这篇文章主要介绍了使用 js 简单的实现 bind、call 、aplly代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
Function.prototype._call = function(obj,...arg){
var me = this;
var k = Symbol("test"); //生成唯一的 key
obj[k] = me;
var result = obj[k](...arg);
delete obj[k];
return result;
}
Function.prototype._apply = function(obj,arg){
var me = this;
var k = Symbol("test"); //生成唯一的 key
obj[k] = me;
var result = obj[k](...arg);
delete obj[k];
return result;
}
Function.prototype._bind = function(obj,...arg){
var me = this;
return function(...args){
var param = [...arg,...args];
return me._apply(obj,param);
}
}
var o1 = {
info:"o1",
print(){
console.log(arguments)
console.log(this.info)
}
}
var o2 = {
info:"o2",
print(){
console.log(arguments)
console.log(this.info)
}
}
var o3 = {
info:"o3",
print(){
console.log(arguments)
console.log(this.info)
}
}
o1.print._bind(o3,11)(44,66);
