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/*
substr() returns a part of a string. substr(2,6) return from the second character (start at 0) and 6 long.
substring() returns a part of a string. substring(2,6) returns all characters from the second character (start at 0) and up to, but not including, the sixth character.
*/
<html>
<body>
<script type="text/javascript">
var str="JavaScript is great!"
document.write(str.substr(2,6))
document.write("<br><br>")
document.write(str.substring(2,6))
</script>
</body>
</html>
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