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− | < | + | <html> |
− | < | + | <head lang="en"> |
− | + | <meta charset="UTF-8"> | |
− | <meta charset=" | + | <title>仿百度百科右侧导航代码jquery插件/</title> |
− | + | <style> | |
− | + | html,body,h3{ margin: 0; padding: 0;} | |
− | + | h2,h3{ height: 500px; margin-bottom: 10px; border: #ddd solid 1px;} | |
− | <title> | + | li{ list-style: none; margin: 0; vertical-align: top;} |
− | < | + | ul{ margin: 0; padding: 0;} |
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− | . | + | /*这是百科右侧导航代码的样式表*/ |
− | + | .directory-nav{position: fixed; right:50px; bottom:40px; padding: 12px 0 20px 32px; display: none;} | |
+ | .directory-nav li{height: 34px;line-height: 34px; position: relative;} | ||
+ | .directory-nav li a{} | ||
+ | .directory-nav .l1{ } | ||
+ | .directory-nav .l2{ text-indent:0.6em;} | ||
+ | .directory-nav .l1 a{font-size: 16px;} | ||
+ | .directory-nav .l2 a{font-size: 14px;} | ||
+ | .directory-nav,.directory-nav a{ color: #666;} | ||
+ | .directory-nav .cur a{ color: red;} | ||
+ | |||
+ | .directory-nav .line{ position: absolute; left:4px; top: 5px; bottom: 5px; z-index: 1; width: 2px; background: #ddd;} | ||
+ | .directory-nav .c-top,.directory-nav .c-bottom{ position: absolute; left: 0; z-index: 2; | ||
+ | display: block; width: 10px; height: 10px; font-size: 0; line-height: 0; | ||
+ | background: url(images/directory-nav.png) no-repeat 0 -69px; | ||
} | } | ||
− | + | .directory-nav .c-dot{ | |
− | . | + | position: absolute; left:-32px; top: 50%; z-index: 2; margin-top: -5px; |
− | + | display: block; width: 10px; height: 10px; font-size: 0; line-height: 0; | |
− | + | background: url(images/directory-nav.png) no-repeat -275px 0; | |
− | + | ||
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} | } | ||
− | + | .directory-nav .c-top{ top: 0} | |
− | + | .directory-nav .c-bottom{ bottom: 0} | |
− | + | .directory-nav .cur-tag{ | |
− | + | position: absolute; left: -1px; top:30px; z-index: 5; margin-top: -6px; | |
− | . | + | display: block; width: 19px; height: 13px; font-size: 0; line-height: 0; |
− | + | background: url(images/directory-nav.png) no-repeat -271px -37px; | |
− | + | -webkit-transition:top .3s ease 0s; | |
+ | transition:top .3s ease 0s; | ||
} | } | ||
− | + | </style> | |
− | + | </head> | |
− | + | <body style="padding: 40px;"> | |
− | + | <div style=" padding-bottom:20px;line-height: 2;"> | |
− | + | <h1>向下滚动,观察右下角 仿百度百科右侧导航代码jquery插件</h1> | |
− | + | <h2>标题一</h2> | |
+ | <h3>标题一-1</h3> | ||
+ | <h3>标题一-2</h3> | ||
+ | <h3>标题一-3</h3> | ||
+ | <h2>标题二</h2> | ||
+ | <h3>标题一-1</h3> | ||
+ | <h3>标题一-2</h3> | ||
+ | <h3>标题一-3</h3> | ||
+ | <h2>标题三</h2> | ||
+ | <h2>标题四</h2> | ||
+ | <h2>标题五</h2> | ||
+ | <h2>标题六</h2> | ||
− | + | <script src="http://apps.bdimg.com/libs/jquery/1.11.3/jquery.min.js"></script> | |
− | + | <script> | |
− | + | /* | |
− | + | * 懒人建站 http://www.51xuediannao.com/ | |
− | } | + | * 仿百度百科右侧导航代码 - 页面目录结构导航 v0.01 |
+ | * 只写了两级,无限级别也可以,是逻辑上的级别,html结构全是同一级别 | ||
+ | * 滑标动画用的css3过渡动画,不支持的浏览器就没动画效果了 | ||
+ | * 和百度百科比起来还是比较弱,没有实现右边也可以滚动的功能 | ||
+ | */ | ||
+ | function DirectoryNav($h,config){ | ||
+ | this.opts = $.extend(true,{ | ||
+ | scrollThreshold:0.5, //滚动检测阀值 0.5在浏览器窗口中间部位 | ||
+ | scrollSpeed:700, //滚动到指定位置的动画时间 | ||
+ | scrollTopBorder:500, //滚动条距离顶部多少的时候显示导航,如果为0,则一直显示 | ||
+ | easing: 'swing', //不解释 | ||
+ | delayDetection:200, //延时检测,避免滚动的时候检测过于频繁 | ||
+ | scrollChange:function(){} | ||
+ | },config); | ||
+ | this.$win = $(window); | ||
+ | this.$h = $h; | ||
+ | this.$pageNavList = ""; | ||
+ | this.$pageNavListLis =""; | ||
+ | this.$curTag = ""; | ||
+ | this.$pageNavListLiH = ""; | ||
+ | this.offArr = []; | ||
+ | this.curIndex = 0; | ||
+ | this.scrollIng = false; | ||
+ | this.init(); | ||
+ | } | ||
− | . | + | DirectoryNav.prototype = { |
− | + | init:function(){ | |
− | + | this.make(); | |
+ | this.setArr(); | ||
+ | this.bindEvent(); | ||
+ | }, | ||
+ | make:function(){ | ||
+ | //生成导航目录结构,这是根据需求自己生成的。如果你直接在页面中输出一个结构那也挺好不用 搞js | ||
+ | $("body").append('<div class="directory-nav" id="directoryNav"><ul></ul><span class="cur-tag"></span><span class="c-top"></span><span class="c-bottom"></span><span class="line"></span></div>>'); | ||
+ | var $hs = this.$h, | ||
+ | $directoryNav = $("#directoryNav"), | ||
+ | temp = [], | ||
+ | index1 = 0, | ||
+ | index2 = 0; | ||
+ | $hs.each(function(index){ | ||
+ | var $this = $(this), | ||
+ | text = $this.text(); | ||
+ | if(this.tagName.toLowerCase()=='h2'){ | ||
+ | index1++; | ||
+ | if(index1%2==0) index2 = 0; | ||
+ | temp.push('<li class="l1"><span class="c-dot"></span>'+index1+'. <a class="l1-text">'+text+'</a></li>'); | ||
+ | }else{ | ||
+ | index2++; | ||
+ | temp.push('<li class="l2">'+index1+'.'+index2+' <a class="l2-text">'+text+'</a></li>'); | ||
− | + | } | |
− | + | }); | |
− | } | + | $directoryNav.find("ul").html(temp.join("")); |
− | + | ||
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− | + | ||
− | + | ||
− | + | //设置变量 | |
+ | this.$pageNavList = $directoryNav; | ||
+ | this.$pageNavListLis = this.$pageNavList.find("li"); | ||
+ | this.$curTag = this.$pageNavList.find(".cur-tag"); | ||
+ | this.$pageNavListLiH = this.$pageNavListLis.eq(0).height(); | ||
− | + | if(!this.opts.scrollTopBorder){ | |
− | + | this.$pageNavList.show(); | |
− | + | ||
− | + | ||
} | } | ||
− | + | }, | |
− | + | setArr:function(){ | |
− | + | var This = this; | |
− | + | this.$h.each(function(){ | |
− | + | var $this = $(this), | |
− | + | offT = Math.round($this.offset().top); | |
− | + | This.offArr.push(offT); | |
− | $( | + | |
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}); | }); | ||
− | + | }, | |
− | $( | + | posTag:function(top){ |
− | $(" | + | this.$curTag.css({top:top+'px'}); |
− | + | }, | |
− | + | ifPos:function(st){ | |
− | + | var offArr = this.offArr; | |
− | + | //console.log(st); | |
+ | var windowHeight = Math.round(this.$win.height() * this.opts.scrollThreshold); | ||
+ | for(var i=0;i<offArr.length;i++){ | ||
+ | if((offArr[i] - windowHeight) < st) { | ||
+ | var $curLi = this.$pageNavListLis.eq(i), | ||
+ | tagTop = $curLi.position().top; | ||
+ | $curLi.addClass("cur").siblings("li").removeClass("cur"); | ||
+ | this.curIndex = i; | ||
+ | this.posTag(tagTop+this.$pageNavListLiH*0.5); | ||
+ | //this.curIndex = this.$pageNavListLis.filter(".cur").index(); | ||
+ | this.opts.scrollChange.call(this); | ||
+ | } | ||
+ | } | ||
+ | }, | ||
+ | bindEvent:function(){ | ||
+ | var This = this, | ||
+ | show = false, | ||
+ | timer = 0; | ||
+ | this.$win.on("scroll",function(){ | ||
+ | var $this = $(this); | ||
+ | clearTimeout(timer); | ||
+ | timer = setTimeout(function(){ | ||
+ | This.scrollIng = true; | ||
+ | if($this.scrollTop()>This.opts.scrollTopBorder){ | ||
+ | if(!This.$pageNavListLiH) This.$pageNavListLiH = This.$pageNavListLis.eq(0).height(); | ||
+ | if(!show){ | ||
+ | This.$pageNavList.fadeIn(); | ||
+ | show = true; | ||
+ | } | ||
+ | This.ifPos( $(this).scrollTop() ); | ||
+ | }else{ | ||
+ | if(show){ | ||
+ | This.$pageNavList.fadeOut(); | ||
+ | show = false; | ||
+ | } | ||
+ | } | ||
+ | },This.opts.delayDetection); | ||
}); | }); | ||
− | $(" | + | this.$pageNavList.on("click","li",function(){ |
− | $( | + | var $this = $(this), |
− | + | index = $this.index(); | |
− | + | This.scrollTo(This.offArr[index]); | |
− | + | }) | |
− | + | }, | |
+ | scrollTo: function(offset,callback) { | ||
+ | var This = this; | ||
+ | $('html,body').animate({ | ||
+ | scrollTop: offset | ||
+ | }, this.opts.scrollSpeed, this.opts.easing, function(){ | ||
+ | This.scrollIng = false; | ||
+ | //修正弹两次回调 蛋疼 | ||
+ | callback && this.tagName.toLowerCase()=='body' && callback(); | ||
}); | }); | ||
+ | } | ||
+ | }; | ||
− | + | //实例化 | |
− | + | var directoryNav = new DirectoryNav($("h2,h3"),{ | |
− | + | scrollTopBorder:0 //滚动条距离顶部多少的时候显示导航,如果为0,则一直显示 | |
− | + | }); | |
− | + | ||
− | + | ||
− | + | ||
− | + | </script> | |
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</body> | </body> | ||
</html> | </html> |
Revision as of 20:51, 11 October 2018