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Question about % function
I have gotten some great expressions here from people for looping expressions by essentially replacing all “time” inputs with “t” where “t=time%1”. This makes the expression essentially “restart” ever 1 second or for “time%2” every 2 seconds.
It always works perfectly well, but for conceptual purposes I would like to know what exactly the % function in javascript does to make this happen. I cannot find it on any websites about Javascript or After Effects Expressions. Is this specific to “time” or can it do similar things to other variables.
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1 Reply
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% represents the remainder operator.
You can use it for any pair of numbers : x%y (y not 0 though).
If both x and y are positive, it is same as x modulo y, or x-Math.floor(x/y)*y.
If x or y is negative, it behaves a bit strangely.See for instance https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Remainder_()
Xavier
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