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Add note about function call args limit for using spread syntax to concatenate arrays #43838

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Add note about function call args limit for using spread syntax to concatenate arrays #43838

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Update Array.push to note limitation of spread syntax based on functo…
solsword Apr 17, 2026
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Merge pull request #1 from solsword/solsword-push-spread-limitations
solsword Apr 17, 2026
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4 changes: 3 additions & 1 deletion files/en-us/web/javascript/reference/global_objects/array/push/index.md
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Expand Up @@ -85,7 +85,9 @@ vegetables.push(...moreVegs);
console.log(vegetables); // ['parsnip', 'potato', 'celery', 'beetroot']
```

Merging two arrays can also be done with the {{jsxref("Array/concat", "concat()")}} method.
Merging two arrays can also be done with the {{jsxref("Array/concat", "concat()")}} method, which will make a new combined array instead of adding to the original.

Note: using spread syntax will only work if the number of elements in the array is less than the maximum number of function parameters. Use {{jsxref("Array/concat", "concat()")}} if you're not sure that the array you're trying to merge will be short enough.

### Calling push() on non-array objects

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