<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>circle</title>
<style type="text/css"> #myCanvas{} #nihao{ position: absolute; top:10px; z-index: 1;
}
</style>
</head>
<body style="background:#FBFBFB;">
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"> not suopport canvas </canvas>
<div id="nihao"></div>
<script>
var text=document.getElementById("nihao");
text.innerHTML="woshiwuxinguo"; var i=0.9;//这里默认设置好评率为90%
var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d");
ctx.beginPath();
ctx.lineWidth=10;
ctx.strokeStyle="gray";
ctx.arc(100,75,50,0,2*Math.PI);
ctx.fillStyle="#FBFBFB";
ctx.fill();
ctx.stroke();
ctx.beginPath();
ctx.translate(100,75);
ctx.rotate(-90*Math.PI/180);
ctx.strokeStyle="#FFCFCF";
ctx.arc(0,0,50,0,2*Math.PI*i);
ctx.stroke();
c.addEventListener("mouseover", function(e) {
ctx.beginPath();
ctx.strokeStyle="gray";
ctx.arc(0,0,50,0,2*Math.PI);
ctx.stroke(); var finish=i; var step=0; var internal=setInterval(function(e) {
console.log("step:"+step); if(step<finish){
step=step+0.01;
ctx.beginPath();
ctx.strokeStyle="#FFCFCF";
ctx.arc(0,0,50,0,2*Math.PI*step);
ctx.stroke();
}else{
clearInterval(internal);
}
}, 0.5)
}, true) </script>
</body>
</html>
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