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Result Size: 625 x 571
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<!DOCTYPE html>
<html>
<body>
<h2>JavaScript String Methods</h2>
<p>Both indexOf(), and lastIndexOf() return -1 if the text is not found:</p>
<p id="demo"></p>
<script>
var str = "Please locate where 'locate' occurs!";
var pos = str.indexOf("John");
document.getElementById("demo").innerHTML = pos;
</script>
</body>
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_string_indexof_1 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:39:29 GMT -->
</html>
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