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<!DOCTYPE html>
<html>
<body>
​
<p>Click the button to do a case-insensitive search for "w3schools" in a string.</p>
​
<button onclick="myFunction()">Try it</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var str = "Visit W3Schools";
  var patt1 = /w3schools/i;
  var result = str.match(patt1);
  document.getElementById("demo").innerHTML = result;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_regexp_i by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 13:22:57 GMT -->
</html>
​
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