如何替换arguments.callee; 在JavaScript中

Question

This is my code

function add(x) {
    return function (y) {
        if (typeof y !== 'undefined') {
            x = x + y;
            return arguments.callee;
        } else {
            return x;
        }
    };
}
add(1)(2)(3)(4)();

Answer 1

As replace in - give it a name?:

function add(x) {
    return function my_func(y) {
        //          ^ Named function
        if (typeof y !== 'undefined') {
            x = x + y;
            return my_func;
        } else {
            return x;
        }
    };
}
add(1)(2)(3)(4)();

Also please read:

Please don't use arguments.callee : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/arguments/callee