0 Three types of Popup boxes in JavaScript

Alert Box

An alert box is often used if u want to make sure information comes through to the user. When an alert box pops up, the user will have to click "OK" to proceed.

Syntax

alert ("sometext") Alert Box with Line Break alert ("sometext \n Good Morning")


Confirm Box

A confirm box is often used if you want the user to verify or accept something

When a confirm box pops up, the user will have to check either "OK" or "Cancel" to proceed.

If the user clicks "OK", the box returns true.If the user clicks "Cancel" the box returns false.

Syntax

confirm ("sometext")

Prompt Box

A prompt box is often used if you want the user to input a value before entering a page.

When a prompt box pops up, the user will have to click either "OK" or "Cancel" to proceed after entering an input value.

If the user clicks "OK" the box returns the input value.If the user clicks "Cancel" the box returns null.

Syntax

prompt ("sometext" , "defaultvalue")