setTimeout

The window object represents an open window in a browser.
The window object has a built-in method called setTimeout.
This method will execute a callback function (or evaluate an expression) after a specified number of milliseconds.
Here is an example using a Named Function.

function myCallbackFunction() { 
   console.log("callback"); 
} 
window.setTimeout(myCallbackFunction, 1000); 

Here is the same code using an Anonymous Function.

window.setTimeout(function() { 
   console.log("callback"); 
}, 1000); 

Using Async

async function myAsyncFunction() { 
   const myPromise = new Promise((resolve, reject) => { 
      setTimeout( () => resolve("Return This String") , 1000) 
   }); 

   const theResult = await myPromise; 

   console.log(theResult); 
} 
myAsyncFunction();