Adding data to a Javascript array of arrays

Question

I'm trying to add data to an array, and getting a weird result.

var arr = [];
var obj1 = { data: ["a","b"]};
var obj2 = { data: ["c","d"]};
arr.push(obj1);
arr[0].data.push(obj2.data);
console.log(arr[0].data);
// 1) what i want: [ ["a", "b"], ["c", "d"] ]
// 2) what i get: ["a", "b", ["c", "d"] ]

Any idea how can I set it up so that I get the data formatted like: [["a","b"],["c","d"]]? Here's a fiddle for it: http://jsfiddle.net/oakley808/UCQ65/

• James Montagne: Why are you creating objects if you only want arrays?
• Iskar Jarak: ^^What he said. Also, that's not a 'weird' result at all - you're inserting an array as an element into another array.
• Michael Oakley: This is a simplified example. The objects actually are more complex.
• Iskar Jarak: Yes, but you don't need the objects to demonstrate what you are trying to do with the arrays.
• Michael Oakley: You're right. Let me try and clarify. What I actually need to do is add object1 to the array, then essentially merge object2 into object1. The data arrays within the objects are x,y coordinates, which is why i need them paired up.

Answer 1

Try this:

var arr = [];
var obj1 = { data: ["a","b"]};
var obj2 = { data: ["c","d"]};
arr.push(obj1.data);
arr.push(obj2.data);
console.log(arr);

enter image description here

• Bruno Croys Felthes: @emrenevayeshirazi take a look at the picture, i have a array with 2 other arrays with 2 elements
• Michael Oakley: You're right @BrunoCroysFelthes . But sadly the array 'arr' needs to contain objects. arr[{data[[x1,y1],[x2,y2]]},...{},...{data[[x8,y8],[x9,y9]]}]. I think I oversimplified too much in my original post.
• Bruno Croys Felthes: @MichaelOakley Do a better feddle, or post your original variable structure, then we can help you better.