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JS画线(实例代码)

  • 时间:2022-12-26 13:52 编辑: 来源: 阅读:
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摘要:JS画线(实例代码)
[b]IE下画线 [/b]
[u]复制代码[/u] 代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com: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>
[b]FF下画线 [/b]
[u]复制代码[/u] 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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