在JavaScript中将对象值分配为数组

Question

How to assign the value to array in object value? It may has multiple input coming in and expected the input appended to array.

Code:

var ob = {};
$.each( input, function( key, value ) {
    var v = [];
    ob[key] = v.push(value);
      console.log( v );     
      console.log( "obj: " + ob );                          
      console.log( key + ": " + value );
    });

Input:

First input- {A: "34",B: "2"}
Second input- {A: "21",B: "11"}

Expected:

ob = {A: ["34","21"] ,B: ["2","11"]}

Answer 1

Create a function and an object variable. Check if the key exist in that object. If it does not exist they create the key and push the values

 let input1 = { A: "34", B: "2" } let input2 = { A: "21", B: "11" } // a object which will hold the key and value let finalObj = {}; // create a function which will be called o add key an value property to object function createObj(obj) { // iterate the object for (let keys in obj) { // check if final object has the relevent key if (finalObj.hasOwnProperty(keys)) { // if it has that key then push the value according to the key finalObj[keys].push(obj[keys]) } else { finalObj[keys] = [obj[keys]] } } } createObj(input1) createObj(input2) console.log(finalObj) 

Answer 2

Hope this helps,

var ob = {};

$.each(input, function(key, value) {
    if (!ob[key]) {
        ob[key] = [];  // Creates a new Array for the key, if no array is there
    }
    ob[key].push(value);  // Pushes the value to the array of the particular key
});

Answer 3

The problem is v empties on each iteration, because of this line:

var v = [];

Try doing this instead:

$.each(input, (key, val) => {
    if (ob[key]) {
        ob[key].push(val);
    } else {
        ob[key] = [val];
    }
});