![]() ![]() SetTimeout() accepts time in milliseconds, so setTimeout(fn, 1000) tells JavaScript to call fn after 1 second. However, if you're thinking other asynchronous tasks in the client will be completed while it's running, then you obviously haven't tested it. The execution will start from the sleep () function. The below code has 3 function func1, func2 and sleep () function. ![]() In this post, we've covered how you can combine timeouts and promises to support sleeping for a specified amount of time. Implement a sleep () Function Without Promise, async and await in JavaScript Let’s first see what happens when we don’t use promise, async, and await in our program. If this argument is omitted, a value of 0 is used, meaning execute immediately, or more accurately, as soon as possible. You can even define sleep in a single line of code: const sleep (duration) > new Promise(resolve > setTimeout(resolve, duration)) Now that's some beautiful code Conclusion. 2: The time, in milliseconds (thousandths of a second), the timer should wait before the specified function or code is executed. 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. Gzork Thread sleep is only one way to implement a wait function, and it's unfortunately not available in the context of client-side javascript. setTimeout () takes in two parameters: 1: A function to be executed after the timer expires. Application of time.sleep () There are many applications that sleep () is used for. ![]()
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