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What will happen when [demo] is converted to Number in JavaScript?

Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert ["demo"] to Number in JavaScript −

Example

<!DOCTYPE html>
<html>
   <body>
      <p>Convert ["demo"] to Number</p>
      <script>
         var myVal = ["demo"];
         document.write("Number: " + Number(myVal));
      </script>
   </body>
</html>