HTML Window alert() Method
The HTML 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 that represents the text to display in the alert box.
Syntax:
alert(message)
Below example illustrates the Window alert() Method:
Example: In this example, we will display an alert box by double-clicking a button.
html
<h1 style="color: green;"> GeeksforGeeks</h1><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> |
Output:
Supported Browsers: The browser supported by Window alert( ) Method are listed below:
- Google Chrome 1
- Edge 12
- Internet Explorer 4
- Firefox 1
- Opera 3
- Safari 1
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.
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