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热门关键词: 全球彩票平台,全球彩票注册平台,全球彩官网下载地址

【全球彩官网下载地址】Python爬虫PyQuery库基本用

jquery操作ul的一部分操作笔记整理(干货),jqueryul

1、html标记

 <ul id="attachText">
     <li data-text="111"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
     <li data-text="222"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
     <li data-text="333"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
 </ul>

JS

1、获取 li属性 data-text的值用 ,隔开

function GetValues()
  {
   var values = "";
   var obj = $("#attachText li");   
   if(obj.length>0)
   {
    var len = $(obj).length-1;
    $.each(obj, function (index, value)
    {
     //表示为最后一个元素
     if (index == len) {
      values  = $(value).attr("data-text");
     }
     else {
      values  = $(value).attr("data-text")   ",";
     }
    })
   }
   console.log(values);
  }

全球彩官网下载地址,输出结果;111,222,333

2、编辑的时候初始化ul的li项

function LoadAttach()
  {
   $("#attachText").html("");//先清空

   var data="111,222,333";
   var arr = data.split(',');
   $.each(arr, function (index, value) {  
     $("#attachText").prepend("<li data-value=""   $.parseJSON(data).data   ""><a>查看附件</a>  <a>删除</a></li>");     
   });
  }

如上这篇jquery操作ul的一对操作笔记整理(干货)便是我分享给大家的全体内容了,希望能给大家二个参照,也盼望大家多多援助帮客之家。

1、html标记 ul id="attachText" li data-text="111"a href="#" rel="external nofollow" rel="external nofollow" rel="ext...

1、html标记

亟需在页面中八个小的区域循环滚动体现信息(公告、活动、图片等等),而且,鼠标悬停时停下滚动并提醒,离开后,继续滚动。

jQuery完结列表自动滚动循环滚动体现新闻,jquery音讯

亟需在页面中二个小的区域循环滚动展示新闻(公告、活动、图片等等),而且,鼠标悬停时停下滚动并提醒,离开后,继续滚动。

效果图:
全球彩官网下载地址 1全球彩官网下载地址 2
上干货

html:

复制代码 代码如下:

<div id="news">
<ul>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="aaaaaaaaaaaaaaa">aaaaaaaaaaaaaaa</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="bbbbbbbbbbbbbbb">bbbbbbbbbbbbbbb</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ccccccccccccccc">ccccccccccccccc</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ddddddddddddddd">ddddddddddddddd</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="eeeeeeeeeeeeeee">eeeeeeeeeeeeeee</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="fffffffffffffff">fffffffffffffff</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ggggggggggggggg">ggggggggggggggg</a></li>
</ul>
</div>

css:

复制代码 代码如下:

ui,li {
list-style: none;
}
#news{
height: 75px;
overflow: hidden;
}

关键是js文件:

复制代码 代码如下:

$(function() {
var $this = $("#news");
var scrollTimer;
$this.hover(function() {
clearInterval(scrollTimer);
}, function() {
scrollTimer = setInterval(function() {
scrollNews($this);
}, 2000);
}).trigger("mouseleave");

function scrollNews(obj) {
var $self = obj.find("ul");
var lineHeight = $self.find("li:first").height();
$self.animate({
"marginTop": -lineHeight "px"
}, 600, function() {
$self.css({
marginTop: 0
}).find("li:first").appendTo($self);
})
}
})

注重便是对hover、setInterval、clearInterval、animate那些方法以及marginTop属性(marginLeft、top、left等等)的精晓和动用,要求小心的是,倘诺不加.trigger("mouseleave"),在网页起头化的时候列表不会滚动,还应该有appendTo能直接移动成分,就那几个了。

本文实例陈诉了Python爬虫PyQuery库基本用法。共享给大家供大家参考,具体如下:

 <ul id="attachText">
     <li data-text="111"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
     <li data-text="222"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
     <li data-text="333"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >查看附件</a>  <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></li>
 </ul>

效果图:
全球彩官网下载地址 3全球彩官网下载地址 4
上干货

自个儿想给这段jQuery代码增加自动循环境与发展展滚动作效果应,帮忙,代码如下:

给你二个函数
您调用下就OK了,援救加快滚动、循环滚动、间隔滚动、上下滚动、左右轮转等等
从来将这段代码拷贝到贰个JS文件之中,这段代码须要jquery1.3以上运维条件。
代码里面有调用示例。
望采纳··

/**
* @classDescription 一级Marquee,可做图片导航,图片轮换
* @dependence jQuery 1.3.2
* @DOM
* <div id="marquee">
* <ul>
* <li></li>
* <li></li>
* </ul>
* </div>
* @CSS
* #marquee {width:200px;height:50px;overflow:hidden;}
* @Usage
* $('#marquee').superMarquee(options);
* @options
*distance:200,//贰遍滚动的距离
*duration:20,//缓动作效果果,单次活动时间,越小速度越快,为0时无缓动作效果果
*time:5,//停马上间,单位为秒
*direction: 'left',//滚动方向,'left','right','up','down'
*scrollAmount:1,//步长
*scrollDelay:20//时间长度,单位为阿秒
*isEqual:true,//全体滚动的要素长度宽度是不是等于,true,false
*loop: 0,//循环滚动次数,0时Infiniti
*btnGo:{left:'#goL',right:'#goENVISION'},//调控方向的开关ID,有多个本性left,right,up,down分别对应多个趋势
*eventGo:'click',//鼠标事件
*controlBtn:{left:'#goL',right:'#goCRUISER'},//调控加快滚动的按键ID,有八个属性left,right,up,down分别对应四个方向
*newAmount:4,//加快滚动的大幅
*eventA:'mouseenter',//鼠标事件,加快
*eventB:'mouseleave',//鼠标事件,原速
*navId:'#marqueeNav', //导航容器ID,导航DOM:<ul><li>1</li><li>2</li><ul>,导航CSS:.navOn
*eventNav:'click' //导航事件
*/
(function($){

$.fn.superMarque......余下全文>>  

PyQuery库也是贰个不胜强劲又利落的网页深入分析库,假设你有前端开垦经验的,都应该接触过jQuery,那么PyQuery便是你非常绝佳的选项,PyQuery 是 Python 仿照 jQuery 的凶横落到实处。语法与 jQuery 大致完全同样,所以不用再去费心去记一些想不到的章程了。

JS

html:

jquery完结文字向左循环滚动

简言之的静态滚动 <div><marquee scrollamount="10" scrolldelay="0" direction="left"> 向左循环滚动</marquee></div> 把你想滚动的事物放在“想做巡回滚动”处  

须求在页面中三个小的区域循环滚动浮现消息(布告、活动、图片等等),何况,鼠标...

官方网站地址:

1、获取 li属性 data-text的值用 ,隔开

复制代码 代码如下:

jQuery参照他事他说加以考察文书档案:

function GetValues()
  {
   var values = "";
   var obj = $("#attachText li");   
   if(obj.length>0)
   {
    var len = $(obj).length-1;
    $.each(obj, function (index, value)
    {
     //表示为最后一个元素
     if (index == len) {
      values  = $(value).attr("data-text");
     }
     else {
      values  = $(value).attr("data-text")   ",";
     }
    })
   }
   console.log(values);
  }

<div id="news">
<ul>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="aaaaaaaaaaaaaaa">aaaaaaaaaaaaaaa</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="bbbbbbbbbbbbbbb">bbbbbbbbbbbbbbb</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ccccccccccccccc">ccccccccccccccc</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ddddddddddddddd">ddddddddddddddd</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="eeeeeeeeeeeeeee">eeeeeeeeeeeeeee</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="fffffffffffffff">fffffffffffffff</a></li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" title="ggggggggggggggg">ggggggggggggggg</a></li>
</ul>
</div>

1、字符串的初叶化

出口结果;111,222,333

css:

from pyquery import PyQuery as pq
html = '''<div>
  <ul>
     <li class="item-0">first item</li>
     <li class="item-1"><a href="link2.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >second item</a></li>
     <li class="item-0 active"><a href="link3.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >third item</a></li>
     <li class="item-1 active"><a href="link4.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fourth item</a></li>
     <li class="item-0"><a href="link5.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fifth item</a></li>
   </ul></div>'''
doc = pq(html)
print(doc)
print(type(doc))
print(doc('li'))

2、编辑的时候开首化ul的li项

复制代码 代码如下:

<div>
    <ul>
         <li class="item-0">first item</li>
         <li class="item-1"><a href="link2.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >second item</a></li>
         <li class="item-0 active"><a href="link3.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span class="bold">third item</span></a></li>
         <li class="item-1 active"><a href="link4.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fourth item</a></li>
         <li class="item-0"><a href="link5.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fifth item</a></li>
     </ul></div>
<class 'pyquery.pyquery.PyQuery'>
<li class="item-0">first item</li>
         <li class="item-1"><a href="link2.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >second item</a></li>
         <li class="item-0 active"><a href="link3.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span class="bold">third item</span></a></li>
         <li class="item-1 active"><a href="link4.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fourth item</a></li>
         <li class="item-0"><a href="link5.html" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >fifth item</a></li>

function LoadAttach()
  {
   $("#attachText").html("");//先清空

   var data="111,222,333";
   var arr = data.split(',');
   $.each(arr, function (index, value) {  
     $("#attachText").prepend("<li data-value=""   $.parseJSON(data).data   ""><a>查看附件</a>  <a>删除</a></li>");     
   });
  }

ui,li {
list-style: none;
}
#news{
height: 75px;
overflow: hidden;
}

2、打开html文件

以上那篇jquery操作ul的一部分操作笔记整理(干货)就是笔者分享给大家的全体内容了,希望能给大家三个参谋,也目的在于大家多多帮忙脚本之家。

关键是js文件:

在意路劲难点

本文由全球彩票平台发布于全球彩官网下载地址Web前端,转载请注明出处:【全球彩官网下载地址】Python爬虫PyQuery库基本用

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