js兑现 鼠标拖动图片
日期：2014-05-16 浏览次数：20336 次
js实现 鼠标拖动图片
<html>
<head>
<title>拖动演示</title>
</head>
<style type="text/css">
#plane1 {position:absolute; left:10; top:20; z-index:5}
#plane2 {position:absolute; left:10; top:20; width:800; height:600; z-index:999; background:url(mask1.png) no-repeat;}
</style>
<SCRIPT LANGUAGE="JavaScript">
var isNav, isIE
if (parseInt(navigator.appVersion) >= 4) {
if (navigator.appName == "Netscape") {
isNav = true
} else {
isIE = true
}
}
function setZIndex(obj, zOrder) {
obj.zIndex = zOrder
}
function shiftTo(obj, x, y) {
if (isNav) {
obj.moveTo(x,y)
} else {
obj.pixelLeft = x
obj.pixelTop = y
}
}
// ***End API Functions***
// Global holds reference to selected element
var selectedObj
// Globals hold location of click relative to element
var offsetX, offsetY
// Find out which element has been clicked on
function setSelectedElem(evt) {
if (isNav) {
// declare local var for use in upcoming loop
var testObj
// make copies of event coords for use in upcoming loop
var clickX = evt.pageX
var clickY = evt.pageY
// loop through all layers (starting with frontmost layer)
// to find if the event coordinates are in the layer
for (var i = document.layers.length - 1; i >= 0; i--) {
testObj = document.layers[i]
if ((clickX > testObj.left) &&
(clickX < testObj.left + testObj.clip.width) &&
(clickY > testObj.top) &&
(clickY < testObj.top + testObj.clip.height)) {
// if so, then set the global to the layer, bring it
// forward, and get outa here
selectedObj = testObj
setZIndex(selectedObj, 100)
return
}
}
} else {
// use IE event model to get the targeted element
<html>
<head>
<title>拖动演示</title>
</head>
<style type="text/css">
#plane1 {position:absolute; left:10; top:20; z-index:5}
#plane2 {position:absolute; left:10; top:20; width:800; height:600; z-index:999; background:url(mask1.png) no-repeat;}
</style>
<SCRIPT LANGUAGE="JavaScript">
var isNav, isIE
if (parseInt(navigator.appVersion) >= 4) {
if (navigator.appName == "Netscape") {
isNav = true
} else {
isIE = true
}
}
function setZIndex(obj, zOrder) {
obj.zIndex = zOrder
}
function shiftTo(obj, x, y) {
if (isNav) {
obj.moveTo(x,y)
} else {
obj.pixelLeft = x
obj.pixelTop = y
}
}
// ***End API Functions***
// Global holds reference to selected element
var selectedObj
// Globals hold location of click relative to element
var offsetX, offsetY
// Find out which element has been clicked on
function setSelectedElem(evt) {
if (isNav) {
// declare local var for use in upcoming loop
var testObj
// make copies of event coords for use in upcoming loop
var clickX = evt.pageX
var clickY = evt.pageY
// loop through all layers (starting with frontmost layer)
// to find if the event coordinates are in the layer
for (var i = document.layers.length - 1; i >= 0; i--) {
testObj = document.layers[i]
if ((clickX > testObj.left) &&
(clickX < testObj.left + testObj.clip.width) &&
(clickY > testObj.top) &&
(clickY < testObj.top + testObj.clip.height)) {
// if so, then set the global to the layer, bring it
// forward, and get outa here
selectedObj = testObj
setZIndex(selectedObj, 100)
return
}
}
} else {
// use IE event model to get the targeted element
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