string-prototypes.js

String.prototype.linkify = function(options) {
    var options = options || {};
    
    options.target = options.target || '_self';

    // http://, https://, ftp://
    var urlPattern = /\b(?:https?|ftp):\/\/[a-z0-9-+&@#\/%?=~_|!:,.;]*[a-z0-9-+&@#\/%=~_|]/gim;

    // www. sans http:// or https://
    var pseudoUrlPattern = /(^|[^\/])(www\.[\S]+(\b|$))/gim;

    // Email addresses
    var emailAddressPattern = /[\w.]+@[a-zA-Z_-]+?(?:\.[a-zA-Z]{2,6})+/gim;

    return this
        .replace(urlPattern, '<a target="'+options.target+'" href="$&">$&</a>')
        .replace(pseudoUrlPattern, '$1<a target="'+options.target+'" href="http://$2">$2</a>')
        .replace(emailAddressPattern, '<a target="'+options.target+'" href="mailto:$&">$&</a>');
};

String.prototype.toTileCase = function () {
    return this.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
};

String.prototype.isEmail = function () {
    var email=this;
    var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
    var check=/@[\w\-]+\./;
    var checkend=/\.[a-zA-Z]{2,3}$/;
    return !(((email.search(exclude) != -1) || (email.search(check)) == -1) || (email.search(checkend) == -1));
};

String.prototype.trim = function () {
    return this.replace(/^\s+|\s+$/g,"");
};

String.prototype.ucwords = function () {
    //   example 1: ucwords('kevin van  zonneveld');
    //   returns 1: 'Kevin Van  Zonneveld'
    //   example 2: ucwords('HELLO WORLD');
    //   returns 2: 'HELLO WORLD'

    var str = this;
    return this.replace(/^([a-z\u00E0-\u00FC])|\s+([a-z\u00E0-\u00FC])/g, function($1) {
                return $1.toUpperCase();
            });

};

String.prototype.createSlug = function () {
    var str = this;
    str = str.replace(/^\s+|\s+$/g, ''); // trim
    str = str.toLowerCase();
    
    // remove accents, swap ñ for n, etc
    var from = "àáäâèéëêìíïîòóöôùúüûñç·/_,:;";
    var to   = "aaaaeeeeiiiioooouuuunc------";
    for (var i=0, l=from.length ; i<l ; i++) {
    str = str.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i));
    }
    
    str = str.replace(/[^a-z0-9 -]/g, '') // remove invalid chars
    .replace(/\s+/g, '-') // collapse whitespace and replace by -
    .replace(/-+/g, '-'); // collapse dashes
    
    return str;

} ;

String.prototype.replaceAll = function(str1, str2, ignore){
	return this.replace(new RegExp(str1.replace(/([\/\,\!\\\^\$\{\}\[\]\(\)\.\*\+\?\|\<\>\-\&])/g,"\\$&"),(ignore?"gi":"g")),(typeof(str2)=="string")?str2.replace(/\$/g,"$$$$"):str2);
};