js
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script>
var c=0;
function count()
{
c+=1;
//console.log(c);
document.getElementById("cnt").innerHTML=c;
console.dir(document.getElementById("cnt"));
}
</script>
</head>
<body>
<h1>js demo</h1>
<p>
<label id="cnt">0</label>
</p>
<p>
<button onclick="count()">click</button>
</p>
</body>
</html>
js query
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="https://cdn.staticfile.net/jquery/1.10.2/jquery.min.js">
</script>
<script>
var c=0;
$(function(){
$("#count").click(
function(){
c+=1;
$("#cnt").text(c);
});
});
</script>
</head>
<body>
<h1>jquery demo</h1>
<p>
<label id="cnt">0</label>
</p>
<p>
<button id="count">click</button>
</p>
</body>
</html>