js请教怎么处理图片 请教图片在页面里随便飘,但当鼠标碰到图片是图片停在飘动当鼠标拿个时图片再飘给代码 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 http://ad.jz123.cn/ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE> New Document </TITLE><META NAME="Generator" CONTENT="EditPlus"><META NAME="Author" CONTENT=""><META NAME="Keywords" CONTENT=""><META NAME="Description" CONTENT=""></HEAD><SCRIPT LANGUAGE="JavaScript"><!-- var fishLeft = "left"; var fishTop = "top"; var stap = 1; function fishSwims() { var leftMax = document.body.offsetWidth - document.getElementById("advFish").offsetWidth; var topMax = document.body.offsetHeight - document.getElementById("advFish").offsetHeight; var curLeft = document.getElementById("advFish").style.pixelLeft; var curTop = document.getElementById("advFish").style.pixelTop; if(curLeft < 0) { fishLeft = "right"; } else if (curLeft > leftMax) { fishLeft = "left"; } if(curTop < 0) { fishTop ="down"; } else if (curTop > topMax) { fishTop ="top"; } if(fishLeft == "left") { curLeft = curLeft - stap; } else { curLeft = curLeft + stap; } if(fishTop == "top") { curTop = curTop - stap; } else { curTop = curTop + stap; } document.getElementById("advFish").style.pixelLeft = curLeft; document.getElementById("advFish").style.pixelTop = curTop; setTimeout("fishSwims()",10); }//--> </SCRIPT><BODY onLoad="fishSwims()"><div id="advFish" style="position:absolute; left:16px; top:80px; z-index:1"> <img src="images/fish.gif"></div><img src="images/sea.jpg" width=1190px></BODY></HTML> 也许你有用本说明:把如下代码加入<body>区域中<DIV id=dot0 style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; VISIBILITY: hidden; WIDTH: 0px"></DIV><DIV id=dot1 style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; WIDTH: 0px"><IMG height=30 src="java2000.gif" width=88> </DIV><DIV id=dot2 style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; WIDTH: 0px"><IMG height=30 src="java2000.gif" width=88> </DIV><SCRIPT language=JavaScript><!-- // define number of divsvar nDots = 3;// define starting position of imagevar Xpos = 0;var Ypos = 0;// define speed of moving imagevar DELTAT = .01;// define how far the image drops from the cursorvar SEGLEN = 10;// define how big is the loop the image makes around the cursorvar SPRINGK = 10;// the greater the mass the slower the speed of imagevar MASS = 1;// the greater the gravity the smaller is the loopvar GRAVITY = 50;// the greater the resistance the slower the speed of imagevar RESISTANCE = 10;var STOPVEL = 0.1;var STOPACC = 0.1;var DOTSIZE = 11;// define the size of the bounces of the imagevar BOUNCE = 0.75;var isNetscape = navigator.appName=="Netscape";var followmouse = true;var dots = new Array();init();function init(){var i = 0;for (i = 0; i < nDots; i++) {dots[i] = new dot(i);}if (!isNetscape) {//}for (i = 0; i < nDots; i++) {dots[i].obj.left = dots[i].X;dots[i].obj.top = dots[i].Y;} if (isNetscape) {startanimate();} else {setTimeout("startanimate()", 3000);}}function dot(i) {this.X = Xpos;this.Y = Ypos;this.dx = 0;this.dy = 0;if (isNetscape) { this.obj = eval("document.dot" + i);} else {this.obj = eval("dot" + i + ".style");}}function startanimate() { setInterval("animate()", 20);}function setInitPositions(dots){var startloc = document.all.tags("LI");var i = 0;for (i = 0; i < startloc.length && i < (nDots - 1); i++) {dots[i+1].X = startloc[i].offsetLeftstartloc[i].offsetParent.offsetLeft - DOTSIZE;dots[i+1].Y = startloc[i].offsetTop +startloc[i].offsetParent.offsetTop + 2*DOTSIZE;}dots[0].X = dots[1].X;dots[0].Y = dots[1].Y - SEGLEN;}function MoveHandler(e){Xpos = e.pageX;Ypos = e.pageY; return true;}function MoveHandlerIE() {Xpos = window.event.x + document.body.scrollLeft;Ypos = window.event.y + document.body.scrollTop; }if (isNetscape) {document.captureEvents(Event.MOUSEMOVE);document.onMouseMove = MoveHandler;} else { document.onmousemove = MoveHandlerIE; }function vec(X, Y){this.X = X;this.Y = Y;}function springForce(i, j, spring){var dx = (dots[i].X - dots[j].X);var dy = (dots[i].Y - dots[j].Y);var len = Math.sqrt(dx*dx + dy*dy);if (len > SEGLEN) {var springF = SPRINGK * (len - SEGLEN);spring.X += (dx / len) * springF;spring.Y += (dy / len) * springF;}}function animate() { var start = 0;if (followmouse) {dots[0].X = Xpos;dots[0].Y = Ypos; start = 1;}for (i = start ; i < nDots; i++ ) {var spring = new vec(0, 0);if (i > 0) {springForce(i-1, i, spring);}if (i < (nDots - 1)) { springForce(i+1, i, spring);}var resist = new vec(-dots[i].dx * RESISTANCE,-dots[i].dy * RESISTANCE);var accel = new vec((spring.X + resist.X)/ MASS,(spring.Y + resist.Y)/ MASS + GRAVITY); dots[i].dx += (DELTAT * accel.X); dots[i].dy += (DELTAT * accel.Y);if (Math.abs(dots[i].dx) < STOPVEL && Math.abs(dots[i].dy) < STOPVEL && Math.abs(accel.X) < STOPACC && Math.abs(accel.Y) < STOPACC) { dots[i].dx = 0; dots[i].dy = 0;} dots[i].X += dots[i].dx;dots[i].Y += dots[i].dy;var height, width;if (isNetscape) {height = window.innerHeight + document.scrollTop;width = window.innerWidth + document.scrollLeft;} else { height = document.body.clientHeight + document.body.scrollTop;width = document.body.clientWidth + document.body.scrollLeft;}if (dots[i].Y >= height - DOTSIZE - 1) {if (dots[i].dy > 0) {dots[i].dy = BOUNCE * -dots[i].dy;}dots[i].Y = height - DOTSIZE - 1;}if (dots[i].X >= width - DOTSIZE) {if (dots[i].dx > 0) {dots[i].dx = BOUNCE * -dots[i].dx;}dots[i].X = width - DOTSIZE - 1;}if (dots[i].X < 0) {if (dots[i].dx < 0) {dots[i].dx = BOUNCE * -dots[i].dx;}dots[i].X = 0;}dots[i].obj.left = dots[i].X; dots[i].obj.top = dots[i].Y; }}// --></SCRIPT> 求助!后台显示当前登陆的用户名的代码是怎样的? 请教 如何制作 内容左右移动的 标签面板 求验证3个汉字或5个字母组合怎么写 Infragistics的UltraWebGrid控件客户端代码新增行时出错? 求助高手:如何实现梅花雪树的排序?也就是如何根据同级的节点的text按字母表进行排序? 关于setTimeout()时间无效? JS删除表格的行 怎样删除指定ID的某<TR></TR>? 请问有什么方法可以让text只显示数据? 高分求:中文版的Js教程和参考手册? 利用window.open时,对于程序运行的后台操作 flex 客户端如何下载服务器上的SWF文件 JS 问题
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
var fishLeft = "left";
var fishTop = "top";
var stap = 1; function fishSwims() {
var leftMax = document.body.offsetWidth - document.getElementById("advFish").offsetWidth; var topMax = document.body.offsetHeight - document.getElementById("advFish").offsetHeight; var curLeft = document.getElementById("advFish").style.pixelLeft;
var curTop = document.getElementById("advFish").style.pixelTop; if(curLeft < 0) {
fishLeft = "right";
} else if (curLeft > leftMax) {
fishLeft = "left";
} if(curTop < 0) {
fishTop ="down";
} else if (curTop > topMax) {
fishTop ="top";
} if(fishLeft == "left") {
curLeft = curLeft - stap;
} else {
curLeft = curLeft + stap;
} if(fishTop == "top") {
curTop = curTop - stap;
} else {
curTop = curTop + stap;
} document.getElementById("advFish").style.pixelLeft = curLeft;
document.getElementById("advFish").style.pixelTop = curTop; setTimeout("fishSwims()",10);
}
//-->
</SCRIPT>
<BODY onLoad="fishSwims()">
<div id="advFish" style="position:absolute; left:16px; top:80px; z-index:1">
<img src="images/fish.gif">
</div>
<img src="images/sea.jpg" width=1190px>
</BODY>
</HTML>
本说明:
把如下代码加入<body>区域中
<DIV id=dot0
style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; VISIBILITY: hidden; WIDTH: 0px"></DIV>
<DIV id=dot1
style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; WIDTH: 0px"><IMG
height=30 src="java2000.gif" width=88> </DIV>
<DIV id=dot2
style="HEIGHT: 0px; LEFT: 0px; POSITION: absolute; TOP: 0px; WIDTH: 0px"><IMG
height=30 src="java2000.gif" width=88> </DIV>
<SCRIPT language=JavaScript>
<!--
// define number of divs
var nDots = 3;
// define starting position of image
var Xpos = 0;
var Ypos = 0;
// define speed of moving image
var DELTAT = .01;
// define how far the image drops from the cursor
var SEGLEN = 10;
// define how big is the loop the image makes around the cursor
var SPRINGK = 10;
// the greater the mass the slower the speed of image
var MASS = 1;
// the greater the gravity the smaller is the loop
var GRAVITY = 50;
// the greater the resistance the slower the speed of image
var RESISTANCE = 10;
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 11;
// define the size of the bounces of the image
var BOUNCE = 0.75;
var isNetscape = navigator.appName=="Netscape";
var followmouse = true;
var dots = new Array();
init();
function init()
{
var i = 0;
for (i = 0; i < nDots; i++) {
dots[i] = new dot(i);
}
if (!isNetscape) {
//
}
for (i = 0; i < nDots; i++) {
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y;
}
if (isNetscape) {
startanimate();
} else {
setTimeout("startanimate()", 3000);
}
}
function dot(i)
{
this.X = Xpos;
this.Y = Ypos;
this.dx = 0;
this.dy = 0;
if (isNetscape) {
this.obj = eval("document.dot" + i);
} else {
this.obj = eval("dot" + i + ".style");
}
}
function startanimate() {
setInterval("animate()", 20);
}
function setInitPositions(dots)
{
var startloc = document.all.tags("LI");
var i = 0;
for (i = 0; i < startloc.length && i < (nDots - 1); i++) {
dots[i+1].X = startloc[i].offsetLeft
startloc[i].offsetParent.offsetLeft - DOTSIZE;
dots[i+1].Y = startloc[i].offsetTop +
startloc[i].offsetParent.offsetTop + 2*DOTSIZE;
}
dots[0].X = dots[1].X;
dots[0].Y = dots[1].Y - SEGLEN;
}
function MoveHandler(e)
{
Xpos = e.pageX;
Ypos = e.pageY;
return true;
}
function MoveHandlerIE() {
Xpos = window.event.x + document.body.scrollLeft;
Ypos = window.event.y + document.body.scrollTop;
}
if (isNetscape) {
document.captureEvents(Event.MOUSEMOVE);
document.onMouseMove = MoveHandler;
} else { document.onmousemove = MoveHandlerIE; }
function vec(X, Y)
{
this.X = X;
this.Y = Y;
}
function springForce(i, j, spring)
{
var dx = (dots[i].X - dots[j].X);
var dy = (dots[i].Y - dots[j].Y);
var len = Math.sqrt(dx*dx + dy*dy);
if (len > SEGLEN) {
var springF = SPRINGK * (len - SEGLEN);
spring.X += (dx / len) * springF;
spring.Y += (dy / len) * springF;
}
}
function animate() {
var start = 0;
if (followmouse) {
dots[0].X = Xpos;
dots[0].Y = Ypos;
start = 1;
}
for (i = start ; i < nDots; i++ ) {
var spring = new vec(0, 0);
if (i > 0) {
springForce(i-1, i, spring);
}
if (i < (nDots - 1)) {
springForce(i+1, i, spring);
}
var resist = new vec(-dots[i].dx * RESISTANCE,-dots[i].dy * RESISTANCE);
var accel = new vec((spring.X + resist.X)/ MASS,(spring.Y + resist.Y)/ MASS + GRAVITY);
dots[i].dx += (DELTAT * accel.X);
dots[i].dy += (DELTAT * accel.Y);
if (Math.abs(dots[i].dx) < STOPVEL && Math.abs(dots[i].dy) < STOPVEL &&
Math.abs(accel.X) < STOPACC &&
Math.abs(accel.Y) < STOPACC) {
dots[i].dx = 0;
dots[i].dy = 0;
}
dots[i].X += dots[i].dx;
dots[i].Y += dots[i].dy;
var height, width;
if (isNetscape) {
height = window.innerHeight + document.scrollTop;
width = window.innerWidth + document.scrollLeft;
} else {
height = document.body.clientHeight + document.body.scrollTop;
width = document.body.clientWidth + document.body.scrollLeft;
}
if (dots[i].Y >= height - DOTSIZE - 1) {
if (dots[i].dy > 0) {
dots[i].dy = BOUNCE * -dots[i].dy;
}
dots[i].Y = height - DOTSIZE - 1;
}
if (dots[i].X >= width - DOTSIZE) {
if (dots[i].dx > 0) {
dots[i].dx = BOUNCE * -dots[i].dx;
}
dots[i].X = width - DOTSIZE - 1;
}
if (dots[i].X < 0) {
if (dots[i].dx < 0) {
dots[i].dx = BOUNCE * -dots[i].dx;
}
dots[i].X = 0;
}
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y;
}
}
// -->
</SCRIPT>