Three implementation methods of javascript intercepting the specified string from the right_javascript skills

Intercept the fg on the right side of abcdefg

Method 1

<script> <br>string="abcdefg" <br>alert(string.substring(string.length-2,string.length)) <br></script>

Method 2

<script> <br>alert("abcdefg".match(/.*(.{2})/)[1]) <br></script>

<script> <br>alert("abcdefg".match(/.{2}$/)) <br></script>

Method 3

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