What is setTimeout returned?

The setTimeout() returns a timeoutID which is a positive integer identifying the timer created as a result of calling the method. The timeoutID can be used to cancel timeout by passing it to the clearTimeout() method.

How do you wait in JavaScript?

The standard way of creating a delay in JavaScript is to use its setTimeout method. For example: console. log(“Hello”); setTimeout(() => { console.

Can a function return a value in JavaScript?

JavaScript functions can return a single value. To return multiple values from a function, you can pack the return values as elements of an array or as properties of an object.

What is return in JavaScript?

The return statement is used to return a particular value from the function to the function caller. The function will stop executing when the return statement is called. The return statement should be the last statement in a function because the code after the return statement will be unreachable.

How does a function return a value?

To return a value from a function, you must include a return statement, followed by the value to be returned, before the function’s end statement. If you do not include a return statement or if you do not specify a value after the keyword return, the value returned by the function is unpredictable.

How to get value from setTimeout in JavaScript?

The function that called setTimeout ( x in your example) will finish executing and return before the function you pass to setTimeout is even called. Whatever you want to do with the value you get, you need to do it from the function you pass to setTimeout.

Is the setTimeout function asynchronous in JavaScript?

One potential caveat to be aware of is the fact that setTimeout is asynchronous. It queues the function reference it receives to run once the current call stack has finished executing. It doesn’t, however, execute concurrently, or on a separate thread (due to JavaScript’s single-threaded nature).

When to use the setTimeout ( ) method?

The setTimeout () method calls a function or evaluates an expression after a specified number of milliseconds. Tip: 1000 ms = 1 second. Tip: The function is only executed once. If you need to repeat execution, use the setInterval () method.

Can you use an arrow function in setTimeout?

You can, of course, use them with setTimeout, but there’s one gotcha to be aware of — namely, that arrow functions don’t have their own this value. Instead, they use the this value of the enclosing lexical context. Using a regular function: