如何从此json数据制作两个数组？

Question

My data is animalCount: {Tiger: 3, Leopard: 6, Rat: 1}

So I need to have 1st array

name :['Tiger', 'Leopard', 'Rat']

2nd array

count: [3, 6, 1]

Is it possible to obtain the same?

Answer 1

Sure, just use:

 const names = Object.keys(animalCount);
 const values = Object.values(animalCount);

Answer 2

As others have mentioned, you can use:

var name = Object.keys(animalCount);
var count = Object.values(animalCount);

If you, for some reason, needed to manipulate or change them while creating these arrays, you could also use a for i in animalCount loop, like so:

var animalCount = {Tiger: 3, Leopard: 6, Rat: 1};
        var array1 = [];
        var array2 = [];
        for(i in animalCount){
            if(animalCount.hasOwnProperty(i)){
                array1.push(i);
                array2.push(animalCount[i]);
            }
        }
        console.log(array1);
        console.log(array2);

Answer 3

How about

var name = [];
var count = [];
for(var prop in animalCount){
    name.push(prop);
    count.push(animalCount[prop]);
}

This way we're sure the order is preserved.

Answer 4

JS supports this natively.

var name = Object.keys(animalCount);
var count = Object.values(animalCount);

See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys for Object.keys and https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values for Object.values

Answer 5

You could take a single loop and reduce the entries of the object by iterating the key/value array for pushing the items.

 var animalCount = { Tiger: 3, Leopard: 6, Rat: 1 }, names = [], count = [], result = Object .entries(animalCount) .reduce((r, a) => (a.forEach((v, i) => r[i].push(v)), r), [names, count]); console.log(names); console.log(count); 

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