如何在另一个对象内分配对象

Question

Below is the function that does some stuff.

ns.Line2Point = function (params) {
        points = params.points;
        // code here
};

In the code above, params object contains a points object . So, when I want to call Line2Point method, I must create a object, and it contain points object. But, I don't know how to in Javascript. I just have some ideas like the code below, but don't know it true or false:

    var params;
    var points;
    // some code to initialize for points object
    params.points = points
    ns.Line2Point(params)

Please teach me this. Thanks :)

Answer 1

as you said you just need to initialize params.

var params = {};   // initialize to an object literal
params.points = {}; // points is now an object literal, too

if you already have points , initialize params , then do

params.points = points; // assign points to the points property of params

Answer 2

I don't really understand your question, but I think this is what you're looking for:

points = [
    {
        x: 10,
        y: 25
    },
    {
        x: 20,
        y: 35
    }
]

Points is an array now, that consists of 2 objects, that consist of 2 variables each: x and y .

Answer 3

Declare params as object first.

var params = {};