Question

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How do I trim a string in javascript?

By using replace method in javascript I am trying to remove the empty space between the start and the end of a string:

Here my code:

Any idea how should I achive the result?

input  -> "   first second     ".replace(/[^\s|\s$]/g, ''); // " "
output -> "first second"

Answer 1

This is called trimming.

You need parentheses instead of brackets in the regular expression, and also a multiplier on the white space specifier to match multiple spaces:

var s = "   first second     ".replace(/(^\s+|\s+$)/g, '');

Demo: http://jsfiddle.net/Guffa/N7xxt/