javascript - See if a number is equal to 1 or every 5th number -

i want check if number equal 1 or every 5th number after that. eg. 1,6,11,16,21,... want set value. like

if (checkforoneorfifth(rownumber)){ $("#x"+rownumber+"_location").val('mytext'); $("#x"+rownumber+1+"_location").val('mytext'); $("#x"+rownumber+2+"_location").val('mytext'); $("#x"+rownumber+3+"_location").val('mytext'); $("#x"+rownumber+4+"_location").val('mytext'); } var checkforoneorfifth = function(number) { if(something here){ return true; }else{ return false; } }; 

thanks scott

you can use mod operator check you:

var checkforoneorffith = function(number){   return (number - 1) % 5 == 0; }