Javascript 对 object 值进行排序

Question

Hope you have been a good day. I want to ask you a question. Here is it:

So I have an object and I get values from it with Underscore.js (I will give you an example without using underscore.js to getting values).

After I get values, it puts numbers that are bigger than 0. I think it sorts bigger than smaller.

I want values exactly how they are at the object before I take them .

Here is an image for you

Here is the code

tmpReport.forEach(element => {
            const tmpVal = [];
            console.log("element: ", element);
            tmpValList.push(_.values(element));
            console.log('tmpValList: ', tmpValList);
        });

Here is the code without using underscore.js:

tmpReport.forEach(element => {
            const tmpVal = [];
            console.log("element: ", element);
            Object.entries(element).forEach(([key, value]) => {
                tmpVal.push(value);
            });
            tmpValList.push(tmpVal);
            console.log('tmpValList: ', tmpValList);
        });

So any help will be appreciated. Thank you!

Answer 1

In JavaScript, the order of object entries is not guaranteed. If you want to put specific entries at specific indices in your array you have to do that manually.

For example:

tmpVal[0] = element['Cell damage by placing'];
...
tmpVal[4] = element['time'];
tmpVal[5] = element['toplan'];

You can only achieve that if you are aware of your object keys. As far as I know there is now generic way to keep the initial order as there is no order to begin with.

The best you can do in that case is use a lexicographic order and sort your keys accordingly.