Question:
In what scenarios should one use if..else statements and in what scenarios should one switch statements in JavaScript?
Any help will be appreciated.
Happy Coding
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Dumebi Okolo -
Nik L. -
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Top comments (1)
By it's nature switch only compares the value of a single variable.
Generally a switch works best when comparing the value/state of a single variable against a known set of possibilities. Think of incoming keystroke and you want to act differently depending on what key is pressed. A switch here makes much more sense than multiple if/else.
If you are comparing different variables - rather than one single, maybe also using functions as conditions, a switch statement would not be appropriate at all - if even possible.
Sample pseudo code for a login to validate username and password.
I generally consider a lot of trailing
if else
as bad practice and try to solve things with a different approach, depending on situation. I think it is pain to maintain, can be hard to follow and bug prone. A switch statement however are usually pretty straight forward, just avoid magic numbers/strings and use constants, enums or similar instead.Happy coding!