题解 | #Function.bind#

Function.prototype._bind = function(thisArg, ...otherArgs) {
                thisArg = thisArg === null || thisArg === undefined ? window : Object(thisArg)
                thisArg.fn = this
                return (...newArgs) => {
                    const allArgs = [...otherArgs, ...newArgs]
                    return thisArg.fn(...allArgs)
                }
            }