Question

我想在JS中创建一个函数，其中包含函数，并在该函数中创建另一个函数或变量。例如，对于汽车，我想这样称呼：

var car1 = new car("blue");
var curPosX = car1.position.x;
var curPosY = car1.position.y;

var car2 = new car("red");
car2.motor.start();
car2.motor.moveTo(curPosX, curPosY);
car2.color = "red";
car2.window[0].open();

的cource没有代码使汽车移动所以，但只是一个例子我怎么能做到这一点，所以我可以用

来调用它

function.functionInside.anotherFunction();

提前致谢！

Answer 1

我建议您查看课程，然后您可以在主要对象中包含对象，您可以在其中调用您的函数。 ie）存储在汽车对象内部的电机对象。

编辑：

以下是您正在考虑的最简单的示例。

var car = {
    motor: {
        start: function () { return "started motor";}
    }
};

alert(car.motor.start());

Answer 2

以下是我如何设置它：

ERROR | [iOS] unknown: Encountered an unknown error (An unexpected version directory `Private pod subdirectory` was encountered for the `/Users/username/.cocoapods/repos/test/test` Pod in the `test` repository.) during validation.

输出：

var motor = function() {
  this.posX = 0;
  this.posY = 0;
};

motor.prototype.start = function() {
  console.log("motor started!");
};

motor.prototype.moveTo = function(x, y) {
  this.posX = x;
  this.posY = y;
  console.log("motor moved to (" + x + ", " + y + ")");
};

var windowC = function() {
  this.state = false; //closed
};

windowC.prototype.open = function() {
  this.state = true;
  console.log("window opened");
};

var car = function(color) {
  this.color = color;
  this.position = {
    x: 0,
    y: 0
  };
  this.motor = new motor();
  this.window = [new windowC(), new windowC(), new windowC(), new windowC()];
};

var car1 = new car("blue");
var curPosX = car1.position.x;
var curPosY = car1.position.y;

var car2 = new car("red");
car2.motor.start();
car2.motor.moveTo(curPosX, curPosY);
car2.color = "red";
car2.window[0].open();

Here's好读。 ECMA 6支持类，因此将来会更容易。

JS：如何制作嵌套函数？

2 个答案: