jQuery
Posted mike.liu
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主要内容:jQuery进阶、CSS伪类和伪元素、jQuery插件
tab菜单样式
checkbox全选、反选
位置:scrollTop和offset
事件:两种绑定事件的方式和委托delegate
ajax:普通和跨域(江西卫视的例子)
还是那个网址:http://www.php100.com/manual/jquery/
CSS伪类和伪元素
hover用于鼠标移动到元素上面时,改变元素的样式,比写JS实现方便。
.clearfix:after { content: "."; visibility: hidden; display: block; height: 0; clear: both; }
写到common.css文件中,在布局的时候用到float是,可以很方便的引用到需要clear:both的地方。
tab菜单样式
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>tab exercise</title> <style> .content { margin: 0 auto; padding: 0; } .tab-tittle { background-color: #999999; border: none; line-height: 35px; } /*利用伪元素实现clear:both*/ .tab-tittle:after { content: "."; visibility: hidden; height: 0; display: block; clear: both; } .tab-info { border: none; } .hide { display: none; } .current { background-color: #FFFFFF; border-top: 2px solid red; } li { display: inline; list-style: none; margin: 0; padding: 0 10px; cursor: pointer; float: left; } </style> </head> <body> <div class="content"> <div class="tab-tittle"> <ul> <li class="current" pointTo="info1" onclick="GoTab(this);">菜单一</li> <li pointTo="info2" onclick="GoTab(this);">菜单二</li> <li pointTo="info3" onclick="GoTab(this);">菜单三</li> </ul> </div> <div class="tab-info"> <div id="info1">内容一</div> <div id="info2" class="hide">内容二</div> <div id="info3" class="hide">内容三</div> </div> </div> <script src="../jquery-2.2.3.js"></script> <script> function GoTab(ths) { $(ths).addClass("current").siblings().removeClass("current"); var tmp = "#" + $(ths).attr("pointTo"); $(tmp).removeClass("hide").siblings().addClass("hide"); } </script> </body> </html>
checkbox全选、反选
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Check Box Exercise</title> </head> <body> <div> <button value="全选" onclick="CheckAll();">全选</button> <button value="取消" onclick="ClearAll();">取消</button> <button value="取消" onclick="ReverseAll();">反选</button> </div> <div> <table border="1"> <tr> <td><input type="checkbox" /></td> <td>123</td> <td>456</td> </tr> <tr> <td><input type="checkbox" /></td> <td>123</td> <td>456</td> </tr> <tr> <td><input type="checkbox" /></td> <td>123</td> <td>456</td> </tr> <tr> <td><input type="checkbox" /></td> <td>123</td> <td>456</td> </tr> </table> </div> <script src="../jquery-2.2.3.js"></script> <script> function CheckAll() { $("table :checkbox").prop("checked", true); } function ClearAll() { $("table :checkbox").prop("checked", false); } function ReverseAll() { var checkboxArray = $("table :checkbox"); // for (var i= 0;i<checkboxArray.length;i++) { // console.log(checkboxArray[i]); // } // console.log("==============================="); // for ( i in checkboxArray) { // console.log(checkboxArray[i]); // } // 反选的两种方法 // 方法一 $.each (checkboxArray, function(i, item) { console.log(item); var isChecked = $(item).prop("checked"); if (isChecked) { $(item).prop("checked", false); } else { $(item).prop("checked", true); } }); // 方法二 // $("table :checkbox").each(function() { // var isChecked = $(this).prop("checked"); // if (isChecked) { // $(this).prop("checked", false); // } else { // $(this).prop("checked", true); // } // }) } </script> </body> </html>
位置:scrollTop和offset
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>scrollTop</title> <style> .go-top { position: fixed; right: 5px; bottom: 5px; width: 70px; height: 20px; background-color: #8AC007; } a { cursor: pointer; text-decoration: none; } .hide { display: none; } </style> </head> <body> <div style=" height: 300px; overflow: scroll"> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <p>111</p> <div style="right: 10px; bottom: 10px"> <a onclick="GoTop();">内部返回顶部</a> </div> </div> <div style=" padding: 0px; color: rgb(0, 0, 255); line-height: 1.5 !important;">> <div style="height: 2000px"></div> <div class="go-top hide"> <a onclick="GoTop();">返回顶部</a> </div> </div> <script src="../jquery-2.2.3.js"></script> <script> function GoTop() { $(window).scrollTop(0); } window.onscroll = function() { if ($(window).scrollTop() > 100) { $(".go-top").removeClass("hide"); } else { $(".go-top").addClass("hide"); } } </script> </body> </html>
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> body{ margin: 0px; } img { border: 0; } ul{ padding: 0; margin: 0; list-style: none; } .clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; } .wrap{ width: 980px; margin: 0 auto; } .pg-header{ background-color: #303a40; -webkit-box-shadow: 0 2px 5px rgba(0,0,0,.2); -moz-box-shadow: 0 2px 5px rgba(0,0,0,.2); box-shadow: 0 2px 5px rgba(0,0,0,.2); } .pg-header .logo{ float: left; padding:5px 10px 5px 0px; } .pg-header .logo img{ vertical-align: middle; width: 110px; height: 40px; } .pg-header .nav{ line-height: 50px; } .pg-header .nav ul li{ float: left; } .pg-header .nav ul li a{ display: block; color: #ccc; padding: 0 20px; text-decoration: none; font-size: 14px; } .pg-header .nav ul li a:hover{ color: #fff; background-color: #425a66; } .pg-body{ } .pg-body .catalog{ position: absolute; top:60px; width: 200px; background-color: #fafafa; bottom: 0px; } .pg-body .catalog.fixed{ position: fixed; top:10px; } .pg-body .catalog .catalog-item.active{ color: #fff; background-color: #425a66; } .pg-body .content{ position: absolute; top:60px; width: 700px; margin-left: 210px; background-color: #fafafa; overflow: auto; } .pg-body .content .section{ height: 500px; } </style> </head> <body> <div class="pg-header"> <div class="wrap clearfix"> <div class="logo"> <a href="#"> <img src="http://core.pc.lietou-static.com/revs/images/common/logo_7012c4a4.pn"> </a> </div> <div class="nav"> <ul> <li> <a href="#">首页</a> </li> <li> <a href="#">功能一</a> </li> <li> <a href="#">功能二</a> </li> </ul> </div> </div> </div> <div class="pg-body"> <div class="wrap"> <div class="catalog"> <div class="catalog-item" auto-to="function1"><a>第1章</a></div> <div class="catalog-item" auto-to="function2"><a>第2章</a></div> <div class="catalog-item" auto-to="function3"><a>第3章</a></div> </div> <div class="content"> <div menu="function1" class="section"> <h1>第一章</h1> </div> <div menu="function2" class="section"> <h1>第二章</h1> </div> <div menu="function3" class="section"> <h1>第三章</h1> </div> </div> </div> </div> <script src="../jquery-2.2.3.js"></script> <script> window.onscroll = function() { var scrollHeight = $(window).scrollTop(); console.log("滚动高度:"); console.log(scrollHeight); if (scrollHeight > 50) { $(".catalog").addClass("fixed"); } else { $(".catalog").removeClass("fixed"); } $(".content").children().each(function() { // 当前元素的对视图的相对高度 var currentOffset = $(this).offset(); var currentOffsetTop = currentOffset.top; console.log("当前元素的对视图的相对高度:"); console.log(currentOffsetTop); var totalHeight = currentOffsetTop + $(this).height(); if (currentOffsetTop < scrollHeight && totalHeight > scrollHeight) { // 滑轮滚动的高度+window的高度 = 文档的高度 if ($(window).scrollTop() + $(window).height() == $(document).height()) { $(".catalog").children(":last").css("fontSize", "48px").siblings().css("fontSize", "12px"); } else { var catalogTag = $(this).attr("menu"); var tagat = "div[auto-to=\'"+catalogTag+"\']"; $(".catalog").children(tagat).css("fontSize", "48px").siblings().css("fontSize", "12px"); return; } } }) } </script> </body> </html>
事件:两种绑定事件的方式和委托delegate
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>event exercise</title> </head> <body> <div> <input type="button" value="增加" /> <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> <li>6</li> </ul> </div> <script src="../jquery-2.2.3.js"></script> <script> $(function() { $("input").click(function() { $("ul").append("<li>8</li>"); }) }); // $(document).ready(function() { // $("li").css("cursor", "pointer"); // $("li").click(function() { // console.log($(this).text()); // alert($(this).text()) // }) // }); // $(function() { // $("li").bind("click", function(){ // alert($(this).text()); // }) // }); $(function() { $("ul").delegate("li", "click", function() { alert($(this).text()); }) }); </script> </body> </html>
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>move exercise</title> </head> <body> <div style="border: 1px solid #ddd;width: 600px;position: absolute;"> <div id="title" style="height: 40px;color: white;"> 标题 </div> <div style="height: 300px;"> 内容 </div> </div> <script src="../jquery-2.2.3.js"></script> <script> $(function() { $("#title").mouseover(function() { $(this).css("cursor", "move"); }).mousedown(function(e) { var _event = e || window.event; var old_x = _event.clientX; var old_y = _event.clientY; var parent_old_x = $(this).parent().offset().left; var parent_old_y = $(this).parent().offset().top; // 绑定鼠标拖动的事件 $(this).bind("mousemove", function(e) { var _new_event = e || window.event; var new_x = _new_event.clientX; var new_y = _new_event.clientY; var x = new_x - old_x; var y = new_y - old_y; var parent_new_x = parent_old_x + x; var parent_new_y = parent_old_y + y; $(this).parent().css("left", parent_new_x+"px"); $(this).parent().css("top", parent_new_y+"px"); }) }).mouseup(function() { $(this).unbind("mousemove"); }); }); </script> </body> </html>
ajax:普通和跨域(江西卫视的例子)
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>AJAX 跨域</title> </head> <body> <div> <input type="button" value="获取节目" onclick="GetInfo();"/> </div> <div id="container"> </div> <script src="../jquery-2.2.3.js"></script> <script> function GetInfo() { $.ajax({ url: "http://www.jxntv.cn/data/jmd-jxtv2.html", data: {}, type: "GET", dataType: "jsonp", jsonpCallback: "list", success: function(arg) { console.log(arg); var jsonpArray = arg.data; $.each(jsonpArray, function(k, v) { var week = v.week; var temp = "<h1>" + week + "</h1>"; $("#container").append(temp); var infoArray = v.list; $.each(infoArray, function(kk, vv) { var infoLink = vv.link; var infoName = vv.name; var temp_2 = "<a href=\'" + infoLink+"\'>" + infoName + "</a><br/>"; $("#container").append(temp_2); }) }) }, error: function(arg) { // 请求错误之后,自动执行的函数 } }) } </script> </body> </html>
jQuery插件
1、验证
a. 获取内容,正则表达式
b. return false
--> parsleyjs
http://parsleyjs.org/
--> jQuery Validate
http://jqueryvalidation.org/
# 不建议,直接使用 # 自己写, ==> 实现自己的定制化,以后自己写项目都可以用
2、UI
--> bxslider
http://bxslider.com/
--> Font Awesome
http://fontawesome.io/
a、图片,自己找图片,挖洞
b、现成的图标
css
使用样式
--以前版本
css
图片库
使用样式
-- 现在
css
字体文件
使用样式
c、css
字体文件
样式
=====> 大图片
--> Bootstrap
http://www.bootcss.com/
--> jQuery EasyUI
http://www.jeasyui.com/download/index.php
--> jQuery UI
http://jqueryui.com/
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