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<!DOCTYPE html>
<html>
<body>
​
<p>JavaScript has an built-in function constructor.</p>
<p id="demo"></p>
​
<script>
var myFunction = new Function("a", "b", "return a * b");
document.getElementById("demo").innerHTML = myFunction(4, 3);
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_function_constructor by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 13:23:26 GMT -->
</html>
​
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