How to provide new line in JavaScript alert box?

Javascript Web Development Front End Technology

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>