javascript mix-in pattern

Mix any number of objects and mix them all into a new object:

function mix() {

    var arg, prop, child = {};

    for (arg = 0; arg < arguments.length; arg += 1) {

        for (prop in arguments[arg]) {

            if (arguments[arg].hasOwnProperty(prop)) {

                child[prop] = arguments[arg][prop];

            }

        }

    }

    return child;

}



var cake = mix(

    {

        eggs: 2,

        large: true

    }, {

        butter: 1,

        salted: true

    }, {

        flour: "3 cups"

    }, {

        sugar: "sure!"

    }

);



console.dir(cake);

Return:

Object:

butter: 1

eggs: 2

flour: "3 cups"

large: true

salted: true

sugar: "sure!"