This can be seen in the following example, in which we nest a call to setTimeout with a delay of 0 milliseconds, and log the delay each time the handler is called. In this post, I'll discuss how you can achieve that and what it really means to 'pause' or 'sleep' in JavaScript. As specified in the HTML standard, browsers will enforce a minimum timeout of 4 milliseconds once a nested call to setTimeout has been scheduled 5 times. But one of the things which JavaScript misses is a way to 'pause' execution for a while and resume it later. Simple Example The following example shows a memory leak caused by using the Choices.js library in a Vue component and not properly cleaning it up. setTimeout () accepts time in milliseconds, so setTimeout (fn, 1000) tells JavaScript to call fn after 1 second. Spoiler: JavaScript never really "pauses". One of those features are Promises, which are probably the most widely used feature in JavaScript after ES5 was released. Memory leaks in Vue applications do not typically come from Vue itself, rather they can happen when incorporating other libraries into an application. To delay a function execution in JavaScript by 1 second, wrap a promise execution inside a function and wrap the Promise's resolve () in a setTimeout () as shown below. In this post, I'll discuss how you can achieve that and what it really means to "pause" or "sleep" in JavaScript. One of those features are Promises, which are probably the most widely used feature in JavaScript after ES5 was released.īut one of the things which JavaScript misses is a way to "pause" execution for a while and resume it later. More and more ideas and features are being ported from different languages and being integrated in JavaScript. And it hasn't been the same since ES5 was released.
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