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Javascript Trim

In programming, trim is a string manipulation function or algorithm. The most popular variants of the trim function strip only the beginning or end of the string. Typically named ltrim and rtrim respectively. 

Javascript trim implementation removes all leading and trailing occurrences of a set of characters specified. If no characters are specified it will trim whitespace characters from the beginning or end or both of the string.

More code snippets you can find on free code and tutorials website.

* Javascript trim, ltrim, rtrim
* http://www.webtoolkit.info/

function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");

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