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JavaScript Introducing the Practice

Posted by Devis Mejia
Devis Mejia
1,956 Points

Where to use methods, objects, functions to convert variables

Hi! I'm looking for clarification on when to convert a variable. I've seen it done 2 different ways:

  1. When declaring the variable. Ex: name = prompt("What's your name?").toUpperCase();

  2. In a conditional statement. Ex: if (name.toUppercase() === 'Jane') ....

Does it matter where it's converted?

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

If the converted value is only used one time, where it is done is most likely just a matter of programmer preference.

But if it is used multiple times, it is more efficient to convert and store it just once, before the first time it is used.