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Best way to Swapping in JavaScript

Mohammed Awad on June 11, 2023

Have you ever needed to swap the values of two variables in JavaScript? While it may seem simple at first, directly swapping the values (head = ta...
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Julio Fagundes • • Edited

Simple and clearly solution for beginners! Nice done Muhmmad.

// If you want to go deep, destructuring assignment is also a good way
[head, tail] = [tail, head]
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Mohammed Awad • • Edited

thanks, ChatGPT told me that wrong with primitive type like number. and [a, b] = [b, a] will not work and it's use jsut for swaping array elemnts . but now you and other told me that. I checked by self and saw that ChatGPT wrong . wow

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Jon Randy 🎖️ • • Edited 
[a, b] = [b, a]
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No temporary variable needed.

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Mohammed Awad •

thanks, ChatGPT told me that wrong with primitive type like number. and [a, b] = [b, a] will not work and it's use jsut for swaping array elemnts . but now you and other told me that. I checked by self and saw that ChatGPT wrong . wow

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Jon Randy 🎖️ •

ChatGPT is frequently wrong. I'd trust it as far as I could throw it - with programming, and almost anything TBH

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codingjlu •

You should never do this in real life, but these are great for confusing your colleagues (only works on integers).

👍

x += y
y = x - y
x -= y
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😎

x *= y
y = x / y
x /= y
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🤯

x ^= y
y ^= x
x ^= y
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Ashish Khare😎 •

Now here is the real treasure 😉
Great one.

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codingjlu •

I agree; the only benefit there is saving the memory for 8 bytes or the like. Speed wise it's found lacking.

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Panayiotis Georgiou •

very good 😀

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Mohammed Awad •

glad to hear that

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Ashish Khare😎 •

The comment section is on fire 🔥.

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Mohammed Awad •

🔥🔥🔥

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Visakh Vijayan •

Like the effort

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Mohammed Awad •

thank you

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Mohammed Awad •

sometimes It's simplified hard lectures. If I didn't understand something I ask his to expalin it for me . but from now on I will careful with every answer I get from him

 
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Mohammed Awad •

You are 100% right

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Mohammed Awad •

Do you like the article or just swap? :)