This means it does not block the execution of the rest of the script, which is what you want in the vast majority of the cases. await only pauses the current async function. We can make the timeout resolve a promise after a specified amount of time has passed, thereby allowing us to continue the execution of the code after the timeout has passed.įirst, let's create a promise that resolves after a timeout is passed. await can only be executed in functions prefixed with the async keyword, or at the top level of your script in an increasing number of environments. This returns the number of milliseconds passed since the Epoch time. The time that the sleep function starts is first found using the new Date ().getTime () method. Since neither the first nor the second function's timers have completed, the third function is called and completes its execution first. Method 1: Using an infinite loop to keep checking for the elapsed time. Timeouts allow you to run code after a certain amount of time has passed. While the first function is waiting to execute, the second function is called, and a 3-second wait is applied to the second function before it executes.

You can pause the execution of a JavaScript function for a specified amount of time by taking advantage of the timeouts feature of the JavaScript engine and promises.

Await sleep javascript