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