<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns=" http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/javascript; charset=gb2312" /></head>
<body>
<input type="button" value="点击" onclick="checkRight()" />
已点次数：
<span id="dianjicishu"></span>
</body>
<script>
function checkRight(){
var x=0;
x=x+1;
document.getElementById('dianjicishu').innerHTML = x;
}
</script>
</html>