Manipulate the `this` object using a newly created Array.prototype method

Question

I am trying to extend the Array object in Javascript exactly like this. I am trying to manipulate the values of the array (present in the this object) using the prototype like in the function.

function clear() {
    this = [];
}
Object.defineProperty(Array.prototype, 'clear', { value: clear, enumerable: true, });

It is giving me a error Uncaught SyntaxError: Invalid left-hand side in assignment

I am aware that the this is immutable. What is the workaround? I am not looking to create a new Object that emulates the Array constructor.

score 1 · Accepted Answer · answered Feb 06 '23 at 17:34

1

One option would be

this.splice(0, this.length)

I guess you can also do this.length=0 directly, but it feels kinda hacky.

answered Feb 06 '23 at 17:34

gog

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Manipulate the `this` object using a newly created Array.prototype method

1 Answers1