javascript - Adding more than one to a variable on click -

so add +1 variable use code varname++; if want increament value of say, 4 on click how should code look?

this exampel code:

var varname = 1;   $('.button').click(function{    varname++; }); 

also, code revert this? i.e decrease variable specific value.

you're looking += , -=:

$('.button').click(function{     varname += 4; // increment 4     // varname -= 4; decrement 4 }); 

i'd suggest familirise javascript operators.