旧的IE中的JavaScript Object.create [英] JavaScript Object.create in old IE

问题描述

有没有办法让这个代码向后兼容IE6 / 7/8？

Is there a way to make this code backwards compatible with IE6/7/8?

function Foo() {
    ...
}

function Bar() {
    ...
}

Bar.prototype = Object.create(Foo.prototype);

主要问题是 Object.create 错误，然后崩溃浏览器。

The main problem is Object.create errors, then crashes the browser.

所以我可以插入一个函数来模拟 Object.create 对于旧IE。或者我应该如何重新编写上面的代码来解决它？

So is there a function I can drop in to emulate the behavior of Object.create for old IE. Or how should I re-code the above to work around it?

推荐答案

Pointy的评论作为答案

Pointy's comment as an answer

https： //developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/create#Polyfill

if (!Object.create) {
    Object.create = function (o) {
        if (arguments.length > 1) {
            throw new Error('Object.create implementation only accepts the first parameter.');
        }
        function F() {}
        F.prototype = o;
        return new F();
    };
}

此polyfill涵盖了创建一个新对象的主要用例，已经选择了原型，但没有考虑第二个参数。

This polyfill covers the main use case which is creating a new object for which the prototype has been chosen but doesn't take the second argument into account.

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