Please Tell me what is wrong in my if statement condition

Question

I made a if condition in which function performs when x==canvas.width/2 but it doesnt perform.Please Tell me what is wrong in my if statement condition
(when I put condition x==canvas.width only then it performs correctly)
https://code.sololearn.com/WBzR7Jaj5xPh/?ref=app

Answer 1

then what to use

Answer 2

var

Answer 3

why are you using /2

Answer 4

check for precedence.. and you will get your answer