Replaces all occurrences of a string (x) within a string (this) with another string (y).

ReplaceAllInString.js

// Using func. https://gist.github.com/ryansmith94/5564105
func("replaceAll", function (x, y) {
    var self = this;

    while (self.indexOf(x) !== -1) {
        self = self.replace(x, y);
    }

    return self;
}, String.prototype);