For this to work, you would need to call the sleep () function from the async method, using the await keyboard. Here the main thread is not blocked while the asynchronous requests wait for a request to respond or a timer to finish.
It allows the main execution thread to continue while waiting asynchronously for the completion of the costly I/O operations. Since neither the first nor the second function's timers have completed, the third function is called and completes its execution first. With the help of async, promises, and await, you can now write a sleep () function that really works to its full potential. Asynchronous Function In JavaScript Asynchronous code does not wait for I/O operations to complete. 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. 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. Timeouts allow you to run code after a certain amount of time has passed. 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.
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