如何在需要时将整个 object 转换为数组？

Question

Since long time am getting problem in this object to array and array to object. As i am working on external api - every codes are totally depend on the output from API

So here is my problem - Sometime am getting object (as there would be only single element in the result ) and sometime am getting a array with more than 2 or 3 items inside it, so when ever i perform some action like removing or manipulating or adding to single object am getting error on array and vise versa !

Whats the solution for this:(

Today i faced a problem:

Here is my object & Array:

//-------------Object--------------//
        "inventoryItems": {
            "age": "26",
            "gender": "MALE",
            "title": "Mr",
            "user" : "John"
        },

This is how i get from api when there is only one user presented,

//---------------Array-------------//

"inventoryItems": [
        {
            "age": "26",
            "gender": "MALE",
            "title": "Mr",
            "user" : "John"
         },
         {
            "age": "26",
            "gender": "MALE",
            "title": "Mr",
            "user" : "John"
         }
   ]

So, based on Array - i have created a map to miniplate the data but when it gets single object it throws error !

So, far:

I tried to add [] on object and it works - but when it comes to array it throws error as it will become nested array

Is there any industry practice for this problem? Am sure developers would have found a great solution for this already !

Answer 1

I think the best thing will be to make sure that your api provide an array in both cases so that when there is only on item your code will do the same action without crashing.

Though you can use a condition like this:

if (inventoryItems.length != undefined) {
  // This is an array
} else {
  // This is an object
}