<頭>
JavaScript によって生成された動的な雨の背景効果
<中央>
<スクリプト言語=JavaScript>
var レインサイズ = 40;
var 速度 = 10;
var x = new Array();
var y = new Array();
var r = 新しい配列();
var cx = new Array();
var cy = new Array();
var doc_width = document.body.clientWidth;
var doc_height = document.body.clientHeight;
for(i=0; i
initRain();
if (i == 0) {
Document.write("
Document.write("absolute; Z-INDEX: " i "; VISIBILITY: ");
Document.write("visible; TOP: 15px; LEFT: 15px;">
");
Document.write(",");
他 {
Document.write("
Document.write("absolute; Z-INDEX: " i "; VISIBILITY: ");
Document.write("visible; TOP: 15px; LEFT: 15px;">");
Document.write(",.");
}
関数 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];
}
関数 RaindropIE() {
for (i = 0; i
UpdateRain();
If ((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()", 速度);
}
関数 updateRain() {
r[i] = 10;
x[i] = r[i] * sn cx[i];
y[i] = r[i] * cs cy[i];
}
関数 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();
