Creating a basic JSON array using the push method

Question

Creating a basic JSON array using the push method

When adding comments to a blog post using the line:

blogpost.comments.push({ username: "fred", comment: "Great"});

The JSON structure of the comments section will look like this:

"comments":[{"0":{"username":"jim","comment":"Good",},"1":{"username":"fred","comment":"great"}}]

To have a flatter JSON format without numerical additions, it should be structured as follows:

"comments":[{"username":"jim","comment":"Good"},{"username":"fred","comment":"great"}]

What changes are needed to achieve this desired JSON format?

javascript arrays json push

Answer 1

Answer №1

Could it be that blogpost.comments is not a JavaScript array, but something else entirely? If it were indeed an array, then executing the initial line of code wouldn't update the JSON object in the way you described. It should automatically add a new item to the end of the array.

For instance, if you have an array like this: blogpost.comments

[{"username":"jim","comment":"Good"}]

and you run:

blogpost.comments.push({ username: "fred", comment: "Great"});

You would logically expect blogpost.comments to now look like this:

[{"username":"jim","comment":"Good"}, { "username": "fred", "comment": "Great"}]

This leads me to suspect that blogpost.comments might not actually be an array after all. I recommend checking the code for blogpost.comments.push to see if there are any discrepancies.

In conclusion ... try converting it into an array, and it should behave as anticipated.

Answer 2

Could it be that blogpost.comments is not a JavaScript array, but something else entirely? If it were indeed an array, then executing the initial line of code wouldn't update the JSON object in the way you described. It should automatically add a new item to the end of the array.

For instance, if you have an array like this: blogpost.comments

[{"username":"jim","comment":"Good"}]

and you run:

blogpost.comments.push({ username: "fred", comment: "Great"});

You would logically expect blogpost.comments to now look like this:

[{"username":"jim","comment":"Good"}, { "username": "fred", "comment": "Great"}]

This leads me to suspect that blogpost.comments might not actually be an array after all. I recommend checking the code for blogpost.comments.push to see if there are any discrepancies.

In conclusion ... try converting it into an array, and it should behave as anticipated.

Creating a basic JSON array using the push method

Answer №1

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