Phiên bản đầy đủ: jsB@nk » Multimedia » Sự kiện » Tuyết rơi dùng hình ảnh
URL: https://www.javascriptbank.com/falling-snowflakes-with-images.html
Đây là một đoạn mã khác để tạo cảnh tuyết rơi trên trang web bằng cách sử dụng hình ảnh làm các bông tuyết.
Phiên bản đầy đủ: jsB@nk » Multimedia » Sự kiện » Tuyết rơi dùng hình ảnh
URL: https://www.javascriptbank.com/falling-snowflakes-with-images.html
<script type="text/javascript">/******************************************* Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html)******************************************/ //Configure below to change URL path to the snow image var snowsrc="snow3.gif" // Configure below to change number of snow to render var no = 10; // Configure whether snow should disappear after x seconds (0=never): var hidesnowtime = 0; // Configure how much snow should drop down before fading ("windowheight" or "pageheight") var snowdistance = "pageheight";///////////Stop Config////////////////////////////////// var ie4up = (document.all) ? 1 : 0; var ns6up = (document.getElementById&&!document.all) ? 1 : 0;function iecompattest(){return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body} var dx, xp, yp; // coordinate and position variables var am, stx, sty; // amplitude and step variables var i, doc_width = 800, doc_height = 600; if (ns6up) { doc_width = self.innerWidth; doc_height = self.innerHeight; } else if (ie4up) { doc_width = iecompattest().clientWidth; doc_height = iecompattest().clientHeight; } dx = new Array(); xp = new Array(); yp = new Array(); am = new Array(); stx = new Array(); sty = new Array(); snowsrc=(snowsrc.indexOf("dynamicdrive.com")!=-1)? "snow.gif" : snowsrc for (i = 0; i < no; ++ i) { dx[i] = 0; // set coordinate variables xp[i] = Math.random()*(doc_width-50); // set position variables yp[i] = Math.random()*doc_height; am[i] = Math.random()*20; // set amplitude variables stx[i] = 0.02 + Math.random()/10; // set step variables sty[i] = 0.7 + Math.random(); // set step variablesif (ie4up||ns6up) { if (i == 0) { document.write("<div id="dot"+ i +"" style="POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;"><a href="http://dynamicdrive.com"><img src='"+snowsrc+"' border="0"></a></div>"); } else { document.write("<div id="dot"+ i +"" style="POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;"><img src='"+snowsrc+"' border="0"></div>"); } } } function snowIE_NS6() { // IE and NS6 main animation function doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")? iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight; for (i = 0; i < no; ++ i) { // iterate for every dot yp[i] += sty[i]; if (yp[i] > doc_height-50) { xp[i] = Math.random()*(doc_width-am[i]-30); yp[i] = 0; stx[i] = 0.02 + Math.random()/10; sty[i] = 0.7 + Math.random(); } dx[i] += stx[i]; document.getElementById("dot"+i).style.top=yp[i]+"px"; document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px"; } snowtimer=setTimeout("snowIE_NS6()", 10); }function hidesnow(){if (window.snowtimer) clearTimeout(snowtimer)for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden"}if (ie4up||ns6up){ snowIE_NS6();if (hidesnowtime>0)setTimeout("hidesnow()", hidesnowtime*1000)}</script>/javascript/multimedia/Falling_Snowflakes_with_images/snow3.gif