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<!DOCTYPE html>
<html>
<body>
​
<p>"use strict" in a function will only cause errors in that function.</p>
​
<p>Activate debugging in your browser (F12) to see the error report.</p>
​
<script>
x = 3.14;    // This will not cause an error.
myFunction();
​
function myFunction() {
  "use strict";
  y = 3.14;  // This will cause an error (y is not defined).
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_strict_local by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:39:33 GMT -->
</html>
​
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