<!--- 界面效果做到了 但函数还是在执行中--->
<HTML>
<HEAD>
<script language="javascript">
var secs = 20; //倒计时的秒数
var URL ="http://mzsts.host3v.com" ;
function Load(){
for(var i=secs;i>=0;i--)
{
window.setTimeout('doUpdate(' + i + ')', (secs-i) * 1000);
}
}
function doUpdate(num)
{
if(secs>0)
{document.getElementById('ShowDiv').innerHTML = '将在'+num+'秒后自动跳转到主页' ;
if(num == 0) { window.location =URL; }
}
}
function timefun(){
secs =-1;
}
</script>
</HEAD>
<body onload="Load()" >
<canvas id="myCanvas" width="50px" height="50px" >
</canvas>
<canvas id="myCanvas2" width="180px" height="50px" >
</canvas>
<script type="text/javascript">
<!-- 1 -->
var canvas = document.getElementById("myCanvas");
if(canvas.getContext){
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.strokeStyle = "blue";
var circle = { x : 10, y : 40, r : 10 };
ctx.arc(circle.x, circle.y, circle.r, -Math.PI*3/ 4, Math.PI / 2, false); ctx.stroke();
}
<!-- 2 -->
var canvas = document.getElementById("myCanvas");
if(canvas.getContext){
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.strokeStyle = "blue";
var circle = { x : 25, y : 26, r : 10 };ctx.arc(circle.x, circle.y, circle.r, -Math.PI/2, Math.PI/4, true); ctx.stroke();
}
<!-- 3-->
var canvas = document.getElementById("myCanvas");
if(canvas.getContext){
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.strokeStyle = "red";
var circle = { x : 30, y : 35, r : 10 };
ctx.arc(circle.x, circle.y, circle.r, -Math.PI*3/ 4, Math.PI / 2, false); ctx.stroke();
}
<!-- 4 -->
var canvas = document.getElementById("myCanvas");
if(canvas.getContext){
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.strokeStyle = "red";
var circle = { x :45, y : 23, r : 10 };ctx.arc(circle.x, circle.y, circle.r, -Math.PI/2, Math.PI/4, true); ctx.stroke();
}
var canvas = document.getElementById("myCanvas2");
if(canvas.getContext){
var ctx = canvas.getContext("2d");
ctx.font = "10px Courier New";
ctx.fillStyle = "blue";
ctx.fillText("文洲 的个人主页，彼岸", 10, 20);
ctx.fillText("http://mzsts.host3v.com", 10, 40);
}
</script>
<div id="ShowDiv"> </div>
</br>
<button onclick="timefun()">点击延时</button>
<button onclick="window.open('http://mzsts.host3v.com')">直接跳转</button>
</br> </br>
<textarea rows="5" cols="40">
<body onload="Load('http://mzsts.host3v.com')">
<body onload="Load('http:www.baidu.com')">
</textarea>
</body>
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