javascript - 从javascript中的数组中删除对象

Question

我正在尝试使用其 art_id 从购物车中删除一个对象，但是当我收到此错误时 SyntaxError: Delete of an unqualified identifier in strict mode. 为什么会发生这种情况以及如何发生我可以修改我的代码来克服这个错误吗

 function remove_from_cart(req, res, next) {
        console.log(req.session);
        var art_id = req.params._id;

        var art_to_remove = _.findWhere(req.session.cart, {
            art_id: art_id
        });

        console.log(art_to_remove);
        delete art_to_remove;
        console.log(req.session);
        res.send('deleted')
    }

Answer 1

因为你似乎在使用underscore，你可以使用_.reject() :

req.session.cart = _.reject(req.session.cart, { art_id: art_id });