从构造函数中获取对象的所有javascript函数，但不是使用“ this”分配的函数？

Question

I need to get all function names inside the constructor, excluding those functions assigned with this :

var MyObject = function (arg1, arg2) {
    this.arg1 = arg1;
    this.arg2 = arg2;

    // Get all functions, i.e. 'foo', excluding 'arg1' and 'arg2'
};

MyObject.prototype.foo = function() {}

I have used Underscore.js, without luck. Assuming that the actual parameters are both functions:

var MyObject = function (arg1, arg2) {
    this.arg1 = arg1;
    this.arg2 = arg2;

    // Array of object function names, that is 'foo', 'arg1' and 'arg2'
    var functions = _.functions(this);

     // Loop over function names
    _.each(functions, function (name) {}, this) {
        // Function arguments contain this.name? Strict check ===
        if(_.contains(arguments, this.name) {
            functions = _.without(functions, name); // Remove this function
        }
    }
};

MyObject.prototype.foo = function() {}

Answer 1

您需要原型定义的所有功能：

_.functions(MyObject.prototype);

Answer 2

The functions on this are those you have assigned inside the constructor plus those inherited from the prototype. So what you need to do is query the prototype for its functions:

var funcs = _functions(Object.getPrototypeOf(this));

The above works in all reasonably modern browsers. For early IE you could fall back to the non-standard

var funcs = _functions(this.__proto__);