Cara menggunakan teknologi jQuery untuk membangunkan menu_jquery halaman gaya ios

Rendering:

Sistem pengendalian dan kaedah navigasi gaya IOS semakin popular di pasaran Dalam tutorial jQuery hari ini, kami memperkenalkan cara menjana navigasi menu gaya iPhone.

Kod HTML

Kami menggunakan

tertanam untuk menjana kandungan menu dan memasukkannya dalam teg

<nav>
<h1>导航菜单</h1>
<ul>
<li>
<h2>专题教程</h2>
<ul>
<li>
<h3>HTML专题教程</h3>
<ul>
<li><a href="http://www.gbin1.com/tutorials/html5-tutorial/html5-introduction">GBin1专题之HTML5教程 - 第一篇：HTML5介绍</a></li>
<li><a href="http://www.gbin1.com/tutorials/html5-tutorial/html5-new-elements">GBin1专题之HTML5教程 - 第二篇：HTML5元素</a></li>
<li><a href="http://www.gbin1.com/tutorials/html5-tutorial/html5-video">GBin1专题之HTML5教程 - 第三篇：HTML5 Video元素</a></li>
<li><a href="http://www.gbin1.com/tutorials/html5-tutorial/html5-video-doc">GBin1专题之HTML5教程 - 第四篇：HTML5 Video Doc</a></li>
<li><a href="http://www.gbin1.com/tutorials/html5-tutorial/html5-audio">GBin1专题之HTML5教程 - 第五篇：HTML5 Audio元素</a></li>
</ul>
<li>
<h3>GBin1热点秀</h3>
<ul>
<li><a href="http://www.gbin1.com/tutorials/hotspot/hotspot1/">GBin1专题之Web热点秀#1</a>
<li><a href="http://www.gbin1.com/tutorials/hotspot/hotspot2/">GBin1专题之Web热点秀#2</a>
<li><a href="http://www.gbin1.com/tutorials/hotspot/hotspot3/">GBin1专题之Web热点秀#3</a>
</ul>
 
</ul>

. . . . . .

Javascript

Gunakan jQuery untuk bertanya dan melintasi li dan menjana item menu, seperti berikut:

$(function(){
 
var nav = $("nav"),
navTitle = nav.children().first(),
navTitleLabel = navTitle.text(),
mainList = navTitle.next(),
subLevels = mainList.find("ul"),
hiddenClass = "hidden";
 
nav.addClass("js");
mainList.find("a:last-child").addClass("files");
subLevels.addClass(hiddenClass);
 
navTitle.wrap($("<div/>")).before($("<a/>", {
href: "#",
className: hiddenClass,
click: function(e){
var $this = $(this),
activeList = subLevels.filter(":visible:last"),
activeListParents = activeList.parents("ul");
navTitle.text($this.text());
if(activeListParents.length > 2)
$this.text(activeListParents.eq(1).prev().text());
else if (activeListParents.length > 1)
$this.text(navTitleLabel)
else
$this.addClass(hiddenClass).empty();
setTimeout(
function(){
activeList.addClass(hiddenClass);
}, slideDuration - 100
);
mainList.css("left", parseInt(mainList.css("left")) + navWidth + "px");
e.preventDefault();
}
}));
 
subLevels.prev().wrap($("<a/>", {
href:"#",
click: function(e){
var $this = $(this);
backArrow.removeClass(hiddenClass).text(navTitle.text());
navTitle.text($this.text());
$this.next().removeClass(hiddenClass);
mainList.css("left", parseInt(mainList.css("left")) - navWidth + "px");
e.preventDefault();
}
}));
 
var backArrow = navTitle.prev(),
navWidth = nav.width(),
firstSubLevel = subLevels.eq(0),
docStyle = document.documentElement.style,
slideDuration = 0,
timingRatio = 1000;
 
if(docStyle.WebkitTransition !== undefined)
slideDuration = parseFloat(
firstSubLevel.css("-webkit-transition-duration")
) * timingRatio;
 
if(docStyle.MozTransition !== undefined)
slideDuration = parseFloat(
firstSubLevel.css("-moz-transition-duration")
) * timingRatio;
 
if(docStyle.OTransition !== undefined)
slideDuration = parseFloat(
firstSubLevel.css("-o-transition-duration")
) * timingRatio;
 
});

CSS

Gunakan imej untuk menjana butang di bahagian atas halaman:

body {
font-size: 14px;
font-family: Arial;
background:#f5f5f8;
}
.js {
position:absolute;
width:320px;
height:480px;
top:50%;
left:50%;
margin:-280px 0 0 -160px;
overflow:hidden;
-webkit-border-radius:5px;
-moz-border-radius:5px;
border-radius:5px;
background:#fff;
-webkit-box-shadow:0 1px 2px rgba(0,0,0,.25);
-moz-box-shadow:0 1px 2px rgba(0,0,0,.25);
box-shadow:0 1px 2px rgba(0,0,0,.25);
}
.js .files {
background-image:none;
}
.js .hidden {
display:none;
}
.js * {
font-size:14px;
font-weight:400;
margin:0;
padding:0;
list-style:none;
}
.js > div {
position:relative;
z-index:1;
height:44px;
text-align:center;
font-size:14px;
line-height:44px;
color:#fff;
text-shadow:0 -1px 0 rgba(0,0,0,.4);
background:#7f94b0;
background:-webkit-gradient(
linear,
0 0,
0 100%,
color-stop(0,#b5c0ce),
color-stop(0.5,#889bb3),
color-stop(0.51,#7f94b0),
color-stop(1,#6d83a1)
);
background:-moz-linear-gradient(
top center,
#b5c0ce,
#889bb3 22px,
#7f94b0 23px,
#6d83a1
);
border-bottom:1px solid #2d3033;
-webkit-border-top-left-radius:5px;
-webkit-border-top-right-radius:5px;
-moz-border-radius-topleft:5px;
-moz-border-radius-topright:5px;
border-top-left-radius:5px;
border-top-right-radius:5px;
}
.js > div a {
height:31px;
top:7px;
left:20px;
font-size:14px;
line-height:31px;
color:#fff;
background:url('../images//center.png');
}
.js > div a, .js > div a:before, .js > div a:after {
position:absolute;
}
.js > div a:before {
left:-13px;
content:url('../images//left.png');
}
.js > div a:after {
right:-10px;
top:0;
content:url('../images//right.png');
}
.js > div a:active {
opacity:.65;
}
.js a {
text-decoration:none;
}
.js ul a {
display:block;
color:#000;
padding:.8em 18px;
border-bottom:1px solid #e0e0e0;
background:url('images/next.png') no-repeat 94% 50%;
}
.js ul a:hover {
background-color:#edf3fe;
}
.js a:focus {
outline:none;
}
.js ul {
position:absolute;
top:0;
padding-top:45px;
width:100%;
-webkit-transition:left .4s ease-out;
-moz-transition:left .4s ease-out;
-o-transition:left .4s ease-out;
}
.js ul {
left:0;
}
.js ul ul {
left:320px;
}

Terdapat rendering dan kod yang kelihatan sangat jelas.