IndexOf cannot find my object. Here is the JsFiddle
let a = [{}]
console.log(a.indexOf({}))
Asked
Active
Viewed 43 times
0
TSR
- 12,583
- 19
- 64
- 146
-
6Because `{} !== {}`. Try `a.indexOf(a[0])`. – jonrsharpe Jul 05 '19 at 14:39
-
1Every distinct object is `!==` to every other object. – Pointy Jul 05 '19 at 14:39
-
When you compare objects it checks whether the two operands refer to the same object in memory. `indexOf` obviously use equality internally. `{} === {}` is `false` – Maheer Ali Jul 05 '19 at 14:40