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How do I count the number of times a button is being clicked. NOTE: everytime the button is clicked it causes the form to postback.I was going to use a hidden text box.. function increment(){ document.getElementByID("count").value = document.getElementByID("count").value + 1;}<input type="hidden" name="count" value = <%value%><...button onclick = "increment()">But I get an error because the value of the text box is null at first. How do I solve this?Note these are the most important lines of my code.

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