数组不是作为新索引推送，而是作为新数组推送

Question

My object contains the following format:

[
    { },
    { }
]

But the way my code is written, it adds it in as,

[
    [
        { }
    ],
    [
        { }
    ]
]

Not sure what's going on, here is my code:

var commentArray = [];

commentArray.push({
    'text': comment,
    'user': vm.user
});

reference.reference.comments.push(commentArray);

Something like this works:

reference.reference.comments.push({
    'text': comment,
    'user': vm.user
});

But I want to push commentArray ?

Answer 1

Let's see if I can make it clear to you:

var commentArray = []; 
// here you are creating an empty array called commentArray 

commentArray.push({
    'text': comment,
    'user': vm.user
}); 
// Here you define an object, with 2 properties (text and user) 
// and push it to commentArray you created so 
// commentArray = [{'text': comment, 'user': vm.user}];

reference.reference.comments.push(commentArray);
/// here you push an array (commentArray) into another array (comments)
// so reference.reference.comments will be [[{'text': comment, 'user': vm.user}]];

I'll do a working example in a moment.

 var comments = []; var commentArray = []; commentArray.push({ 'text': 'comment', 'user': 'someuser' }); console.log('comments:', comments); console.log('commentArray:', commentArray); comments.push(commentArray); console.log('comments:', comments); console.log('commentArray:', commentArray);

So you shouldn't create an intermediary array. You should create only the object. Like this:

var comment = {
    'text': comment,
    'user': vm.user
};

reference.reference.comments.push(comment);

or more directly like this:

reference.reference.comments.push({
    'text': comment,
    'user': vm.user
});

Answer 2

Try this, you want to push a single comment into your comments array, not an array into an array.

var comment = {
    'text': comment,
    'user': vm.user
};

reference.reference.comments.push(comment);