I understand random numbers and adding numbers, but I don't understand how to add a random number to a number currently displayed. I have a jsFiddle here that shows what I have now, but I want that button to add another random number with each click to the current number displayed.
EDIT: I should clarify that my jsFiddle is clunky and I would like a more efficient solution for my question.
When setting the randomnumber div you can use
$("#randomnumber").text(($("#randomnumber").text() * 1) + numRand);
where $("#randomnumber").text() * 1 will be 0 when blank or the latest total
parseInt() (with the radix) or parseFloat() (just to be sure).
Keep the Sum value in a global variable. Add to that everytime when you generate the new random number.
Jsfiddle sample : http://jsfiddle.net/CsHyW/4/
Why such a convoluted example? If I understand correctly this should work:
var max = 13;
var $wrap = $('#randomnumber');
$('#getit').click(function() {
var num = +$wrap.text();
$wrap.text(num + Math.ceil(Math.random() * max));
});
If I understood your question correctly you want to either store all the numbers generated or to add their value into an accumulated variable. Here's a fiddle with both and it will alert the array of numbers as well as the accumulated result.
