案例一:隔行換色
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="../../js/jquery-3.3.1.min.js"></script>
<script>
//需求:將數據行的奇數行背景色設置爲 pink,偶數行背景色設置爲 yellow
$(function () {
//1.獲取奇數行的tr,背景色爲pink
$("tr:gt(1):odd").css("backgroundColor","pink");
//20.獲取偶數行的tr,背景色爲yellow
$("tr:gt(1):even").css("backgroundColor","yellow");
})
</script>
</head>
<body>
<table id="tab1" border="1" width="800" align="center" >
<tr>
<td colspan="5"><input type="button" value="刪除"></td>
</tr>
<tr style="background-color: #999999;">
<th><input type="checkbox"></th>
<th>分類ID</th>
<th>分類名稱</th>
<th>分類描述</th>
<th>操作</th>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>0</td>
<td>手機數碼</td>
<td>手機數碼類商品</td>
<td><a href="">修改</a>|<a href="">刪除</a></td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>1</td>
<td>電腦辦公</td>
<td>電腦辦公類商品</td>
<td><a href="">修改</a>|<a href="">刪除</a></td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>2</td>
<td>鞋靴箱包</td>
<td>鞋靴箱包類商品</td>
<td><a href="">修改</a>|<a href="">刪除</a></td>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>3</td>
<td>家居飾品</td>
<td>家居飾品類商品</td>
<td><a href="">修改</a>|<a href="">刪除</a></td>
</tr>
</table>
</body>
</html>
運行結果:
案例二:實現全選和全不選
<script>
//需要保證第下邊選中的狀態和第一個複選框一致即可
function selectAll(obj) {
$(".itemSelect").prop("checked",obj.checked);
}
</script>
案例三:QQ表情選擇
在保證原有表情不變的情況下,添加表情到發言中
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>QQ表情選擇</title>
<script src="../../js/jquery-3.3.1.min.js"></script>
<style type="text/css">
*{margin: 0;padding: 0;list-style: none;}
.emoji{margin:50px;}
ul{overflow: hidden;}
li{float: left;width: 48px;height: 48px;cursor: pointer;}
.emoji img{ cursor: pointer; }
</style>
<script>
//需求:點擊qq表情,將其追加到發言框中
$(function () {
//1.給圖片添加click事件
$("ul img").click(function () {
//2.追加到p標籤即可
$(".word").append($(this).clone());
});
})
</script>
</head>
<body>
<div class="emoji">
<ul>
<li><img src="img/01.gif" height="22" width="22" alt="" /></li>
<li><img src="img/02.gif" height="22" width="22" alt="" /></li>
<li><img src="img/03.gif" height="22" width="22" alt="" /></li>
<li><img src="img/04.gif" height="22" width="22" alt="" /></li>
<li><img src="img/05.gif" height="22" width="22" alt="" /></li>
<li><img src="img/06.gif" height="22" width="22" alt="" /></li>
<li><img src="img/07.gif" height="22" width="22" alt="" /></li>
<li><img src="img/08.gif" height="22" width="22" alt="" /></li>
<li><img src="img/09.gif" height="22" width="22" alt="" /></li>
<li><img src="img/10.gif" height="22" width="22" alt="" /></li>
<li><img src="img/11.gif" height="22" width="22" alt="" /></li>
<li><img src="img/12.gif" height="22" width="22" alt="" /></li>
</ul>
<p class="word">
<strong>請發言:</strong>
<img src="img/12.gif" height="22" width="22" alt="" />
</p>
</div>
</body>
</html>
運行結果:
案例四:左右移動
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="../../js/jquery-3.3.1.min.js"></script>
<style>
#leftName , #btn,#rightName{
float: left;
width: 100px;
height: 300px;
}
#toRight,#toLeft{
margin-top:100px ;
margin-left:30px;
width: 50px;
}
.border{
height: 500px;
padding: 100px;
}
</style>
<script>
$(function () {
//需求:實現下拉列表選擇條目左右選擇功能
$("#toRight").click(function () {
//獲取右邊的下拉列表對象,apend左邊選中的
$("#rightName").append($("#leftName > option:selected"));
});
$("#toLeft").click(function () {
$("#rightName > option:selected").appendTo($("#leftName"));
});
})
</script>
</head>
<body>
<div class="border">
<select id="leftName" multiple="multiple">
<option>張三</option>
<option>李四</option>
<option>王五</option>
<option>趙六</option>
</select>
<div id="btn">
<input type="button" id="toRight" value="-->">
<input type="button" id="toLeft" value="<--">
</div>
<select id="rightName" multiple="multiple">
<option>錢七</option>
</select>
</div>
</body>
</html>
運行結果: