canvas简单画板效果
分类:实例代码
canvas简单画板效果属于前端实例代码,有关更多实例代码大家可以查看。
分享一段代码实例,它实现了简单的画板效果。
代码实例如下:
<!doctype html> <html> <head> <meta charset="utf-8"> <meta name="author" content="http://www.pipipi.net/" /> <title>前端教程网</title> <script type="text/javascript"> window.onload = function() { var oC = document.getElementById('c1'); var oGC = oC.getContext('2d'); oC.onmousedown = function(ev) { var ev = ev || window.event; oGC.moveTo(ev.clientX - oC.offsetLeft, ev.clientY - oC.offsetTop); document.onmousemove = function(ev) { var ev = ev || window.event; oGC.lineTo(ev.clientX - oC.offsetLeft, ev.clientY - oC.offsetTop); oGC.stroke(); }; document.onmouseup = function() { document.onmousemove = null; document.onmouseup = null; }; }; }; </script> </head> <body> <div> <canvas id="c1" width="400" height="450"></canvas> </div> </body> </html>
canvas简单画板效果,这样的场景在实际项目中还是用的比较多的,关于canvas简单画板效果就介绍到这了。