Cancellation of setTimeout()
JavaScript provides a corresponding function called clearTimeout() to cancel a scheduled timeout before it gets executed.
Example: In this example, we have shown the cancellation of settimeout..
function delayedFunction() {
console.log("This won't be executed due to clearTimeout");
}
let timeoutId = setTimeout(delayedFunction, 2000);
// Cancel the setTimeout before it executes
clearTimeout(timeoutId);
console.log("Timeout canceled");
What is the purpose of setTimeout() function in JavaScript ?
In JavaScript, the setTimeout() function is vey good for adding delays or scheduling the execution of a specific function after a certain period. It’s a key feature of both browser environments and Node.js, enabling asynchronous behavior in code execution. Whether you’re building a web application or a server-side script, setTimeout() offers flexibility in managing timing-related tasks without blocking the rest of your program’s flow.
Syntax:
setTimeout(function, milliseconds, arg1, arg2, ...);
Parameters:
- function: After the specified time period, this is the function that is executed.
- milliseconds: The delay time is expressed in milliseconds.
- arg1, arg2: If needed, these are the optional parameters.