let a = [1,2,3,4];
a['name']='Tony';
Why is it not showing an error? As it's an array and arrays don't have indexing of strings. And still the length of the array is 4.
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2arrays are object. any not index like key is not shown, but exists. – Nina Scholz Jan 31 '20 at 08:48
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Welcome to the world of javascript. – Hao Wu Jan 31 '20 at 08:49
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see the difference between array and typed arrays. – Deadpool Jan 31 '20 at 09:15
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@NinaScholz is correct. `typeof [1,2,3] === "object"; // true`. Arrays are also a form of objects, with extra behavior. The organization of contents in arrays is slightly more structured than for general objects. You can learn more about Javascript array on [Array MDN Page](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) – kushdilip Jan 31 '20 at 09:15