JavaScript, escape a string

escaper.js

/**
 * Use the browsers native capability to escape strings
 */
'use strict';
define(function() {
    // Use the browser's built-in functionality to quickly and safely escape the
    // string
    return function(str) {
        var div = document.createElement('div');
        div.appendChild(document.createTextNode(str));
        return div.innerHTML;
    };
});