一、查找元素
1、选择器
1.1 基本选择器 $("*") $("#id") $(".class") $("element") $(".class,p,div")
1.2层级选择器 $(".outer div")(所有的后代) $(".outer>div")(所有的子代) $(".outer+div")(匹配所有跟在.outer后面的div)
$(".outer~div")(.outer后面的所有div)
1.3 基本筛选器 $("li:first") $("li:eq(2)") $("li:even")(偶数) $("li:gt(1)")
1.4 属性选择器 $('[id="div1"]') $('["alex="sb"][id]')
1.5 表单选择器 $("[type='text']") 简写成 $(":text") 注意只适用于input标签
2 筛选器
2.1 过滤筛选器
$("li").eq(2) $("li").first() $("ul li").hasclass("test") (检测li中的是否含有某个特定的类,有的话返回true)
2.2 查找筛选器
$("div").children(".test")(只考虑子元素,而不考虑所有的后代) $("div").find(".test") (考虑所有的后代)
$(".test").next() $(".test").nextAll() $(".test").nextUntil() (开区间)
$("div").prev() $("div").prevAll() $("div").prevUntil()
$(".test").parent() $(".test").parents()(祖先元素集合) $(".test").parentUntil()
$("div").siblings() (同辈元素不包括自己)
二、操作元素
1 属性操作
$("p").text() $("p").html() $(":checkbox").val()
$(".test").attr("alex") $(".test").attr("alex","sb")
$(".test").attr("checked","checked") $(":checkbox").removeAttr("checked")
$(".test").prop("checked",true)
$(".test").addClass("hide")
2 CSS操作
(样式) css("{color:'red',backgroud:'blue'}")
(位置) offset() position() scrollTop() scrollLeft()
(尺寸) innerHeight()不包含边框, outerHeight()包含边框, 两个都包含padding height()不包含边框
3 文档处理
内部插入 $("#c1").append("<b>hello</b>") $("p").appendTo("div")
prepend() prependTo()
外部插入 before() insertBefore() after() insertAfter()
replaceWith() remove() empty() clone()
4 事件
4.1
$(document).ready(function(){}) -----------> $(function(){}) 最好都加上这一句(所有文档执行完,但是图片没加载)
4.2
$("p").click(function(){})
$("p").bind("click",function(){})
$("ul").delegate("li","click",function(){}) // 事件委托,这里需要重点注意下
三、jquery所有示例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>leftMenu</title>
<script src="../jquery-1.12.4.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
.outer {
}
.menu {
20%;
background-color: blueviolet;
float: left;
}
.content {
80%;
height: 500px;
background-color: blue;
float: left;
}
.active {
background-color: chartreuse;
color: white;
}
.hide {
display: none;
}
</style>
</head>
<body>
<div class="outer">
<div class="menu">
<div class="item">
<div itemcon="1" class="title active" >菜单一</div>
<div class="con">
<div>111</div>
<div>111</div>
<div>111</div>
</div>
</div>
<div class="item">
<div itemcon="2" class="title" >菜单二</div>
<div class="con hide">
<div>222</div>
<div>222</div>
<div>222</div>
</div>
</div>
<div class="item">
<div itemcon="3" class="title" >菜单三</div>
<div class="con hide">
<div>333</div>
<div>333</div>
<div>333</div>
</div>
</div>
</div>
<div class="content">
<div id="1">content1</div>
<div id="2" class="hide">content2</div>
<div id="3" class="hide">content3</div>
</div>
</div>
<script>
$(function () {
$(".item .title").click(function () { //绑定事件
$(this).addClass('active').siblings().removeClass('hide');
$(this).parent().siblings().find('.con').addClass('hide');
$(this).parent().siblings().find('.title').removeClass('active');
//下面操作对应点击哪项菜单显示相应内容
var con = $(this).attr('itemcon');
$("#" + con).removeClass('hide').siblings().addClass('hide'); //为什么要拼接
})
});
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-1.12.4.js"></script>
</head>
<body>
<button id="selectAll">全选</button>
<button id="reverseAll">反选</button>
<button id="cancleAll">取消</button>
<table>
<tr>
<td><input type="checkbox"></td>
<td>1111</td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>1111</td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>1111</td>
</tr>
</table>
<script>
$(function () {
$("#selectAll").click(function () {
$("table :checkbox").prop('checked',true)
});
$("#cancleAll").click(function () {
$("table :checkbox").prop('checked',false)
});
$("#reverseAll").click(function () {
$("table :checkbox").each(function () {
if($(this).prop('checked')){
$(this).prop('checked',false);
}else {
$(this).prop('checked',true);
}
});
})
});
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
padding: 0;
}
.container{
background-color: cornflowerblue;
100%;
}
.content{
background-color: aqua;
min-height: 1000px;
800px;
margin: 0 auto;
}
.retTop{
35px;
height: 35px;
position: fixed;
right: 0;
bottom: 0;
background-color: chartreuse;
}
.hide{
display: none;
}
</style>
<script src="jquery-1.12.4.js"></script>
</head>
<body>
<div class="container">
<div class="content"></div>
<div class="retTop">
返回顶部
</div>
</div>
<script>
$(function () {
window.onscroll = function () {
var scrollHeight = $(window).scrollTop();
if(scrollHeight<100){
$(".retTop").addClass('hide');
}else {
$(".retTop").removeClass('hide')
}
};
$(".retTop").click(function () {
$(window).scrollTop(0);
})
})
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-1.12.4.js"></script>
<style>
*{
margin: 0;
border: 0;
}
.header{
100%;
height: 50px;
background-color: black;
}
.container{
960px;
margin: 0 auto;
/*position: relative;*/
}
.leftmenu{
250px;
min-height: 400px;
background-color: chartreuse;
position: absolute; // 想下为什么不能用relative
left: 200px;
top: 50px;
}
.content{
600px;
min-height: 900px;
background-color: cornflowerblue;
position: absolute;
left: 382px;
top:50px;
}
ul{
list-style: none;
}
.content div{
height: 800px;
border: 1px solid black;
}
.fixed{
position: fixed;
top:0;
}
</style>
</head>
<body>
<div class="header"></div>
<div class="container">
<div class="leftmenu">
<ul>
<li id="item1">第一章</li>
<li id="item2">第二章</li>
<li id="item3">第三章</li>
</ul>
</div>
<div class="content">
<div class="item1">111</div>
<div class="item2">222</div>
<div class="item3" style="height: 100px">333</div>
</div>
</div>
<script>
$(function () {
window.onscroll = function () {
var scrollHeight = $(window).scrollTop();
if(scrollHeight>50){
$(".leftmenu").addClass('fixed');
}else {
$(".leftmenu").removeClass('fixed');
}
$('.content').children().each(function () {
if(scrollHeight>$(this).offset().top){
var iditem = $(this).attr("class");
console.log($(this));
$("#"+iditem).css("fontSize","40px").siblings().css("fontSize","12px");
}
console.log(scrollHeight,$(this).offset().top,$(this).outerHeight(),$(window).height());
});
if(scrollHeight+$(window).height() ==$(".content div:last-child").offset().top +$(".content div:last-child").outerHeight()){
$("ul li:last-child").css("fontSize","40px").siblings().css("fontSize","12px");
}
};
})
</script>
</body>
</html>
@charset "utf-8"; /* CSS Document */ .center_area{ 100%; height:500px; margin:0 auto; } /*中间区域*/ .center_area .center{ 100%; height:500px; background:#ccc; float: left; } .common_da{ 800px; height: 100px;} .center_area .center .center_top{ 100%; height:440px; /*background: orange;*/ } /*<==================================================>*/ /*中间轮播图区域*/ .content_middle{ height:500px; margin:0 auto; position:relative; /*border: 1px solid #ccc;*/ } .content_middle:hover .common{ display: block; } /*左右切换图标*/ .content_middle .common{ display: block; 50px; height: 100px; position: absolute; z-index:10; top:60%; margin-top: -50px; display: none; } .content_middle .btnLeft{ opacity: 0.2; left:0; background: url(../images/sprite.png) no-repeat; } .content_middle .btnRight{ opacity: 0.2; right:0; background: url(../images/sprite.png) no-repeat -60px 0; } .content_middle .btnLeft:hover,.content_middle .btnRight:hover{ opacity: 0.5; } /*左右切换图标*/ .content_middle ul li{ 100%; height:440px; opacity: 0; /*filter: alpha(opacity=0);*/ position: absolute; margin:0 auto; } /*切换小图标*/ .content_middle .table{ 260px; line-height:40px; position: absolute; bottom:30px; left:50%; margin-left:-130px; } .content_middle .table a{ 20px; height:20px; background:#E3DEE1; opacity: 0.8; margin-left:20px; display: block; float:left; border-radius: 50%; } .content_middle .table a.small_active{ background:red; color: #fff; }
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8" >
<title>jQuery轮播</title>
<!-- 页面css样式 -->
<link rel="stylesheet" href="css/index.css" />
<!-- js文件 -->
<script src="js/jquery-3.1.1.js"></script>
<script src="js/index.js"></script>
<style>
*{margin: 0;padding: 0}
ul{list-style: none;}
</style>
</head>
<body>
<div class="center">
<div class="center_top">
<div class="content_middle">
<div class="common_da">
<a class="common btnLeft"></a>
<a class="common btnRight"></a>
</div>
<ul>
<li style="background:url(images/1.jpg) no-repeat center center;opacity: 1"></li>
<li style="background:url(images/2.jpg) no-repeat center center;"></li>
<li style="background:url(images/3.jpg) no-repeat center center;"></li>
<li style="background:url(images/4.jpg) no-repeat center center;"></li>
<li style="background:url(images/5.jpg) no-repeat center center;"></li>
<li style="background:url(images/6.jpg) no-repeat center center;"></li>
</ul>
<div class="table">
<a class="small_active"href="javascript:;"></a>
<a href="javascript:;"></a>
<a href="javascript:;"></a>
<a href="javascript:;"></a>
<a href="javascript:;"></a>
<a href="javascript:;"></a>
</div>
</div>
</div>
</div>
</body>
</html>
$(function(){ // 轮播图开始 var left = $('.content_middle .btnLeft');//获取左点击 var right = $('.content_middle .btnRight');//获取右点击 var aSmall = $('.content_middle .table a'); var aLi = $('.content_middle ul li'); var iNow = 0; // 左点击 left.click(function(){ iNow--; if(iNow<0){ iNow=5; } move() }); // 右点击切换 right.click(function(){ iNow++; if(iNow>5){ iNow=0; } move() }); //手动切换 aSmall.mouseover(function(){ var n = $(this).index(); // var iNow = $(this).index(); // alert(iNow); iNow = n; move() }); // 封装函数体 function move(){ aLi.eq(iNow).siblings().stop().animate({ opacity:0 },1000); aLi.eq(iNow).stop().animate({ opacity:1 },1000); aSmall.eq(iNow).addClass('small_active').siblings().removeClass('small_active'); } // 定个定时器的初始值 function run(){ iNow++; if(iNow>5){ iNow=0; } move(); } // 定时器 timer = setInterval(run,2000); //当鼠标划入,停止轮播图切换 $(".content_middle").hover(function(){ clearInterval(timer); },function(){ timer = setInterval(run,2000); }) });
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
padding: 0;
}
ul{
list-style: none;
}
.outer{
position: relative;
310px;
height: 310px;
margin: 20px auto;
}
.image{
position: relative;
}
.image img{
height: 310px;
310px;
position: absolute;
border: dashed blue 1px;
top: 0;
left: 0;
}
.num{
position: absolute;
bottom:0;
left:100px;
}
.num li{
display: inline-block;
height: 20px;
20px;
/*background-color: #3c763d;*/
border-radius: 50%;
text-align: center;
line-height: 20px;
cursor: pointer;
}
.position{
310px;
position: absolute;
top:50%;
margin-top: -15px;
left: 0;
}
.position button{
display: block;
30px;
height: 30px;
background-color:burlywood ;
opacity: 0.6;
border: 0;
display: none;
}
.outer:hover .position button{
display: block;
}
.left{
float: left;
}
.right{
float: right;
}
.active{
background-color: black;
}
</style>
<script src="jquery-1.12.4.js"></script>
<script>
$(function () {
$(".num li").first().addClass("active");
console.log( $(".num li"));
$(".num li").mouseover(function () {
console.log(this);
$(this).addClass("active").siblings().removeClass("active");
var index = $(this).index();
i = index;
$(".image img").eq(index).fadeIn(1000).siblings().fadeOut(1000);
});
var i = 0;
function autoMove() {
$(".num li").eq(i).addClass("active").siblings().removeClass("active");
$(".image img").eq(i).stop().fadeIn(1000).siblings().stop().fadeOut(1000);
i++;
if(i==5){
i = 0;
}
}
var t1 = setInterval(autoMove,1000);
$(".outer").hover(function () {
clearInterval(t1);
},function () {
t1 = setInterval(autoMove,1000);
});
$(".right").click(function () {
autoMove();
});
$(".left").click(function () {
i--;
if(i==-1){
i = 4;
}
$(".num li").eq(i).addClass("active").siblings().removeClass("active");
$(".image img").eq(i).stop().fadeIn(1000).siblings().stop().fadeOut(1000);
})
})
</script>
</head>
<body>
<div class="outer">
<div class="image">
<img src="pic/a.png">
<img src="pic/1.jpeg">
<img src="pic/2.jpeg">
<img src="pic/3.jpeg">
<img src="pic/4.jpeg">
</div>
<div class="num">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</div>
<div class="position">
<button class="left"> < </button>
<button class="right"> > </button>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<style>
* {
margin: 0;
padding: 0;
}
.hide {
display: none;
}
.header-nav {
height: 39px;
background: #c9033b;
}
.header-nav .bg {
background: #c9033b;
}
.header-nav .nav-allgoods .menuEvent {
display: block;
height: 39px;
line-height: 39px;
text-decoration: none;
color: #fff;
text-align: center;
font-weight: bold;
font-family: 微软雅黑;
color: #fff;
100px;
}
.header-nav .nav-allgoods .menuEvent .catName {
height: 39px;
line-height: 39px;
font-size: 15px;
}
.header-nav .nav-allmenu a {
display: inline-block;
height: 39px;
vertical-align: top;
padding: 0 15px;
text-decoration: none;
color: #fff;
float: left;
}
.header-menu a {
color: #656565;
}
.header-menu .menu-catagory {
position: absolute;
background-color: #fff;
border-left: 1px solid #fff;
height: 316px;
230px;
z-index: 4;
float: left;
}
.header-menu .menu-catagory .catagory {
border-left: 4px solid #fff;
height: 104px;
border-bottom: solid 1px #eaeaea;
}
.header-menu .menu-catagory .catagory:hover {
height: 102px;
border-left: 4px solid #c9033b;
border-bottom: solid 1px #bcbcbc;
border-top: solid 1px #bcbcbc;
}
.header-menu .menu-content .item {
margin-left: 230px;
position: absolute;
background-color: white;
height: 314px;
500px;
z-index: 4;
float: left;
border: solid 1px #bcbcbc;
border-left: 0;
box-shadow: 1px 1px 5px #999;
}
</style>
<body>
<div class="pg-header">
<div class="header-nav">
<div class="container narrow bg">
<div class="nav-allgoods left">
<a id="all_menu_catagory" href="#" class="menuEvent">
<strong class="catName">全部商品分类<>
<span class="arrow" style="display: inline-block;vertical-align: top;"></span>
</a>
</div>
</div>
</div>
<div class="header-menu">
<div class="container narrow hide">
<div id="nav_all_menu" class="menu-catagory">
<div class="catagory" float-content="one">
<div class="title">家电</div>
<div class="body">
<a href="#">空调</a>
</div>
</div>
<div class="catagory" float-content="two">
<div class="title">床上用品</div>
<div class="body">
<a href="http://www.baidu.com">床单</a>
</div>
</div>
<div class="catagory" float-content="three">
<div class="title">水果</div>
<div class="body">
<a href="#">橘子</a>
</div>
</div>
</div>
<div id="nav_all_content" class="menu-content">
<div class="item hide" float-id="one">
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="勺子">勺子</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="菜刀">菜刀</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#">菜板</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="碗">碗</a> </span>
</dd>
<>
</div>
<div class="item hide" float-id="two">
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="">角阀</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="角阀">角阀</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="角阀">角阀</a> </span>
</dd>
<>
</div>
<div class="item hide" float-id="three">
<dl>
<dt><a href="#" class="red">厨房用品3</a></dt>
<dd>
<span>| <a href="#" target="_blank" title="角阀">角阀3</a> </span>
</dd>
<>
<dl>
<dt><a href="#" class="red">厨房用品3</a></dt>
<dd>
<span>| <a href="http://www.meilele.com/category-jiaofa/
" target="_blank" title="角阀">角阀3</a> </span>
</dd>
<>
</div>
</div>
</div>
</div>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
$(function () {
init("#all_menu_catagory","#nav_all_menu","#nav_all_content");
});
function init(mFirst,mSecond,mThird) {
$(mFirst).mouseover(function () {
$(mSecond).parent().removeClass('hide');
});
$(mFirst).mouseout(function () {
$(mSecond).parent().addClass('hide');
});
$(mSecond).children().mouseover(function () {
$(mSecond).parent().removeClass('hide');
var floatvar = $(this).attr("float-content");
var floatstr = "[float-id=" + floatvar + "]";
$(mThird).find(floatstr).removeClass('hide').siblings().addClass('hide')
});
$(mSecond).mouseout(function () {
$(this).parent().addClass('hide');
$(mThird).children().addClass('hide');
});
$(mThird).children().mouseover(function () {
// $(mSecond).parent().removeClass('hide');
$(this).removeClass('hide')
});
$(mThird).children().mouseout(function () {
// $(mSecond).parent().addClass('hide');
$(this).addClass('hide')
})
}
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-1.12.4.js"></script>
<style>
table {
margin-top: 40px;
}
table, td {
border: 1px solid black;
}
a {
display: inline-block;
background-color: #bce8f1;
100px;
height: 21px;
text-decoration: none;
cursor: pointer;
}
.red {
background-color: red;
}
</style>
</head>
<body>
<button id="checkAll">全选</button>
<button id="checkReverse">反选</button>
<button id="checkCancle">取消</button>
<a id="edit_mode">进入编辑模式</a>
<table >
<thead>
<tr>
<th>选择</th>
<th>主机名</th>
<th>端口</th>
<th>状态</th>
</tr>
</thead>
<tbody id="tb">
<tr>
<td><input type="checkbox"></td>
<td edit="true">v1</td>
<td>88</td>
<td edit="true" edit_type="select" sel-val="1" global-key="STATUS">在线</td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td edit="true">v1</td>
<td>88</td>
<td edit="true" edit_type="select" sel-val="2" global-key="STATUS">下线</td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td edit="true">v1</td>
<td>88</td>
<td edit="true" edit_type="select" sel-val="1" global-key="STATUS">在线</td>
</tr>
</tbody>
</table>
<script>
$(function () {
main('#edit_mode','#tb');
});
STATUS = [
{'id': 1, 'value': "在线"},
{'id': 2, 'value': "下线"}
];
window.globalCtrlKeyPress = false;
function main(edit,tb) {
bindSingleCheck(edit,tb);
bindEditMode(edit,tb);
bindCheckAll(edit,tb);
bindCheckCancle(edit,tb);
bindCheckReverse(edit,tb);
}
function bindSingleCheck(edit,tb) {
$(tb).find(":checkbox").click(function () {
var $tr = $(this).parent().parent();
if($(edit).hasClass('editing')){
if($(this).prop('checked')){
RowIntoEdit($tr);
}else {
RowOutEdit($tr);
}
}
})
}
function bindEditMode(edit,tb) {
$(edit).click(function () {
if($(this).hasClass('editing')){
$(this).removeClass('editing red');
$(tb).children().each(function () {
var check_box = $(this).children().find(":checkbox");
if(check_box.prop('checked')){
RowOutEdit($(this));
}else {
}
});
}else {
$(this).addClass('editing red');
$(tb).children().each(function () {
var check_box = $(this).children().find(":checkbox");
if(check_box.prop('checked')){
RowIntoEdit($(this));
}else {
}
})
}
});
}
function bindCheckAll(edit,tb) {
$("#checkAll").click(function () {
if($(edit).hasClass("editing")){
$(tb).children().each(function () {
var check_box = $(this).children().find(":checkbox");
if(check_box.prop('checked')){
}else {
check_box.prop('checked',true);
RowIntoEdit($(this));
}
})
}else {
$(tb).find(':checkbox').prop('checked', true);
}
});
}
function bindCheckReverse(edit,tb) {
$("#checkReverse").click(function () {
if($(edit).hasClass("editing")){
$(tb).children().each(function () {
var check_box = $(this).children().find(":checkbox");
if(check_box.prop('checked')){
check_box.prop('checked',false);
RowOutEdit($(this));
}else {
check_box.prop('checked',true);
RowIntoEdit($(this));
}
})
}else {
$(tb).children().each(function(){
var check_box = $(this).children().find(':checkbox');
if(check_box.prop('checked')){
check_box.prop('checked',false);
}else{
check_box.prop('checked',true);
}
});
}
});
}
function bindCheckCancle(edit,tb) {
$("#checkCancle").click(function () {
if($(edit).hasClass("editing")){
$(tb).children().each(function () {
var check_box = $(this).children().find(":checkbox");
if(check_box.prop('checked')){
check_box.prop('checked',false);
RowOutEdit($(this));
}else {
}
})
}else {
$(tb).find(':checkbox').prop('checked',false);
}
});
}
function RowIntoEdit($tr) {
$tr.children().each(function () {
if($(this).attr('edit') == 'true'){
if($(this).attr('edit_type') == "select"){
var select_val = $(this).attr('sel-val');
var global_key = $(this).attr('global-key');
var selelct_tag = CreateSelect({"onchange": "MultiSelect(this);"}, {}, window[global_key], 'id', 'value', select_val);
$(this).html(selelct_tag);
}else {
var orgin_value = $(this).text();
var temp = "<input value='"+ orgin_value+"' />";
$(this).html(temp);
}
}
})
}
function RowOutEdit($tr) {
$tr.children().each(function () {
if($(this).attr('edit')=='true'){
if($(this).attr('edit_type') == "select"){
var new_val = $(this).children(':first').val();
var new_text = $(this).children(':first').find("option[value='"+new_val+"']").text();
$(this).attr('sel-val', new_val).text(new_text);
}else {
var orgin_value = $(this).children().first().val();
$(this).text(orgin_value);
}
}
})
}
function CreateSelect(attrs, csss, option_dict, item_key, item_value, current_val) {
var sel = document.createElement('select');
//设置属性
$.each(attrs,function (k,v) {
$(sel).attr(k,v);
});
//设置样式 这里为空,以后可以设置
$.each(csss,function (k,v) {
$(sel).css(k,v);
});
$.each(option_dict,function (k,v) {
var opt = document.createElement('option');
var sel_text = v[item_value];
var sel_value = v[item_key];
if(current_val == sel_value){
$(opt).text(sel_text).attr('value',sel_value).attr('selected','true').appendTo($(sel));
}else {
$(opt).text(sel_text).attr('value',sel_value).appendTo($(sel));
}
});
return sel;
}
window.onkeydown = function (e) {
if(e && e.keyCode == 17){
window.globalCtrlKeyPress = true;
}
};
window.onkeyup = function (e) {
if(e && e.keyCode == 17){
window.globalCtrlKeyPress = false;
}
};
function MultiSelect(ths) {
if(window.globalCtrlKeyPress == true){
var index = $(ths).parent().index();
var value = $(ths).val();
console.log(value,index);
$(ths).parent().parent().nextAll().find("td input[type='checkbox']:checked").each(function(){
$(this).parent().parent().children().eq(index).children().val(value);
});
}
}
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.inline {
display: inline-block;
}
</style>
</head>
<body>
<div class="container">
<div class="section">
<div class="button inline">
<a id="origin">
<button>+</button>
</a>
<div class="input inline">
<input type="checkbox">
<input type="text" value="IP">
</div>
</div>
</div>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
$(function () {
$("#origin").click(function () {
var origin = $(this).parent().parent().clone();
origin.find('a').removeAttr('id').attr("onclick", "myremove(this);").children().text('-');
$(".container").append(origin);
});
})
function myremove(self) {
console.log(11);
$(self).parent().parent().remove();
}
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
padding: 0;
}
.container{
position: relative;
}
.small-box{
border: 5px solid red;
height: 350px;
350px;
position: relative;
}
.big-box{
position: absolute;
400px;
height: 400px;
left:360px;
top:0;
border: 5px solid black;
overflow: hidden;
}
.hide{
display: none;
}
.small-box .float{
175px;
height: 175px;
background-color: grey;
position: absolute;
opacity: 0.8;
}
.big-box img{
position: absolute;
}
</style>
</head>
<body>
<div class="container">
<div class="small-box">
<div class="float hide"></div>
<img src="pic/small.jpg">
</div>
<div class="big-box hide">
<img src="pic/big.jpg">
</div>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
$(function () {
$(".small-box").mouseover(function () {
$(this).children('.float').removeClass('hide').parent().next().removeClass('hide');
});
$(".small-box").mouseout(function () {
$(this).children('.float').addClass('hide').parent().next().addClass('hide');
});
$(".float").mousemove( function (e) {
var _event = e || window.event;
var small_box_width = $(".small-box").width();
var small_box_height = $(".small-box").height();
var float_height = $('.float').height();
var float_width = $(".float").width();
var float_height_half = float_height/2;
var float_width_half = float_width/2;
var float_right = _event.clientX- float_width_half;
var float_top = _event.clientY - float_height_half;
if(float_right<0){
float_right = 0;
}else if(float_right>small_box_width-float_width){
float_right=small_box_width-float_width
}
if(float_top<0){
float_top=0;
}else if(float_top>small_box_height-float_height){
float_top=small_box_height-float_height
}
$(".float").css({"left":float_right+"px","top":float_top+"px"});
var percentX=($(".big-box img").width()-$(".big-box").width())/ (small_box_width-float_width);
var percentY=($(".big-box img").height()-$(".big-box").height())/(small_box_height-float_height);
$(".big-box img").css({"left":-percentX*float_right+"px","top":-percentY*float_top+"px"});
})
})
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div style="border: 1px solid #ddd; 600px;position: absolute;">
<div id="title" style="background-color: black;height: 40px;color: white;">
标题
</div>
<div style="height: 300px;">
内容
</div>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
$("#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_left = $(this).parent().offset().left;
var parent_top = $(this).parent().offset().top;
$(this).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 + parent_left;
var y = new_y - old_y + parent_top;
$(this).parent().css({"left":x+"px","top":y+"px"})
}).mouseup(function () {
$(this).unbind('mousemove');
})
})
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<p>111</p>
<p>222</p>
<p>333</p>
<script src="jquery-3.1.1.js"></script>
<script>
//方式一
// $.extend({
// print:function(){
// console.log('hello extend')
// }
// });
// $.print()
//方式二
$.fn.extend({
print:function(){
$(this).each(function () {
console.log($(this).html())
});
// console.log($(this).html())
}
});
$('p').print();
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-1.12.4.js"></script>
<script>
$(document).ready(function () {
$("button").click(function () {
$("p").hide(1000,call_back());
})
});
function call_back() {
alert('sss')
}
</script>
</head>
<body>
<button>隐藏</button>
<p>hello</p>
</body>
</html>