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JavaScript

Posted by Jason Frye
Jason Frye
8,235 Points

Program Code Order

In one of the beginning JavaScript videos, I thought I heard the program would execute the lines of code from top to bottom. In this code, I had a small error in the third line that kept even the first prompt from showing.

var HTMLBadges = prompt("How many HTML badges do you have?"); var CSSBadges = prompt("How many CSS badges do you have?"); var totalBadges = HTMLBadges + CSSBadges; alert("Wow! You have " + totalBadges + " badges!");

If the error was in the third line and the program runs the code from top to bottom, why wouldn't the first two prompts show but not complete or error out anything on the third line and after?

Thanks for helping me to better understand JavaScript!

1 Answer

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 49,047 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 49,047 Points

The code is compiled before it is run; if there is an error anywhere in the code, it will cause the program to fail.