实现演示:
代码演示:
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"/> <title>PHP中文网--HTML5文字弹幕效果代码</title> <style type="text/css"> *{ margin:0; padding:0; list-style: none; border:0; } body{ background: #bcbcbc; } .main{ width: 600px; height: 400px; margin:0 auto; position: relative; } .main img{ position: absolute; right: 0; bottom:0; width: 100px; height: 100px; } #canvas{ display: block; background: #000; } </style> </head> <body> <div class="main"> <canvas id="canvas">嗨帅哥您的浏览器不支持canvas赶紧去升级吧</canvas> </div> <script type="text/javascript"> var canvas=document.getElementById('canvas'); var ctx=canvas.getContext("2d"); var width=600; var height=400; var colorArr=["yellow","pink","orange","red","green"]; var textArr=[ "PHP中文网不错我经常去!", "我用双手成就你的梦想", "犯我德邦者,虽远必诛!", "PHP中文网在线网络课程报名啦!!!", "PHP中文网在线网络课程报名啦!!!", "PHP中文网在线网络课程报名啦!!!", "PHP中文网在线网络课程报名啦!!!", "PHP中文网在线网络课程报名啦!!!", "陷阵之志,有死无生", "即使敌众我寡,末将亦能万军从中取敌将首级!" ] canvas.width=width; canvas.height=height; var image=new Image(); ctx.font = "20px Courier New"; var numArrL=[80,100,5,300,500,430];//初始的X var numArrT=[80,100,20,300,380,210];//初始的Y setInterval(function(){ ctx.clearRect(0,0,canvas.width,canvas.height); ctx.save(); for(var j=0;j<textArr.length;j++){ numArrL[j]-=(j+1)*0.6; ctx.fillStyle = colorArr[j] ctx.fillText(textArr[j],numArrL[j],numArrT[j]); } for(var i=0;i<textArr.length;i++){ if(numArrL[i]<=-500){ numArrL[i]=canvas.width; } } ctx.restore(); },30) </script> </body> </html>
以上就是HTML5文字弹幕效果源码,有兴趣的同学还可以到PHP中文网搜索更多相关知识哦~
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