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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 2 Solution

tzehuilee
tzehuilee
19,911 Points
Posted by tzehuilee
tzehuilee
19,911 Points

Why is there no "var" declaration for the html variable? Missing end semicolon.

I noticed in the video of all the variables declared, the variable html is the only one never declare with var. How come? Also at the snippet of the code: html = "You got " + correctAnswers + " question(s) right." There is no semicolon after that part of the code. What's interesting it still run not only on workspace but also on my Netbeans IDE.

2 Answers

Robert Manolis
STAFF
Robert Manolis
Treehouse Guest Teacher
Robert Manolis
Robert Manolis
Treehouse Guest Teacher

var and semicolon are best practices, but often a JS file will run without them. Still always better to use "var" and "semi-colons" when you should. In some cases it can probably make your program run more smoothly, plus it can make the code more readable.

Samy Basset
Samy Basset
11,862 Points
Samy Basset
Samy Basset
11,862 Points

With var you can also declare the scope. you can see declared variables with var as a local scope, and declared variables without var as a global scope. All though it is recommended to always use the var statement.