I am developing some JavaScript that should work with either Prototype.js or JQuery, thus I need some way to identify what is the primary library in use. How can I do that?
Is it bad javascript practice to not assign a newly created object to a variable if you're never going to access it?
For example:
for(var i=0;i<links.length;i++){
new objectName(links[i]);
}
And again, I won't be accessing it, so there's no need for a variable to reference it.
Hi,
I am using a third party library that provide some callbacks for a widget, but I'm not sure what the callback parameter objects are (no docs on them).
Is there a way to just dump all the attributes of an object in javascript, then print them using alert(), maybe? I just want to see what methods and attributes they contain,
Thanks
I have a Javascript Object like
var obj = {
key1: 'value1',
key2: 'value2',
key3: 'value3',
key4: 'value4'
}
How can I get the length and list of keys in this object.
I have asp:Table with number of asp:Label inside asp:FormView, it represents short stats info.
I need to set Label.CssClass to "red" if it's text isn't "0".
Currently I do this on FormView.DataBound event. But think that it's better to use JavaScript and probably jQuery. How can I do that?
Can't believe how difficult this seems to be all I want to is to validate a user inout using javascript to make sure that it is an email address. But can't get it to work:
I am using:
//validates a regulaer expression
Utilities2.prototype.validateEmail = function(stringToValidateArg)
{
alert('about to check regexp');
var regExpPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
alert(regExpPattern.test(stringToValidateArg));
}
But this always returns false, any ideas why is it because of the regular expression?
Hello!
Is there a way to kill the unload function with javascript(jquery)?
I am looking for something like this:
window.onbeforeunload = function(){
confirm("Close?")
}
or in jquery:
$(window).unload(function() {
confirm("close?")
});
Now, on window unload I get my confirm alert but it will continue in any case. Clicking cancel it won't stay on my page.
Can U help me plz?
My javascript looks like the following. I don't understand why these methods are all public though?
Something.RegisterNamespace("One.ABC");
(function(ABC) {
ABC.SayHello = function() {
alert('hello');
};
})(One.ABC);
So now I can do:
One.ABC.SayHello();
I'm trying to run .ajax and insert a data element from the onClick of an item from the page. Whats the best way to do this?
Something like this:
function grabinfo(foo){
$.ajax({
url: "infospitter",
method: "GET",
data: "id="+foo,
success: function(html){
$(#showstuff).html(html);
}
});
}
<input onClick="javascript:grabinfo(18343)" />
// and on page each item will have this button input
Hi,
I want to display a "Go to top"-Link on my website.
This link should only be visible, if the vertical scrollbar is visible.
How can I do this using JavaScript?
Thanks
Is there a library that can be used for implementing undo/redo functionality for DOM element manipulations in JavaScript?
I'm writing an app that moves around DOM elements, enables editing and deletion of those elements. There are event-handlers and other objects associated with each element operated upon.
Not sure whether I need to roll my own implementation of the Command pattern for this. Surely, there must be something available? If not, suggestions and pointers would be a great help.
Hi
I want to have a drop down menu where a user can select from several predefined options but i also want to give him the option of inserting a user specific value, i was thinking having one of the options as "user specific" which will in turn allow the user to insert a user specif entry in a text box that appears or is editable when user selects the "user specific" option. any one have any ideas how i can implement this is HTML and Javascript?
thank you
Hi,
I have seen some captchas being decode using javascript, php, etc. How do they do it?
For example, very popular megaupload site's captcha has also been decoded.
Hello, I need to implement in Html/javascript (or php is possible) a script which works like twitter, when the user writes text in a field a label change showing the characters left.
Can you help me with a simple and easy script example?
Hello fellow front-end web h4X0|2s,
I was wondering if anyone had any resources, proof, or personal experience in using the age-old http/https JavaScript hack:
<script src="//someserver.com/js/script.js"></script>
Has anyone encountered issues in any of these browsers (IE 5.5+, FF2+, Chrome, Opera 9+, Safari 3+)? Has anybody had success stories?
Thank you for your help.
I want to check the performance of the gzip decoding speed in a web browser.
In the Java or c#, we can easily check the gzip decoding time.
But I can not measure the decoding time in the web browser.
plz help me.
I want to check some decoding speed of gzipped html files.
With JavaScript can I measure the performance.
My firefox downloads the JSON response of an AJAX call as a file.
It's suppose to be handled by the JavaScript i.e. JSON object.
Can anyone explain how to stop this behavior or there is something I am missing.
Thanks.
i have a parent window and a child window. in javascript, i want a function in child window to be called whenever the parent window loads a new page. i'd like to use something similar to jQuery's $(document).ready() so that I don't have to worry about whether the parent is done loading yet - but ready() only appears to fire when the window loads the first page - but not when, say, a link is clicked in the parent and it loads a second page.
any suggestions? thanks.
I am developing Javascript app that will wrap every line of text entered inside iframe (designmode) with P (or div) like it happens by default in IE.
For now I am not pasting my code because I just started, the first problem is when i type some text in firefox and even before I click enter or calling any function firebug inserts
<br _moz_dirty="">
under the entered text.
Why? How can I prevent it?
If you still need my code please tell.
We are using Java and Javascript to try to display a huge sheet with freeze panes, but it is being very difficult. Does someone know about a library, method, script or something, either free or commercial, to do this?
Thanks.
Hello,
I have a div element in HTML document.
I would like to extract all elements inside this div that starts with a known text (e.g. "q17_").
How can I achieve this using JavaScript ?
(If needed, for simplicity, I can assume that all elements inside the div are of type input or select.)
Thanks !