html5 移动端加载动画,移动端页面添加首屏loading效果

首屏显性加载

body {

margin:0;

padding:0;

}

#loadingbg {

background-color : #222222;

height : 100%;

width : 100%;

position : fixed;

z-index: 3;

}

#loadingwrap {

height : 20px;

width : 200px;

box-shadow : 0px 0px 10px #111111 inset;

margin: 0 auto;

margin-top: 50vh;

}

#loading {

height : 20px;

width : 0;

text-align: center;

background-color : #C9F76F;

box-shadow : 0px 0px 5px #222 inset;

}

.wrap{

width : 100%;

margin: 0 auto;

}

.bg-img{

width: 100%;

max-width:75vh;

}

loading

var loadNum = 0;

var imgNum = $(‘.bg-img’).length;

var txtGrad = parseInt(100 / imgNum);

var bgGrad = parseInt(200 / imgNum);

$(‘.bg-img’).each(function () {

//加入complete为了判断图片是否在未绑定load事件就已经加载完成

if ($(this)[0].complete) {

loadNum += 1;

$(“#loading”).text(loadNum * txtGrad + “%”).width(loadNum * bgGrad + “px”)

if (loadNum >= imgNum) {

$(“#loading”).text(“100%”).width(“200px”);

$(“#loadingbg”).animate({ opacity: “0” }, function () {

$(this).hide()

})

}

} else {

$(this).load(function () {

loadNum += 1;

$(“#loading”).text(loadNum * txtGrad + “%”).width(loadNum * bgGrad + “px”)

if (loadNum >= imgNum) {

$(“#loading”).text(“100%”).width(“200px”);

$(“#loadingbg”).animate({ opacity: “0” }, function () {

$(this).hide()

})

}

})

}

})