, "this" no longer refers to the Validation object; it refers to the object to whose event it was bound. So, for instance, in the following code, the validate function's "this" refers to frmSubmit, not objValidate:
objValidate = new Validation ("frmSubmit", "onsubmit", ...);
Of course, I need to refer to the actual validation object's properties, but I can't figure out how. Any suggestions?
I have a question that's probably basic javascript, but I can't find the answer.So if any of you can point me in the right direction?This is the problem:I want to loop through an array and in each iteration I want to bind a value from that array to a click event.I made a small example where I only bind the first iteration to a click event.
$(document).ready(function(){ var dummy=new Array(); dummy[0]=1;
New to javascript/jquery and have a question regarding scope. I want to bind an event within my class so it calls one of the class methods. The problem I run into is that the event handler is a anonymous function that runs outside the scope of the class, therefore it doesn't see the class methods or properties.
Is there a proper way to deal with this: Sample code: function myObject(tag) { // properties this.myvar = 'test'; this.tag = tag; // methods function sendRequest() { alert(this.myvar); } // initialization $(this.tag).click( function() { this.sendRequest(); });}
I have developed a plugin for mutual selection on a list of elements.It works fine if I make those element into mutual list only once. like $("appropriateSelector").toMutualSelect(); that plugin will add click event handler to each element and they remember the whole list by enclosure.
If I add new elements to that list. and do$("appropriateSelector").toMutualSelect(); again. New elements will behave as expected but old ones will have problems. Each old element will have the same handler bind multiple times to them. That will result like toggle two times andmessingup the outcome. How do I prevent this? I am trying to clean up their bound handlers but seems no luck.
I am not sure - I made ajax call through jquery form plugin, return response is HTML fragments, and inserted to a <div> place holder, work as expected.However, previous HTML segments have binding events (such as click) seems lost after the insertion ... is this expected behavior? and what are the proper way to re-instate those events?
using JQuery 1.3.2.js How can i bind change event of future added drop-down. i have even used ".live" method of jQuery but it doesn't work.I have even updated JQuery1.3.2.js to JQuery 1.4.js but same thing happens drop down change event is not getting fired but click and other events are getting fired.
I have a piece of javasacript code that searches through several iframes for buttons with specifi id's. When I find the button, I bind a click event to that button. This works perfectly fine in IE, but only works in Firefox if I alert something. After I click on the alert button ok, the click events are assigned correctly and the buttons work fine. See my code below for achieving this:
$.each(iframe, function(index, ifrm) { // Add target="_blank" to text hyper links var hyper = null, hyperCount = 0;
I am working on a script to allow the user to click on an image to turn table header locking on and off. Everything appears to work fine, with the exception of one quirk that is occurring when I run the test page in Internet Explorer (7, in this case). If you click on the icon once to turn on header locking, it works. If you then click the icon again, it turns off header locking, as it is supposed to. But after that, you can no longer click on the icon. It is as if it loses the event binding. I am not removing or in anyway creating a new instance of the icon (although I did try using live() instead of click() just to be safe). Also, if I run this same page in Firefox, I do not have this problem. You can see the example page and view the complete source at [URL]
in a table I want to have a specific click event (calling a function) for the first cell of each row and another function call e.g. for the third table cell.I assigned different class names to these cells and used this script:$("#tab_kat tr").find(".firstCell").bind("click", function() { ... });And the same for ".thirdCell".But is this possible without assigning class names to reduce the size of the code?Something like that:$("#tab_kat tr td.cells[1]").bind("click", function() { ... });
We know that multiple calls to $(document).ready(); in the same page is possible.
I have a situation where another team implemented a $('#element').live('click', function() { /* Do this */} ); call on #element. I cannot modify this code, but I need to take an additional action on the same element on the same event. So, two actions will occur when #element is clicked.
I tried making $('#element').live('click', function() { /* Do that */} ); but this call does not fire.
It needs to be .live() since #element is being dynamically added.
Is there any way to add more actions to the same event on #element?
On the very next line I am attempting to bind a submit event handler to the form:
$('#loginform').submit(function() { $.post('member.php', $(this).serialize(), function(data, status) { data = eval('(' + data + ')'); if (data.msg) {
[Code].....
The form is loading fine, but for some reason the submit() is not getting attached to the form. Therefore when I submit it is running member.php from the form "action". Ultimately, I want to be able to run member.php from $.post() so that I can tell member.php that JavaScript is enabled.
I want to execute some code when a node is either selected or deselected but I only want specific nodes not the whole tree.
Normally, I think you bind an event when you create the tree like $ ('.sidecontent').bind(........).jstree(data.tree); but that's for the whole tree, which I don't want. I have a selector for the nodes I want like $('a[id*="room_1"]') but I don't know how to bind an event to those nodes only. Is this possible? If it is, then what event should I use?
Well the topic pretty much sums up the problem. I'm pretty familiar with using events to alter the value of an html tag or attribute via the DOM. I was wondering if it is possible to use an event to alter the value of a variable within. Well I wrote the script below to test that and sure enough it didn't work. So if by some chance it is possible to use events to do alter the value of a variable, how does one go about that?[code]...
I was wondering if anyone knew if/how to assign an event to a global variable?
I tried to do it and IE 7 came back with an error saying "Member not found" My code looked similar to the following:
var globalEvevnt; function showPopup(event){ globalEvent = event; alert(globalEvent.type); setTimeout(function(){unhideDiv()}, 2000 );
}
function unhideDiv(){ alert(globalEvent.type); //Member not found error found on this line }
I was wondering if I had declared the globalEvent = new Object(); would that make any difference? I thought everything in JS was an object so the event could be stored to one as well?
In hover, the structure is Code: $("div.x2").hover( function(){ var a = 1;}, function(){ alert(a);} );
If I want to access a that was set in the mouseover part of this structure, or I want to change the value of a from the second function, do I have to create a global variable that can be accessed by both or is there a way to pass this variable back and forth between the two functions since they are both within the hover event?
I have this web application where users are able to fill out and submit reports. The reports and scripts are part of a whole system, that is, they are used on a couple of different clients written in both vb and c#. This is the web-version of those clients.The scripting language is javascript and is executed using different script engines on the different systems. But for the web-version it is just executed in the browser.The different fields in the report can be accessed by typing:ID1.value. To get ID1 to apply for the input-field with id ID1 I had to in the initfunction of the page write a window["ID1"] = document.getElementById("ID1");
But my problem is when this element change. Cause in the report I have a special element that in the browser is translated to a table-element with a report-field in each cell.When I switch the current row, I need to update the window["ID1"] to equal the correct report field on the selected row. But when trying to access the new variable ID1 from a buttons onclick event it is undefined.<input type="text" id="test" onclick="alert(ID1.value);" />What I think happens is that when the page is first drawn the onclick event is created and as I understand, variables inside an event has the same value as when the event was created.
So if ID1.value was something when the page was created it will be the same when it is called even if the value of ID1 is different. And that seems to be the case. When I debug the page, before entering the event, ID1.value has the correct value while inside the event it is undefined and after the event it has the correct value. If I write window["ID1"] correct value is also shown.But a weird thing is that in another place in the code I had the same problem but instead of having the code inside the onclick event I first had a global function changeActiveRow and inside that I had an eval, eval(document.getElementById("ID1_script")) where ID1_script is a hidden element whos value is a script using ID1.value and that works.
I have a setting where I construct an image reference which I then append somewhere in the DOM, like so for instance:
var one = "<img src = "test.jpg" "; var two = "/>"; var my_img = one + two;
and then I add it to DOM using after() function. It works fine. However, I also need to add a click event to it. I tried to do this:
my_img.click(function(){ });
and then append it using after(), but it doesn't seem to work. One thing I can think of is append it after a certain ID, then look for it as a child of that ID and add click to it this way. I haven't tried this, but it'll probably work.