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00:00:00 intro 00:00:28 .charAt() 00:01:34 .indexOf() 00:02:03 .lastIndexOf() 00:02:15 .length 00:02:40 .trim() 00:03:13 . [Using Regular expression] A simple program to read a [Using Regular Expression] A simple program to read a [Using Regular Expression] A simple program to read an email and validate against the format A(A/9/_)...(A/9/_)..A.com where ... [Using Regular Expression + search()] A simple program to read a
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Last Updated: June 7, 2026
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Learn Javascript: Working with String Object - First/Last characters
Learn Javascript: Working with String Object - Same First/Last characters
JavaScript Strings
Learn Javascript: Working with String Object - 1 a : replace()
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