请参考 http://www.cnblogs.com/xljzlw/p/3775162.htmlcall applyvar mtt = { name: "mtt", sayHello: function (age) { console.log("hello, i am ", this.name + " " + age " years old"); } }; var xjs = { name: "xjs ",}; mtt.sayHello(24);// hello, i am zlw 24 years old apply参数需要是数组形式,而call参数需要用逗号隔开24,25
mtt .sayHello.call(xjs , 24);// hello, i am xjs 24 years oldmtt .sayHello.apply(xjs , [24]);// hello, i am xjs 24 years old bind方法传递给调用函数的参数可以逐个列出,也可以写在数组中。bind方法与call、apply最大的不同就是前者返回一个绑定上下文的函数
mtt .sayHello.bind(xjs)(24); //hello, i am xlj 24 years old mtt .sayHello.bind(xjs)([24]); //hello, i am xlj 24 years old bind
var bind = Function.prototype.call.bind(Function.prototype.bind); var zlw = { name: "zlw" }; function hello () { console.log("hello, I am ", this.name); } bind(hello, zlw)() // hello, I am zlw
时间: 2024-08-03 15:36:54