How does % sign work in javascript -

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how % sign work in javascript. following code gives output 0/1.

for(var i= 0; i<10;i++){     console.log(isodd(i))  }  function isodd(num) { return num % 2;}

a%b

its modulo operator. trys put biggest multiple of b a, returns rest of it:

2%3 /*3 fits 0 times, remainder */ 2 6%5 /* 5 fits once, remainder */ 1 16%5 /* 5 fits 3 times, remainder */ 1

its useful endless arrays, if go on max index, start again @ 0, can written this:

i++; if(i>=array.length) i=0;

can shortened to:

i=(i+1)%array.length;

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