There is a big difference between postfix and prefix versions of ++. In the prefix version (i.e., ++i), the value of i is incremented, and the value of the expression is the new value of i. In the postfix version (i.e., i++), the value of i is incremented, but the value of the expression is … Read more
! inverts a value, and gives you the opposite boolean: !true == false !false == true !1 == false !0 == true –[value] subtracts one (1) from a number, and then returns that number to be worked with: var a = 1, b = 2; –a == 0 –b == 1 So, !–pending subtracts one … Read more
My view is to always use ++ and — by themselves on a single line, as in: i++; array[i] = foo; instead of array[++i] = foo; Anything beyond that can be confusing to some programmers and is just not worth it in my view. For loops are an exception, as the use of the increment … Read more