call的代码实现写的有漏洞,应该改为如下代码

[shenqistart]

call的代码实现写的有漏洞,应该改为如下代码
function fn1() {
console.log(this, 1);
}
Function.prototype.myCall = function (context = window, ...args) {
if (this === Function.prototype) {
return undefined; // 用于防止 Function.prototype.myCall() 直接调用
}
context = Object(context);
const fn = Symbol();
context[fn] = this;
const result = contextfn;
delete context[fn];
return result;
}
fn1.myCall('hello')