How to use window setTimeout() Method JavaScript

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.

Tip: Use the clearTimeout() method to prevent the function from running.

Syntax settimeout

setTimeout(function, milliseconds, param1, param2, …)

Display an alert box after 3 seconds (3000 milliseconds)

setTimeout(function(){ alert("Hello"); }, 3000);