Comparing Strings in JavaScript

本站添加: 2026-06-03

[00:00:00]Can you guess all three outputs?

[00:00:04]Comment your answer below, and the correct one is C. You should know that.

[00:00:08]JavaScript doesn't compare letters the way we do. It compares their character codes under the hood. Char code of uppercase A is 65, and uppercase Z is 90. It gives false. Then, the lowercase A is 97. So, this line returns true.

[00:00:20]Third line, is 4 greater than 5? This one looks simple, but remember, these are strings, not numbers. JavaScript again compares the character codes of 4 and 5, which are 52 and 53. So, string 4 is less than string 5, and the answer is false. So, the rule is simple.

[00:00:35]JavaScript compares strings by their character codes, not by what they look like to us. If you want to master JavaScript concepts like this easily, my ebook is linked in bio.