© 2024 borui. All rights reserved.
This content may be freely reproduced, displayed, modified, or distributed with proper attribution to borui and a link to the article:
borui(2024-04-02 22:50:26 +0000). how to properly check if an object is array in javascript. https://borui/blog/2024-04-02-en-how-to-properly-check-whether-is-array.
@misc{
borui2024,
author = {borui},
title = {how to properly check if an object is array in javascript},
year = {2024},
publisher = {borui's blog},
journal = {borui's blog},
url={https://borui/blog/2024-04-02-en-how-to-properly-check-whether-is-array}
}proper way
The Array.isArray() static method determines whether the passed value is an Array.
- Array.isArray(). (n.d.). MDN docs. Retrieved April 02, 2024, from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
why the question since it is so easy
Because I have tried something dangerous by checking whether something is iteratable instead, as this would recurr unexpected results, since strings are also iteratable.
- Tomas Kulich. (Sep 12, 2015). The proper way to check for iterability is as follows: ... Why this works (iterable protocol in depth): https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Iteration_protocols Since we are talking about for..of, I assume, we are in ES6 mindset. Also, don't be surprised that this function returns true if obj is a string, as strings iterate over their characters.. [Answer]. stackoverflow. https://stackoverflow.com/questions/18884249/checking-whether-something-is-iterable/32538867