Javascript 原型编程初探

 var PlayTrace = function (interVal,name) {
        this.interVal = interVal;
        this.playName = name;
    };

    PlayTrace.prototype = function () {
        startPlay = function (beginVal) {
            if (this.playInterVal) {
                clearInterval(this.playInterVal);
            }
            this.playInterVal = window.setInterval(function (name) {
                console.log(name + "," + beginVal);
                beginVal++;
            }, this.interVal, this.playName);

        }

        return {
            startPlay: startPlay
        }
    }();

    var play1 = new PlayTrace(1000, "play1");
    play1.startPlay(1);


    var play2 = new PlayTrace(2000,"play2");
    play2.startPlay(100);