How to provide new line in JavaScript alert box?



To add a new line in JavaScript alert box, use the “
”:

alert("Line One
Line Two");

Example

You can try to run the following code add a new line in an alert box in JavaScript:

Live Demo

<html>
   <head>
      <script>
         <!--
            function Warn() {
               alert ("This is a warning message!
This is a new line.");                document.write ("This is a warning message!");             }          //-->       </script>    </head>    <body>       <p>Click the following button to see the result: </p>       <form>          <input type="button" value="Click Me" onclick="Warn();" />       </form>    </body> </html>

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