JavaScript Dialog Box
A JavaScript dialog box is predefined function which is used to perform different task.
Some functions are used in JavaScript Dialog box.
| Function | Description |
|---|---|
| alert() | To give alert message to user |
| prompt() | To input value from used |
| Confirm() | To get confirmation from user before executing |
Alert()
Alert() function in JavaScript is used to give an alert message to the user.
Example
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<!DOCTYPE html> <html> <body> <script> function alertmsg() { alert("Alert function call"); } </script> </body> <form> <input type="button" value="Click Me" onclick="alertmsg()"/> </form> </html> |
prompt()
Prompt function in JavaScript is used to get input from user.
Example
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<!DOCTYPE html> <html> <body> <script> function alertmsg() { a=prompt("Enter your name:"); alert(a); } </script> </body> <form> <input type="button" value="Click Me" onclick="alertmsg()"/> </form> </html> |
Confirm()
Confirm function in JavaScript is used to get confirmation from user before executing some task.
Example
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<!DOCTYPE html> <html> <body> <script> function alertmsg() { a=prompt("Enter your name:"); confirm(a); } </script> </body> <form> <input type="button" value="Click Me" onclick="alertmsg()"/> </form> </html> |