Javascript : Client Side Scripting :: JavaScript Popup Boxes

Javascript : Client Side Scripting :: JavaScript Popup Boxes

• Alert Box
• Confirm Box
• Prompt Box

In JavaScript we can create three kinds of popup boxes:

• Alert box,
• Confirm box, and
• Prompt box.

• An alert box is often used if you 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”);

• 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 click 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”);

• 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”);