JavaScript动态雨景代码，网页配景下雨结果

发布时间：2018-08-13 22:24:12 所属栏目：活动来源：站长网

导读：Java Script动态雨景代码，网页配景下雨结果，下了很大的雨，首要用JS的数组实现，下雨的速率可以改变，数值越大速率越慢，雨滴的几多也是可以配置的，数据越大雨滴越多。演示代码： HTMLHEADTITLEJavaScript动态雨景/TITLE/HEADBODY bgcolor=#fef4d2 cen

　　JavaScript动态雨景代码，网页配景下雨结果，下了很大的雨，首要用JS的数组实现，下雨的速率可以改变，数值越大速率越慢，雨滴的几多也是可以配置的，数据越大雨滴越多。

　　演示代码：

<HTML> <HEAD> <TITLE>JavaScript动态雨景</TITLE> </HEAD> <BODY bgcolor="#fef4d2" > <center> <script language=JavaScript>  var rainsize = 40;  var speed = 10; var x = new Array(); var y = new Array(); var r = new Array(); var cx = new Array(); var cy = new Array(); var doc_width = document.body.clientWidth; var doc_height = document.body.clientHeight; for(i=0; i<rainsize; ++i) { initRain(); if (i == 0) { document.write("<div id="dot"+ i +"" style="POSITION: "); document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: "); document.write("visible; TOP: 15px; LEFT: 15px;"><font color="blue">"); document.write(",</font></div>"); } else { document.write("<div id="dot"+ i +"" style="POSITION: "); document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: "); document.write("visible; TOP: 15px; LEFT: 15px;"><font color="blue">"); document.write(",.</font></div>"); } } function initRain() { a = 6; r[i] = 1; sn = Math.sin(a); cs = Math.cos(a); cx[i] = Math.random() * doc_width + 1; cy[i] = Math.random() * doc_height + 1; x[i] = r[i] * sn + cx[i]; y[i] = cy[i]; } function raindropIE() { for (i = 0; i < rainsize; ++ i) { updateRain(); if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) { makeRain(); doc_width = document.body.clientWidth; doc_height = document.body.clientHeight; } document.all["dot"+i].style.pixelTop = y[i]; document.all["dot"+i].style.pixelLeft = x[i]; } setTimeout("raindropIE()", speed); } function updateRain() { r[i] += 10; x[i] = r[i] * sn + cx[i]; y[i] = r[i] * cs + cy[i]; } function makeRain() { r[i] = 1; cx[i] = Math.random() * doc_width + 1; cy[i] = 1; x[i] = r[i] * sn + cx[i]; y[i] = r[i] * cs + cy[i]; } raindropIE(); </script> </BODY> </HTML><br /><center>如不能表现结果，请按Ctrl+F5革新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
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