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how to show alternate image if source image is not found? (onerror working in IE but not in mozilla)
...myImage' /></td>
</tr></table>
<script type='text/javascript'>
document.getElementById('myImage').src = "newImage.png";
document.getElementById('myImage').onload = function() {
alert("done");
}
document.getElementById('myImage').onerror = function() {
...
How to log out user from web site using BASIC authentication?
...y bobince ...
With Ajax you can have your 'Logout' link/button wired to a Javascript function. Have this function send the XMLHttpRequest with a bad username and password. This should get back a 401. Then set document.location back to the pre-login page. This way, the user will never see the extra ...
What is a good regular expression to match a URL? [duplicate]
... for a version which is less restrictive http://regexr.com/3e6m0.
Example JavaScript implementation:
var expression = /[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)?/gi;
var regex = new RegExp(expression);
var t = 'www.google.com';
if (t.match(rege...
Prevent any form of page refresh using jQuery/Javascript
...lemented via window.onbeforeunload.
For example:
<script type="text/javascript">
window.onbeforeunload = function() {
return "Dude, are you sure you want to leave? Think of the kittens!";
}
</script>
The user will be prompted with the message, and given an option to...
How to check if element has any children in Javascript?
Simple question, I have an element which I am grabbing via .getElementById () . How do I check if it has any children?
8 A...
JavaScript get clipboard data on paste event (Cross browser)
...HTML
<div id='editableDiv' contenteditable='true'>Paste</div>
JavaScript
function handlePaste (e) {
var clipboardData, pastedData;
// Stop data actually being pasted into div
e.stopPropagation();
e.preventDefault();
// Get pasted data via clipboard API
clipboar...
Trigger a button click with JavaScript on the Enter key in a text box
I have one text input and one button (see below). How can I use JavaScript to trigger the button's click event when the Enter key is pressed inside the text box?
...
How to get screen width without (minus) scrollbar?
...h = $("body").prop("scrollWidth"); // El. width minus scrollbar width
in JavaScript:
var actualInnerWidth = document.body.clientWidth; // El. width minus scrollbar width
var actualInnerWidth = document.body.scrollWidth; // El. width minus scrollbar width
P.S: Note that to use scrollWidt...
Do HTML5 custom data attributes “work” in IE 6?
...o make the missing collections.” — Yeah, that’s the nice thing about JavaScript as compared to CSS: because it’s a programming language, you can fix compatibility issues yourself.
– Paul D. Waite
Mar 10 '10 at 22:22
...
jQuery ajax error function
...
In JavaScript, say you have a method - function myMethod (err) { alert(err); } and then call it like myMethod ("something is wrong", 500, some_object) - This will work without any issue. As per your statement, this would only wo...