<progress>
Description
The progress element indicates the completion of a task.
The value attribute defines the current progress. It is on a scale between zero and the value of the max attribute.
When the max attribute is omitted, the scale is between zero and 1. You express progress using floating-point numbers, such as 0.3 for 30%.
Example
<!DOCTYPE HTML>
<html>
<body>
<progress id="myprogress" value="10" max="100"></progress>
<p>
<button type="button" value="30">30%</button>
<button type="button" value="60">60%</button>
<button type="button" value="90">90%</button>
</p>
<script>
var buttons = document.getElementsByTagName('BUTTON');
var progress = document.getElementById('myprogress');
for (var i = 0; i < buttons.length; i++) {
buttons[i].onclick = function(e) {
progress.value = e.target.value;
}; <!--from www . j av a 2s . com-->
}
</script>
</body>
</html>
The code above generates the following result.
