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var arr = new Array() //[] 这些个是系统自带的对象,就叫系统对象 var date = new Date() //自定义对象 var tab = new Tab()
封装函数
function createPerson(name){ var obj = new Object() obj.name = name obj.showName = function(){ alert(this.name) } return obj } createPerson('小明').showName() createPerson('小强').showName()