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vyspiansky/javascript-trim-function.js

Created March 26, 2014 09:17
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JavaScript: trim function
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javascript-trim-function.js
function trim(str) {
var res = str.replace(/^\s+/, '');
return res.replace(/\s+$/, '');
}
@vyspiansky
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Remove spaces from a string

if ('undefined' == typeof String.prototype.ltrim) {
    String.prototype.ltrim = function() {
        return this.replace(/^\s+/, '');
    }
}

if ('undefined' == typeof String.prototype.rtrim) {
    String.prototype.rtrim = function() {
        return this.replace(/\s+$/, '');
    }
}

if ('undefined' == typeof String.prototype.trim) {
    String.prototype.trim = function() {
        return this.replace(/^\s+/, '').replace(/\s+$/, '');
    }
}

// Usage:
var str = ' \n\t\r test \n\t\r ';
console.log('[' + str.ltrim() + ']');
console.log('[' + str.rtrim() + ']');
console.log('[' + str.trim() + ']');

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