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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Regular Expression</h1>
<h2>Using [ ] to find a range of characters</h2>
<p>A global search for the character "h":</p>
<p id="demo"></p>
<script>
let text = "Is this all there is?";
let pattern = /[h]/g;
let result = text.match(pattern);
document.getElementById("demo").innerHTML = result;
</script>
</body>
</html>