div+css+js弹出div层窗口变灰,要覆盖整个页面,代码写清楚点,最好注释一下,谢谢,有帮助的给50分

2023-04-15 03:09:01html-css028

div+css+js弹出div层窗口变灰,要覆盖整个页面,代码写清楚点,最好注释一下,谢谢,有帮助的给50分,第1张

其实这种代码网上很多，不过都有弊端，，原理很简单，就是显示隐藏层以及 z-index ，的控制，不过这种控制对100%高度的控制还是不够的，样式也不是美观，而且不支持拖拽，，

我这里有个代码，你拿去研究吧

var dragDrop = function(dragArea,moveArea){//拖拽

this.dragArea = dragArea

this.moveArea = moveArea

this.xdom = null

this.mask = null//遮挡iframe

this.x = 0

this.y = 0

this.dbsw = top.document.scrollWidth

this.dbsh = top.document.scrollHeight

this.init()

}

dragDrop.prototype = {

getPosition:function(){//取元素坐标，如元素或其上层元素设置position relative，应该getpos(子元素).y-getpos(父元素).y

return document.documentElement.getBoundingClientRect &&function(o){//IE,FF,Opera

var pos = o.getBoundingClientRect(), root = o.ownerDocument || o.document

return {x:pos.left+root.documentElement.scrollLeft,y:pos.top+root.documentElement.scrollTop}

} || function(o){//Safari,Chrome,Netscape,Mozilla

var x = 0, y = 0

do{x += o.offsetLefty += o.offsetTop}while((o=o.offsetParent))

return {'x':x,'y':y}

}

}(),

setPos:function(obj,x,y){

obj.style.left = x + "px"

obj.style.top = y + "px"

mDown:function(e){

var isWK = (/applewebkit/i.test(navigator.appVersion.replace(/\s/g,'')))

var pos = this.getPosition(this.moveArea)

this.x = (isWK)?e.offsetX:(e.clientX-pos.x)

this.y = (isWK)?e.offsetY:(e.clientY-pos.y)

pos = null

if(this.dragArea.setCapture){this.dragArea.setCapture()}else{e.preventDefault()}

this.mask.style.left = this.xdom.parentNode.scrollLeft+'px'

this.mask.style.top = this.xdom.parentNode.scrollTop+'px'

this.mask.style.display = 'block'

this.xdom.onmousemove = this.mMove.bind(this)

this.xdom.onmouseup = this.mUp.bind(this)

mMove:function(e){

this.dragArea.style.cursor = "move"

e = e||window.event

var mx = (e.clientX - this.x)

var my = (e.clientY - this.y)

var rx = this.xdom.offsetWidth-this.moveArea.offsetWidth

var ry = this.xdom.offsetHeight-this.moveArea.offsetHeight

mx = (mx<=0)?0:(mx>=rx)?rx:mx

my = (my<=0)?0:(my>=ry)?ry:my

this.setPos(this.moveArea,mx,my)

mUp:function(e){

this.dragArea.style.cursor = "default"

e = e||window.event

var mx = (e.clientX - this.x)

var my = (e.clientY - this.y)

var rx = this.xdom.offsetWidth-this.moveArea.offsetWidth

var ry = this.xdom.offsetHeight-this.moveArea.offsetHeight

mx = (mx<=0)?0:(mx>=rx)?rx:mx

my = (my<=0)?0:(my>=ry)?ry:my

this.setPos(this.moveArea,mx,my)

if(this.dragArea.releaseCapture){this.dragArea.releaseCapture()}

this.mask.style.display = 'none'

this.xdom.onmousemove = function(){}

this.xdom.onmouseup = function(){}

init:function(){

if(Function.prototype.bind==undefined){

Function.prototype.bind = function(obj){

var owner = this,args = Array.prototype.slice.call(arguments),callobj = Array.prototype.shift.call(args)

return function(e){e=e||top.window.event||window.eventowner.apply(callobj,[e].concat(args))}

}

var ieop = (/(?:microsoft|opera)/i.test(navigator.appName))

var xDom = (window.top.document==document)?document:(window.top.document.body.tagName!='BODY')?document:window.top.document

this.xdom = (window.top.document==document)?document.body:(window.top.document.body.tagName=='BODY')?window.top.document.body:(ieop)?document.body:window.top.document.documentElement

var xdoc = xDom.createDocumentFragment()

this.mask = xDom.createElement('div')

this.mask.style.cssText = 'display:noneposition:absoluteleft:0top:0width:110%height:110%overflow:hiddenbackground:#000-moz-opacity:0opacity:0filter:alpha(opacity=0)z-index:9999'

xdoc.appendChild(this.mask)

this.xdom.appendChild(xdoc)

xDom = xdoc = null

this.moveArea.style.position = "absolute"

this.moveArea.style.zIndex = 10000

this.dragArea.onmousedown = this.mDown.bind(this)

}

var maskTips = function(width,height){//遮罩提示框

this.width = width||500

this.height = height||400

this.xdom = null

this.mask = null

this.ifr = null

this.layer = null

this.title = null

this.content = null

this.isOpen = false

this.init()

}

maskTips.prototype = {

getStyle:function(dom,stylename){

if(dom.currentStyle){

return dom.currentStyle[stylename]

}else{

return window.getComputedStyle(dom,null).getPropertyValue(stylename)

}

open:function(width,height){

var xdom = this.xdom.documentElementxelm = this.xdom.bodywidth = width||this.widthheight = height||this.height

xdom.style.width = '100%'xdom.style.height = '100%'xdom.style.overflow = 'hidden'

xelm.style.width = '100%'xelm.style.height = '100%'xelm.style.overflow = 'hidden'

this.ifr.style.left = xdom.scrollLeft+'px'

this.ifr.style.top = xdom.scrollTop+'px'

this.ifr.style.display = 'block'

this.mask.style.left = xdom.scrollLeft+'px'

this.mask.style.top = xdom.scrollTop+'px'

this.mask.style.display = 'block'

this.content.style.width = width-10+'px'

this.content.style.height = height-40+'px'

var left = xdom.scrollLeft+xdom.offsetWidth/2-(width/2)+'px'

var top = xdom.scrollTop+this.mask.offsetHeight/2-(height/1.8)+'px'

this.layer.style.width = width+'px'

this.layer.style.height = height+'px'

this.layer.style.left = left

this.layer.style.top = top

this.layer.style.display = 'block'

this.isOpen = true

hide:function(){

this.layer.style.display = 'none'

this.mask.style.display = 'none'

this.ifr.style.display = 'none'

var xdom = this.xdom.documentElement,xelm = this.xdom.body

xdom.style.width = 'auto'xdom.style.height = 'auto'xdom.style.overflow = 'auto'

xelm.style.width = 'auto'xelm.style.height = 'auto'xelm.style.overflow = 'auto'

this.isOpen = false

init:function(){

var cssMask = 'display:noneposition:absoluteleft:0top:0width:110%height:110%overflow:hiddenbackground:#000-moz-opacity:0.6opacity:0.6filter:alpha(opacity=60)z-index:101border:none'

var cssIfr = 'display:noneposition:absoluteleft:0top:0width:110%height:110%overflow:hiddenbackground:#fff-moz-opacity:0opacity:0filter:alpha(opacity=0)z-index:100border:none'

var cssLayer = 'display:noneposition:absoluteleft:0top:0width:'+this.width+'pxheight:'+this.height+'pxoverflow:hiddenzoom:1background:whiteborder:5px solid #dddz-index:102padding:0'

var ieop = (/(?:microsoft|opera)/i.test(navigator.appName))

var xDom = (window.top.document==document)?document:(window.top.document.body.tagName!='BODY')?document:window.top.document

var xElm = (window.top.document==document)?document.body:(window.top.document.body.tagName=='BODY')?window.top.document.body:(ieop)?document.body:window.top.document.documentElement

this.xdom = xDom

var xdoc = xDom.createDocumentFragment()

this.mask = xDom.createElement('div')

this.ifr = xDom.createElement('iframe')

this.layer = xDom.createElement('div')

xdoc.appendChild(this.ifr)

xdoc.appendChild(this.mask)

xdoc.appendChild(this.layer)

this.layer.innerHTML = '<div style="height:30pxbackground:#dddtext-align:rightoverflow:hiddenzoom:1"><h3 style="float:leftmargin:0padding:0font-size:12px">上传完毕后请点关闭按钮</h3><button style="width:25pxfont-size:12pxpadding:0text-align:center">×</button></div><div class="tips-bd" style="width:'+(this.width-10)+'pxheight:'+(this.height-40)+'pxpadding:5pxoverflow:auto">这里是内容</div><div class="tips-ft"></div>'

this.mask.style.cssText = cssMask

this.ifr.style.cssText = cssIfr

this.layer.style.cssText = cssLayer

this.title = this.layer.childNodes[0].childNodes[0]

this.content = this.layer.childNodes[1]

new dragDrop(this.layer.childNodes[0],this.layer)

this.layer.getElementsByTagName('button')[0].onclick = (function(o){return function(){o.hide()}})(this)

window.setTimeout(function(){xElm.appendChild(xdoc)xDom = xElm = xdoc = null})

}

var x = new maskTips(300,200)

function openDiv(){

x.open(750,700)