是否可以将参数传递给链接的匿名函数回调？

Question

I'd like to be able to pass parameters to an anonymous callback, is this possible? See below, thus far its not looking so.

var chain = {
    do: function(){
        console.log('blah');
        return this;
    },

    then: function(cb, param){
        cb.apply(param);
    }
}

chain.do().then(function(params){
    console.log(params); // undefined, expecting [1,2]
    console.log(arguments); // [], expecting [1,2]
}, [1,2]);

Answer 1

The first argument to apply() is the context, not the arguments.

Try...

cb.apply(this, param);

(or whatever you want this to be).