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How to Execute a Function Only Once After Window Resizing in JavaScript/jQuery?
How to Execute a Function Only Once After Window Resizing in JavaScript/jQuery?
Nov 04, 2024 pm 03:58 PM
Delayed Execution after Window Resizing in JavaScript/jQuery
The $(window).resize event in JavaScript and jQuery is triggered when the browser window resizes. However, it often fires multiple times during manual resizing by dragging the window edge.
Achieving Single-Time Invocation:
To call a function only once after the resize is complete, a timer can be used to delay execution until the resizing process has finished. Here's a solution:
Solution:
<code class="javascript">var waitForFinalEvent = (function () {
var timers = {};
return function (callback, ms, uniqueId) {
if (!uniqueId) {
uniqueId = "Don't call this twice without a uniqueId";
}
if (timers[uniqueId]) {
clearTimeout (timers[uniqueId]);
}
timers[uniqueId] = setTimeout(callback, ms);
};
})();</code>
Usage:
<code class="javascript">$(window).resize(function () {
waitForFinalEvent(function(){
alert('Resize...');
//...
}, 500, "some unique string");
});</code>
In this solution, a unique identifier is used for each callback to handle multiple event registrations.
This approach ensures that the callback function is called only once, after a specified delay, giving enough time for the resizing to complete and prevent redundant event firing.
The above is the detailed content of How to Execute a Function Only Once After Window Resizing in JavaScript/jQuery?. For more information, please follow other related articles on the PHP Chinese website!
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