How to define a JavaScript function using Function() Constructor?

Javascript Web Development Front End Technology

The Function() constructor expects any number of string arguments. The last argument is the body of the function - it can contain arbitrary JavaScript statements, separated from each other by semicolons.

Example

You can try to run the following code to invoke a function with new Function Constructor −

<html>
   <head>
      <script>
         var func = new Function("x", "y", "return x*y;");

         function multiplyFunction(){
            var result;
            result = func(15,35);
            document.write ( result );
         }
      </script>
   </head>
   <body>
      <p>Click the following button to call the function</p>

      <form>
         <input type = "button" onclick = "multiplyFunction()" value = "Call Function">
      </form>
   </body>
</html>

Nikitha N

Updated on: 22-Jun-2020

101 Views

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