怎么樣把a(bǔ).JS里的函數(shù)封裝到另一個(gè)新的b.JS,以后html調(diào)用時(shí)可以直接調(diào)用b.js里的接口，然后再由b.js調(diào)用a.js的函數(shù)來(lái)實(shí)現(xiàn)(function(){          window.Hilock = function(obj){            this.height = obj.height;                     this.width = obj.width;                      this.chooseType = Number(window.localStorage.getItem('chooseType')) || obj.chooseType;         };         Hilock.prototype.draw = function(x, y) {              //實(shí)現(xiàn)代碼         }     })();