This content originally appeared on DEV Community and was authored by Mykyta Yarmak
var a={},
b={key:'b'};
a[b]=123;
In this case, b as key is "[object Object]" - result of b.toString()
Therefore, every keys are same as "[object Object]" whenever Object passed into Array Key
In this case, we can solve this problem using ECMAScript 6 Maps
var a = new Map(),
b = {key: 'b'};
a.set(b, 123);
This content originally appeared on DEV Community and was authored by Mykyta Yarmak
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Mykyta Yarmak | Sciencx (2022-04-19T11:56:49+00:00) JavaScript Array Key as Object Type. Retrieved from https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/
" » JavaScript Array Key as Object Type." Mykyta Yarmak | Sciencx - Tuesday April 19, 2022, https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/
HARVARDMykyta Yarmak | Sciencx Tuesday April 19, 2022 » JavaScript Array Key as Object Type., viewed ,<https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/>
VANCOUVERMykyta Yarmak | Sciencx - » JavaScript Array Key as Object Type. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/
CHICAGO" » JavaScript Array Key as Object Type." Mykyta Yarmak | Sciencx - Accessed . https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/
IEEE" » JavaScript Array Key as Object Type." Mykyta Yarmak | Sciencx [Online]. Available: https://www.scien.cx/2022/04/19/javascript-array-key-as-object-type/. [Accessed: ]
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