<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <script src="Jquery1.7.js"></script> <style type="text/css"> #php100{ border:1px solid #ccc;} </style> <script type="text/javascript"> var canvas = document.getElementById('php100'); var p100=canvas.getContext("2d"); p100.lineWidth=10 p100.strokeStyle="red"; var pp=false; $(function () { $("#php100").mousedown(function (e) { var mouseX = e.pageX - this.offsetLeft; var mouseY = e.pageY - this.offsetTop; pp = true; p100.moveTo(mouseX, mouseY); //起始位置 }) //当鼠标抬起时 $("#php100").mouseup(function(e){ pp=false; }); //当鼠标移动时 $("#php100").mousemove(function(e){ var mouseX = e.pageX - this.offsetLeft; var mouseY = e.pageY - this.offsetTop; if(pp){ p100.lineTo(mouseX,mouseY); //终止位置 p100.stroke(); //结束图形 } }) }) </script> </head> <body> <canvas id="php100" width="500" height="400"></canvas> </body> </html>
原创文章,作者:Maggie-Hunter,如若转载,请注明出处:https://blog.ytso.com/tech/pnotes/8735.html