What is the role of throw statement in JavaScript?

HTMLJavascriptProgramming Scripts

Use the throw statement to raise your built-in exceptions or your customized exceptions. Later these exceptions can be captured and you can take appropriate action.

Example

You can try to run the following code to implement throw statement −

<html>
   <head>
      <script>
         <!--
            function myFunc()
            {
               var a = 100;
               var b = 0;
               try{
                  if ( b == 0 ){
                     throw( "Divide by zero error." );
                  } else {
                     var c = a / b;
                  }
               }
               catch ( e ) {
                  alert("Error: " + e );
               }
            }
         //-->
      </script>
   </head>

   <body>
      <p>Click the following to see the result:</p>
      <form>
         <input type = "button" value = "Click Me" onclick = "myFunc();" />
      </form>
   </body>
</html>
raja
Published on 23-Feb-2018 16:44:18
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