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Realize Zhihu front-end dynamic list effect based on jQuery and Bootstrap framework
Realize Zhihu front-end dynamic list effect based on jQuery and Bootstrap framework
Recently implemented a front-end effect that imitates Zhihu dynamic list based on jQuery and Bootstrap framework, which basically achieves the same effect as Zhihu dynamic list. As follows:
1. Basic list items
2. Expand and collapse the full text of list items (the first item is expanded in the picture)
3. Expand comment items
4. List data Load (load all) .5. The likes of the animation effect
6. The hover display function of the reply list
html code is as follows:
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE9" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" /> <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css" /> <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap-theme.min.css" /> <script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script> <script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> <script src="scripts/jquery.json.min.js"></script> <link rel="stylesheet" href="styles/main.css" /> <script src="scripts/test.js"></script> </head> <body> <div style="display:none;"> <div id="t_dn" class="dynamic_node"> <meta class="dn_id" content=""/> <meta class="dn_user_id" content=""/> <div class="dn_left"> <div class="dn_user_avatar"><a href=""> <img class="img-thumbnail" src="" / alt="Realize Zhihu front-end dynamic list effect based on jQuery and Bootstrap framework" ></a> </div> <div class="dn_zannum"> <span></span> </div> <div class="dn_dianzan"> <a href=""><span class="glyphicon glyphicon-thumbs-up" aria-hidden="true"></span></a> </div> </div> <div class="dn_right"> <div class="dn_title"> <span class="glyphicon glyphicon-share-alt" aria-hidden="true"></span> <a href=""><span></span></a> </div> <div class="dn_right_top"> <div class="dn_username"> <a href=""><span class="dn_username_name"></span></a> <span class="dn_username_signature"></span> </div> <div class="dn_content_close1"> <a href=""> <span class="glyphicon glyphicon-triangle-bottom" aria-hidden="true"></span> </a> </div> </div> <div class="dn_content"> <a href="" class="dn_content_link"> <span class="dn_content_digest"></span> </a> <span class="dn_content_text"></span> </div> <div class="dn_action"> <div class="dn_content_close2"> <a href=""> <span class="glyphicon glyphicon-triangle-top" aria-hidden="true"></span> </a> </div> <a href=""><span class="dn_action_report">举报</span></a> <a href=""><span class="dn_action_share">分享</span></a> <a href=""><span class="dn_action_comm">103条评论</span></a> <span class="dn_action_time"></span> </div> <div class="dn_comm"> <div class="dn_comm_items"> </div> <div class="dn_comm_showall"> <button id="dn_comm_showall_button" type="button" class="btn btn-default btn-xs">显示全部评论</button> </div> <div class="dn_comm_replay"> <div class="dn_comm_replay_field"> <textarea class="form-control" rows="2" placeholder="写下你的评论..."></textarea> </div> <div class="dn_comm_replay_buttoms"> <button type="button" class="btn btn-primary btn-sm">评论</button> <a href="" class="dn_comm_replay_buttoms_cancel">取消</a> </div> </div> </div> </div> </div> <div id="t_dn_comm" class="dn_comm_item"> <meta class="dn_comm_id" content=""> <div class="dn_comm_item_left"> <div> <a href="#"><img class="img-rounded" src="images/user.png" / alt="Realize Zhihu front-end dynamic list effect based on jQuery and Bootstrap framework" > </a> </div> </div> <div class="dn_comm_item_mid"> <div class="dn_comm_item_middle_username"> <a href="#"><span>用户名</span></a> </div> <div class="dn_comm_item_mid_content"> <span></span> </div> <div class="dn_comm_foot"> <div class="dn_comm_foot_left"> <span>2015-09-08 12:00:09</span> </div> <div class="dn_comm_item_mid_action"> <a href="#"><span>回复</span></a> <a href="#"><span>举报</span></a> </div> </div> </div> <div class="dn_comm_item_right"> <div class="dn_comm_zannum"> <span>5</span> </div> <div class="dn_comm_dianzan"> <a href="#"> <span class="glyphicon glyphicon-thumbs-up" aria-hidden="true"></span> </a> </div> </div> </div> </div> <div class="global"> <div class="list_layout"> </div> <div class="load_flag"> <button id="load_flag_button" type="button" class="btn btn-default btn-s">加载更多</button> <div id="load_flag_info"><small>没有更多了 ！</small></div> </div> </div> </body> </html>
<style>
/* global navigadion */
.nav{
width:100%;
height:3.5em;
padding-top:0em;
vertical-align:middle;
background-image: -moz-linear-gradient(top, #99FFFF, #FFFFFF);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #99FFFF), color-stop(1, #FFFFFF));
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#99FFFF', endColorstr='#FFFFFF', GradientType='0');
}
.nav-content{
width:1024px;
margin-left: auto;
margin-right: auto;
}
#nav_user_name,#nav_user_avatar,#nav_btn_notice,#nav_btn_discuss,#nav_btn_read,#nav_btn_index,#nav_search_text,#nav_search_text{
margin-top:0.5em;
}
.brand{
font-size:2.5em;
font-weight:lighter;
color:#5e5e5e;
font-family: "Microsoft JhengHei"! important;
}
.avatar img{
padding:0.2em;
}
#notice_num{
visibility:visible;
backgroung-color:red;
color:white;
width: 1.6em;
height: 1.6em;
background: red;
-moz-border-radius: 1em;
-webkit-border-radius: 1em;
border-radius: 1em;
position:fixed;
}
#nav_user_name{
float:right;
}
#nav_user_avatar{
float:right;
}
.content{
width:1024px;
margin-left: auto;
margin-right: auto;
}
.left{
float:left;
width:100%;
}
.right{
background-color:white;
float:left;
width:100%;
}
.foot{
float:left;
}
.foot span{
font-size:0.8em;
font-weight:lighter;
}
.dashed-line{
border-bottom:1px dashed;
border-bottom-color:#C9C9C9;
}
/*##############################################*/
/* dynamic list */
.dynamic_node{
width:100%;
border-top:1px solid #eee;
padding-bottom:1em;
padding-top:1em;
float:left;
}
.dn_left{
width:50px;
float:left;
}
.dn_left img{
width:50px;
height:50px;
}
.dn_dianzan,.dn_zannum{
width:100%;
float:left;
margin-left:auto;
margin-right:auto;
text-align:center;
}
.dn_right{
padding-left:1em;
width:666px;
float:left;
}
.dn_title label{
font-weight:lighter;
color:#6b6b6b;
}
.dn_title a span{
color:#259;
font-weight:bold;
}
.dn_username_name{
font-weight:bold;
font-size:0.8em;
color:#259;
}
.dn_username_signature{
font-size:0.8em;
}
.dn_action{
float:right;
}
.dn_action span{
float:right;
margin-left:1em;
margin-top:1em;
font-size:0.8em;
}
.dn_content_digest,.dn_content_text{
float:left;
font-size:0.8em;
color:#363636;
width:100%;
}
.dn_content_text{
display:none;
}
.dn_content_close1,.dn_content_close2{
float:right;
display:none;
font-size:1em;
}
.dn_action{
display:none;
float:right;
}
.dn_comm{
float:left;
width:100%;
display:none;
}
.dn_comm_items{
float:left;
width:100%;
}
.dn_comm_item{
float:left;
margin-top:0.8em;
border-top:1px solid #eee;
padding-top:0.8em;
}
.dn_comm_item_left{
width:50px;
float:left;
}
.dn_comm_item_mid{
width:560px;
float:left;
}
.dn_right_top{
width:100%;
float:left;
}
.dn_comm_item_right{
width:30px;
float:right;
text-align:center;
}
.dn_comm_item_left img{
width:30px;
height:30px;
}
.dn_comm_item_middle_username,.dn_comm_item_mid_content,.dn_comm_item_mid_time{
float:left;
font-size:0.8em;
}
.dn_comm_item_mid_action{
float:right;
margin-left:1em;
font-size:0.8em;
display:none;
}
.dn_comm_item_mid_action span{
margin-left:1em;
}
.dn_comm_dianzan{
font-size:1em;
width:100%;
margin-left:auto;
margin-right:auto;
}
.dn_comm_zannum{
font-size:1em;
color:#797979;
width:100%;
margin-left:auto;
margin-right:auto;
}
.dn_comm_foot_left{
float:left;
padding-top:0.4em;
color:#797979;
width:50%;
font-size:0.7em;
}
.dn_comm_replay{
float:left;
width:100%;
margin-top:1em;
padding-top:1em;
border-top:1px solid #eee;
}
.dn_comm_replay_field{
float:left;
width:100%;
margin-bottom:1em;
}
.dn_comm_replay_buttoms a,button{
float:right;
}
.dn_comm_replay_buttoms_cancel{
padding-top:0.5em;
margin-right:1em;
}
.dn_comm_dianzan{
width:100%;
float:left;
}
.dn_comm_showall{
float:left;
width:100%;
margin-top:1em;
padding-top:1em;
border-top:1px solid #eee;
}
.dn_comm_showall #dn_comm_showall_button{
float:left;
width:80%;
margin-left:10%;
margin-right:10%;
margin-top:1em;
border-top:1px solid #eee;
}
/*##############################################*/
/* */
.global{
width:716px;
}
.list_layout,.load_flag{
width:100%;
float:left;
display:block;
}
.load_flag{
padding-top:1em;
border-top:1px solid #eee;
margin-bottom:3em;
}
.load_flag button{
float:left;
width:80%;
margin-left:10%;
margin-right:10%;
}
.load_flag #load_flag_info{
float:left;
text-align:center;
width:80%;
margin-left:10%;
margin-right:10%;
display:none;
}
/*##############################################*/
/* */
</style>
js文件内容如下（test.js）：
[javascript] view plain copy
$(document).ready(function(){
url_user = "http://user.com/i=";
url_img = "http://127.0.0.1/pages/";
url_dianzan = "http://dianzan.com";
url_dn_detail = "http://dt.com/i=";
layout_list = $(".list_layout");
t_dn = $("#t_dn");
t_dn_comm = $("#t_dn_comm");
maxnum = 2; // 最大加载次数
num = 1;
load_flag = $(".load_flag");
function render_dn_list(arr_dn){
for(var i=0; i<arr_dn.length;i++){
var node_dn = t_dn.clone();
node_dn.find(".dn_id").attr("content",arr_dn[i]["ID"]); //动态ID
node_dn.find(".user_id").attr("content",arr_dn[i]["userid"]); //用户ID
node_dn.find(".dn_left .dn_user_avatar a").attr("href",url_user+arr_dn[i]["userid"]); // 用户名链接
node_dn.find(".dn_left .dn_user_avatar a img").attr("src",url_img+arr_dn[i]["avatar"]); // 用户头像
node_dn.find(".dn_zannum span").text(arr_dn[i]["zan"]); // 点赞数
//node_dn.find(".dn_dianzan a").attr("href",arr_dn[i]["avatar"]); // 点赞链接
node_dn.find(".dn_title a").attr("href",url_dn_detail+arr_dn[i]["fid"]+"#"+arr_dn[i]["ID"]); //跳转动态所在页锚点
node_dn.find(".dn_title a span").text(arr_dn[i]["from"]); // 所属标题
node_dn.find(".dn_username a").attr("src",url_user+arr_dn[i]["userid"]); //用户名链接
node_dn.find(".dn_username_name").text(arr_dn[i]["username"]); //用户名
node_dn.find(".dn_username_signature").text(arr_dn[i]["signature"]); //用户签名
var digest = "";
var content = arr_dn[i]["content"];
if(content.length > 150){
digest=content.substring(0,150)+"... ";
}
else{
digest=content;
}
node_dn.find(".dn_content_digest").text(digest); //摘要
node_dn.find(".dn_content_digest").append("<a href='#'> 显示全部</a>");
node_dn.find(".dn_content_text").text(content); // 正文
node_dn.find(".dn_action_time").text(arr_dn[i]["posttime"]); // 发布时间
// 添加点击摘要事件
node_dn.find(".dn_content_digest").click(
function(){
var dn_right = $(this).parent().parent().parent();
dn_right.find(".dn_content_text").toggle();
dn_right.find(".dn_content_digest").toggle();
dn_right.parent().find(".dn_content_close1").toggle();
dn_right.parent().find(".dn_content_close2").toggle();
dn_right.parent().find(".dn_action").toggle();
var comm= dn_right.find(".dn_comm");
if(comm.css("display") == "block"){
comm.css("display","none");
}
return false; // !!
}
);
// 添加点击折叠事件
node_dn.find(".dn_content_close2,.dn_content_close1").click(
function(){
var dn_right = $(this).parent().parent();
dn_right.find(".dn_content_text").toggle();
dn_right.find(".dn_content_digest").toggle();
dn_right.parent().find(".dn_content_close1").toggle();
dn_right.parent().find(".dn_content_close2").toggle();
dn_right.parent().find(".dn_action").toggle();
var comm= dn_right.find(".dn_comm");
if(comm.css("display") == "block"){
comm.css("display","none");
}
return false; // !!
}
);
// 为评论、分享、举报按钮添加hover下划线效果
node_dn.find(".dn_action_comm,.dn_action_share,.dn_action_report").hover(
function(){
$(this).css("text-decoration","underline");
return false; // !!
}
,
function(){
$(this).css("text-decoration","none");
return false; // !!
}
);
// 为列表项添加点赞事件
node_dn.find(".dn_dianzan").click(
function(){
//alert('zan');
var dn_left = $(this).parent();
var zan_num = dn_left.find(".dn_zannum span");
var currzan = zan_num.text();
zan_num.text(parseInt(currzan)+1);
zan_num.animate({fontSize:"1.2em"},"fast");
$(this).animate({fontSize:"1.2em"},"fast");
zan_num.animate({fontSize:"1em"},"fast");
$(this).animate({fontSize:"1em"},"fast");
return false; // !!
}
);
// 加载评论，并处理评论项事件
function load_comm(dn_id,dn_comm_items,flag){
var load_url = "mockdata/commdata_";
if(flag == 1){
load_url = "mockdata/commdata_";
}
else{
load_url = "mockdata/commdata_";
}
$.ajax({
url:"mockdata/commdata_"+dn_id,
type: "get",//使用get方法访问后台
dataType: "json",//返回json格式的数据
async:false,
//data: "pageIndex=" + pageIndex,//要发送的数据
complete :function(){$("#load").hide();},//AJAX请求完成时隐藏loading提示
success: function(msg){//msg为返回的数据，在这里做数据绑定
var encoded = $.toJSON(msg);
ret_code =$.evalJSON(encoded).code;
arr_dn =$.evalJSON(encoded).data;
if(ret_code == "200"){
for(var i=0;i<arr_dn.length;i++){
var n_comm = t_dn_comm.clone();
n_comm.find(".dn_comm_id").attr("content",arr_dn[i]["ID"]);
n_comm.find(".dn_comm_item_left a").attr("href",url_user+arr_dn[i]["userid"]);
n_comm.find(".dn_comm_item_left img").attr("content",url_img+arr_dn[i]["avatar"]);
n_comm.find(".dn_comm_item_middle_username a").attr("href",url_user+arr_dn[i]["userid"]);
n_comm.find(".dn_comm_item_middle_username a span").text(arr_dn[i]["username"]);
n_comm.find(".dn_comm_item_mid_content span").text(arr_dn[i]["content"]);
n_comm.find(".dn_comm_foot_left span").text(arr_dn[i]["posttime"]);
n_comm.find(".dn_comm_zannum span").text(arr_dn[i]["zan"]);
// 为评论项添加hover效果
n_comm.hover(function(){
$(this).find(".dn_comm_item_mid_action").toggle();
});
// 为评论项添加点赞动画效果
var zan = n_comm.find(".dn_comm_dianzan");
zan.click(
function(){
var zan_num = $(this).parent().find(".dn_comm_zannum");
var currzan = zan_num.text();
zan_num.text(parseInt(currzan)+1);
zan_num.animate({fontSize:"1.2em"},"fast");
$(this).animate({fontSize:"1.2em"},"fast");
zan_num.animate({fontSize:"1em"},"fast");
$(this).animate({fontSize:"1em"},"fast");
return false;
}
);
dn_comm_items.append(n_comm);
}
}
else{
alert(ret_code);
}
}
});
};
// 加载某一项的热门评论
node_dn.find(".dn_action_comm").click(
function(){
var dn = $(this).parent().parent().parent().parent();
dn.find(".dn_comm").toggle();
var dn_comm_items = dn.find(".dn_comm_items");
dn_comm_items.empty();
var dn_id = dn.find(".dn_id").attr("content");
load_comm(dn_id,dn_comm_items,0);
return false; // !!
}
);
// 加载某一项的全部评论
node_dn.find(".dn_comm_showall_button").click(
function(){
var dn = $(this).parent().parent().parent().parent();
var dn_comm_items = dn.find(".dn_comm_items");
dn_comm_items.empty();
var dn_id = dn.find(".dn_id").attr("content");
load_comm(dn_id,dn_comm_items,1);
return false; // !!
}
);
//
layout_list.append(node_dn);
}
}
function fill_list(){
$.ajax({
url:"mockdata/listdata",
type: "get",//使用get方法访问后台
dataType: "json",//返回json格式的数据
async:false,
//data: "pageIndex=" + pageIndex,//要发送的数据
complete :function(){$("#load").hide();},//AJAX请求完成时隐藏loading提示
success: function(msg){//msg为返回的数据，在这里做数据绑定
var encoded = $.toJSON(msg);
ret_code =$.evalJSON(encoded).code;
arr_dn =$.evalJSON(encoded).data;
if(ret_code == "200"){
render_dn_list(arr_dn);
}
else{
alert(ret_code);
}
}
});
}
// 为加载数据按钮注册事件
$(".load_flag").click(function(){
if(num <= maxnum){
fill_list();
num++;
}
else{
load_flag.find("#load_flag_info").css("display","block");
load_flag.find("#load_flag_button").css("display","none");
}
});
fill_list();
});{
"code":"200",
"data":[
{
"ID":"1",
"fid":"1212",
"userid":"1001",
"avatar":"images/user.png",
"type":"阅读注解",
"from":"金刚经/第一品 法会因由分",
"username":"用户名",
"signature":"用户个性签名",
"digest":"内容摘要内容摘。要内容摘要,要内容要内容",
"content":"时长老须菩提。在大众中。即从座起。偏袒右肩。右膝着地。合掌恭敬。而白佛言。希有世尊。如来善护念诸菩萨。善付嘱诸菩萨。世尊。善男子。善女人。发阿耨多罗三藐三菩提心。应云何住，云何降伏其心。佛言。善哉善哉。须菩提。如汝所说。如来善护念诸菩萨。善付嘱诸菩萨。汝今谛听。当为汝说。善男子。善女人。发阿耨多罗三藐三菩提心。应如是住，如是降伏其心。唯然。世尊。愿乐欲闻。",
"posttime":"2015-09-08 12:00:09",
"zan":"100"
},
{
"ID":"3",
"fid":"1212",
"userid":"1001",
"avatar":"images/user.png",
"type":"阅读注解",
"from":"金刚经/第一品 法会因由分",
"username":"用户名",
"signature":"用户个性签名",
"digest":"内容摘要内容摘。要内容摘要,要内容要内容",
"content":"不于一佛二佛三四五佛而种善根。已于无量千万佛所种诸善根。闻是章句。乃至一念生净信者。须菩提。如来悉知悉见。是诸众生。得如是无量福德。何以故。是诸众生无复我相。人相。众生相。寿者相。无法相。亦无非法相。何以故。是诸众生。若心取相。则为著我人众生寿者。若取法相。即著我人众生寿者。何以故。若取非法相，即著我人众生寿者。是故不应取法。不应取非法。",
"posttime":"2015-09-08 12:00:09",
"zan":"100"
},{
"code":"200",
"data":[
{
"ID":"100001",
"fid":"1212",
"userid":"1001",
"avatar":"images/user.png",
"username":"用户名",
"content":"时长老须菩提。善付嘱诸菩萨。汝今谛听。当为汝说。善男应如是住，如是降伏其心。唯然。世尊。愿乐欲闻。",
"posttime":"2015-09-08 12:00:09",
"zan":"100"
},
{
"ID":"100001",
"fid":"1212",
"userid":"1001",
"avatar":"images/user.png",
"username":"用户名",
"content":"时长老须菩提。善付嘱诸菩萨。汝今谛听。当为汝说。善男应如是住，如是降伏其心。唯然。世尊。愿乐欲闻。",
"posttime":"2015-09-08 12:00:09",
"zan":"100"
},
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Detailed explanation of jQuery reference methods: Quick start guide
Feb 27, 2024 pm 06:45 PM
Detailed explanation of jQuery reference method: Quick start guide jQuery is a popular JavaScript library that is widely used in website development. It simplifies JavaScript programming and provides developers with rich functions and features. This article will introduce jQuery's reference method in detail and provide specific code examples to help readers get started quickly. Introducing jQuery First, we need to introduce the jQuery library into the HTML file. It can be introduced through a CDN link or downloaded
How to use PUT request method in jQuery?
Feb 28, 2024 pm 03:12 PM
How to use PUT request method in jQuery? In jQuery, the method of sending a PUT request is similar to sending other types of requests, but you need to pay attention to some details and parameter settings. PUT requests are typically used to update resources, such as updating data in a database or updating files on the server. The following is a specific code example using the PUT request method in jQuery. First, make sure you include the jQuery library file, then you can send a PUT request via: $.ajax({u
How to remove the height attribute of an element with jQuery?
Feb 28, 2024 am 08:39 AM
How to remove the height attribute of an element with jQuery? In front-end development, we often encounter the need to manipulate the height attributes of elements. Sometimes, we may need to dynamically change the height of an element, and sometimes we need to remove the height attribute of an element. This article will introduce how to use jQuery to remove the height attribute of an element and provide specific code examples. Before using jQuery to operate the height attribute, we first need to understand the height attribute in CSS. The height attribute is used to set the height of an element
In-depth analysis: jQuery's advantages and disadvantages
Feb 27, 2024 pm 05:18 PM
jQuery is a fast, small, feature-rich JavaScript library widely used in front-end development. Since its release in 2006, jQuery has become one of the tools of choice for many developers, but in practical applications, it also has some advantages and disadvantages. This article will deeply analyze the advantages and disadvantages of jQuery and illustrate it with specific code examples. Advantages: 1. Concise syntax jQuery's syntax design is concise and clear, which can greatly improve the readability and writing efficiency of the code. for example,
jQuery Tips: Quickly modify the text of all a tags on the page
Feb 28, 2024 pm 09:06 PM
Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: <
Use jQuery to modify the text content of all a tags
Feb 28, 2024 pm 05:42 PM
Title: Use jQuery to modify the text content of all a tags. jQuery is a popular JavaScript library that is widely used to handle DOM operations. In web development, we often encounter the need to modify the text content of the link tag (a tag) on the page. This article will explain how to use jQuery to achieve this goal, and provide specific code examples. First, we need to introduce the jQuery library into the page. Add the following code in the HTML file:
How to tell if a jQuery element has a specific attribute?
Feb 29, 2024 am 09:03 AM
How to tell if a jQuery element has a specific attribute? When using jQuery to operate DOM elements, you often encounter situations where you need to determine whether an element has a specific attribute. In this case, we can easily implement this function with the help of the methods provided by jQuery. The following will introduce two commonly used methods to determine whether a jQuery element has specific attributes, and attach specific code examples. Method 1: Use the attr() method and typeof operator // to determine whether the element has a specific attribute
Understand the role and application scenarios of eq in jQuery
Feb 28, 2024 pm 01:15 PM
jQuery is a popular JavaScript library that is widely used to handle DOM manipulation and event handling in web pages. In jQuery, the eq() method is used to select elements at a specified index position. The specific usage and application scenarios are as follows. In jQuery, the eq() method selects the element at a specified index position. Index positions start counting from 0, i.e. the index of the first element is 0, the index of the second element is 1, and so on. The syntax of the eq() method is as follows: $("s
