var arr = [];
arr['k1'] = 100;
console.log(arr); //o/p - [k1: 100]
arr.length; //o/p - 0
window.copy(arr); //copies: []
I want to convert this array-like object to a proper obj i.e,
arr = { k1: 100}
So doing window.copy(arr) should copy {k1:100}
NOTE- I need to do this as Node.js express server returns empty arrays in response for such cases.
You can use object spread syntax to copy all own enumerable properties from the original object to a new object:
const arr = [];
arr['k1'] = 100;
const obj = { ...arr };
console.log(obj);This works even if arr is originally an array, rather than a plain object, because the k1 property exists directly on the array.
(But ideally, one should never have code that assigns to arbitrary properties of an array - better to refactor it to use an object in such a situation to begin with)
var array = []
array["k1"] = 100;
var newObject = Object.assign({},array);
console.log(newObject);
arr['k1'] = 100doesn't do what you think it does. It doesn't create an index calledk1with a value of100. It creates an entirely new property on this instance of an Array calledk1and sets the value to100. If you were to loop over the array indexes, you'd never seek1show up and it is why the.lengthis0.