15 lines
469 B
Markdown
15 lines
469 B
Markdown
The call `arr[2]()` is syntactically the good old `obj[method]()`, in the role of `obj` we have `arr`, and in the role of `method` we have `2`.
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So we have a call of the function `arr[2]` as an object method. Naturally, it receives `this` referencing the object `arr` and outputs the array:
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```js run
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let arr = ["a", "b"];
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arr.push(function() {
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alert( this );
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})
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arr[2](); // "a","b",function
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```
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The array has 3 values: initially it had two, plus the function.
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