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Collisions when generating UUIDs in JavaScript?
...uestion . I am using the code below from this answer to generate UUID in JavaScript:
6 Answers
...
Get attribute name value of
...D').getAttribute("name");
My results:
jQuery: 300k operations / second
JavaScript: 11,000k operations / second
You can test for yourself here. The "plain JavaScript" vesion is over 35 times faster than the jQuery version.
Now, that's just for one operation, over time you will have more and mo...
When is JavaScript's eval() not evil?
I'm writing some JavaScript code to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result.
...
Explanation of …
...t> , which contained code that looks like something out of PHP but with JavaScript tags.
7 Answers
...
window.onload vs
...e same event. Using window.onload is less obtrusive though - it takes your JavaScript out of the HTML.
All of the common JavaScript libraries, Prototype, ExtJS, Dojo, JQuery, YUI, etc. provide nice wrappers around events that occur as the document is loaded. You can listen for the window onLoad eve...
getting the X/Y coordinates of a mouse click on an image with jQuery [duplicate]
...w:
<img id='myImg' src='/my/img/link.gif' />
<script type="text/javascript">
$(document).bind('click', function () {
// Add a click-handler to the image.
$('#myImg').bind('click', function (ev) {
var $img = $(ev.target);
var offset = $img.of...
Case-insensitive search
I'm trying to get a case-insensitive search with two strings in JavaScript working.
11 Answers
...
Executing elements inserted with .innerHTML
... script = document.createElement("script");
script.type = "text/javascript";
try {
// doesn't work on ie...
script.appendChild(document.createTextNode(data));
} catch(e) {
// IE has funky script nodes
script.text = data;
}
head.insertBefore(s...
Get difference between 2 dates in JavaScript? [duplicate]
...n be written as,
const _MS_PER_DAY = 1000 * 60 * 60 * 24;
// a and b are javascript Date objects
function dateDiffInDays(a, b) {
// Discard the time and time-zone information.
const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
const utc2 = Date.UTC(b.getFullYear(), b.getMonth...
HTML tag want to add both href and onclick working
..." onclick="return theFunction();">Item</a>
<script type="text/javascript">
function theFunction () {
// return true or false, depending on whether you want to allow the `href` property to follow through or not
}
</script>
The default behavior of the <a> ...