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HTML | Window alert( ) Method
The Window alert() method is used to display an alert box. It displays a specified message along with an OK button and is generally used to make sure that the information comes through the user.
It returns a string which represents the text to display in the alert box.
Syntax:
alert(message)
Below program illustrates the Window alert() Method :
Displaying an alert box.
<!DOCTYPE html><html> <head> <title> Window alert() Method in HTML </title> <style> h1 { color: green; } h2 { font-family: Impact; } body { text-align: center; } </style></head> <body> <h1>GeeksforGeeks</h1> <h2>Window alert() Method</h2> <p> For displaying the alert message, double click the "Show Alert Message" button: </p> <button ondblclick="myalert()"> Show Alert Message </button> <script> function myalert() { alert("Welcome to GeeksforGeeks.\n " + "It is the best portal for computer" + "science enthusiasts!"); } </script> </body> </html> |
Output:
After clicking the button
Supported Browsers: The browser supported by Window alert( ) Method are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
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