JS画线(实例代码)

时间：2021-05-26

IE下画线
复制代码 代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://:vml">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<style type="text/css">
v/:* { behavior:url(#default#VML); }
</style>
</head>
<body>
<v:line
from='200,200'
to='300,100'
style='position:absolute;z-index:8'>
</v:line>
</body>
</html>

<script>
var R =function(){};
R.prototype.createLine = function (startX,startY,endX,endY){
var le = document.createElement( "<v:line><v:line>" );
le.from = startX + ',' + startY ;
le.to = endX + ',' + endY ;
le.strokecolor= "red" ;
le.strokeweight= "1pt" ;
return le;
}
var d =new R();
document.body.appendChild(d.createLine(1,1,200,100));
</script>

FF下画线
复制代码 代码如下:
<html>
<head>
<title>A canvas fillRect, strokeRect and clearRect example</title>
<meta name="DC.creator" content="Kamiel Martinet, http://www.martinet.nl/">
<meta name="DC.publisher" content="Mozilla Developer Center, http://developer.mozilla.org">
<script type="text/javascript">
function drawShape(){
// get the canvas element using the DOM
var canvas = document.getElementById('tutorial');

// Make sure we don't execute when canvas isn't supported

if (canvas.getContext){

// use getContext to use the canvas for drawing
var ctx = canvas.getContext('2d');

// Draw shapes
ctx.fillRect(25,25,100,100);
ctx.clearRect(45,45,60,60);
ctx.strokeRect(50,50,50,50);

ctx.beginPath();
ctx.moveTo(100,100);
ctx.lineTo(200,250);
ctx.lineTo(50,250);
ctx.closePath();
ctx.stroke();

} else {
alert('You need Safari or Firefox 1.5+ to see this demo.');
}
}
</script>
<style type="text/css">
</style>
</head>

<body onload="drawShape();">
<div>
<canvas id="tutorial" width="400" height="400"></canvas>
</div>
</body>
</html>

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