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declare Object with the same key names

Is there a way to declare a Object with the same key names in js ?

let Obj = {
   '1' : '1',
   '1' : '1',
   '1' : '1',
}

8 months ago · Juan Pablo Isaza

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Accepted Answer · 2022-06-24T18:49:25.733Z

No. The names of the properties in an object must be unique, not least so you can identify the property you want to get/set. Although the code you wrote will parse and run, the resulting object will have only one property (the last one using that name):

let obj = {
    1: "first",
    1: "second",
    1: "third",
};
console.log(obj[1]);; // "third"

You could use an array of objects if the key name must be the same:

let array = [
    {1: 1},
    {1: 1},
    {1: 1},
];

...or, really, just an array (let array = [1, 1, 1];) as the key name isn't doing anything useful if it's always the same.