JQuery_案例

隔行换色

HTML代码

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <script src="../js/jquery-3.3.1.min.js"></script>
        <script>
            //需求:将数据行的奇数行背景色设置为pink 偶数行背景色设置为yellow
            $(function(){
                //1.获取数据行的奇数的tr 设置背景色为pink
                $("tr:gt(1):odd").css("backgroundColor","pink");
                //2.获取数据行的偶数行的tr 设置背景色为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="删除"></td>
                    </tr>
                    <tr style="background-color: #999999;">
                        <th><input type="checkbox"></th>
                        <th>分类ID</th>
                        <th>分类名称</th>
                        <th>分类描述</th>
                        <th>操作</th>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td>0</td>
                        <td>手机数码</td>
                        <td>手机数码类商品</td>
                        <td><a href="">修改</a>|<a href="">删除</a></td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td>1</td>
                        <td>电脑办公</td>
                        <td>电脑办公类商品</td>
                        <td><a href="">修改</a>|<a href="">删除</a></td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td>2</td>
                        <td>鞋靴箱包</td>
                        <td>鞋靴箱包类商品</td>
                        <td><a href="">修改</a>|<a href="">删除</a></td>
                    </tr>
                    <tr>
                        <td><input type="checkbox"></td>
                        <td>3</td>
                        <td>家居饰品</td>
                        <td>家居饰品类商品</td>
                        <td><a href="">修改</a>|<a href="">删除</a></td>
                    </tr>
                </table>
    </body>
</html>

 运行结果

 

 全选全不选

HTML代码

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>全选全不选</title>
        <script src="../js/jquery-3.3.1.min.js"></script>
        
        <script>
            //分析:需要保证下边的选中状态和第一个复选框的选中状态一致即可
            function selectAll(obj){
                //获取下边的复选框
                $(".itemSelect").prop("checked",obj.checked);
            }
        </script>
        
    </head>
    <body>
        <table id="tab1" border="1" width="800" align="center">
            <tr>
                <td colspan="5"><input type="button" value="删除"></td>
            </tr>
            <tr>
                <th><input type="checkbox" onclick="selectAll(this)"></th>
                <th>分类ID</th>
                <th>分类名称</th>
                <th>分类描述</th>
                <th>操作</th>
            </tr>
            <tr>
                <td><input type="checkbox" class="itemSelect"></td>
                <td>1</td>
                <td>手机数码</td>
                <td>手机数码类商品</td>
                <td><a href="">修改</a>|<a href="">删除</a></td>
            </tr>
            <tr>
                <td><input type="checkbox" class="itemSelect"></td>
                <td>2</td>
                <td>电脑办公</td>
                <td>电脑办公类商品</td>
                <td><a href="">修改</a>|<a href="">删除</a></td>
            </tr>
            <tr>
                <td><input type="checkbox" class="itemSelect"></td>
                <td>3</td>
                <td>鞋靴箱包</td>
                <td>鞋靴箱包类商品</td>
                <td><a href="">修改</a>|<a href="">删除</a></td>
            </tr>
            <tr>
                <td><input type="checkbox" class="itemSelect"></td>
                <td>4</td>
                <td>家居饰品</td>
                <td>家居饰品类商品</td>
                <td><a href="">修改</a>|<a href="">删除</a></td>
            </tr>
        </table>
    </body>
</html>

运行结果

 

 qq表情选择

HTML代码

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>qq表情选择</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:点击qq标签 将其追加到发言框中
            $(function(){
                //1.给img图片添加onclick事件
                $("ul img").click(function(){
                    //2.追加到p标签中即可
                    $(".word").append($(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>请发言:</strong>
                <img src="../img/12.gif" height="22" width="22" alt="" />
            </p>
        </div>
        
    </body>
</html>

运行结果

 

 左右移动

HTML代码

<!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>

            //需求:实现下拉列表选中条目左右选择功能
            
            $(function () {
                //toRight
                $("#toRight").click(function () {
                    //获取右边的下拉列表对象,append(左边下拉列表选中的option)
                    $("#rightName").append($("#leftName > option:selected"));
                });

                //toLeft
                $("#toLeft").click(function () {
                    //appendTo   获取右边选中的option,将其移动到左边下拉列表中
                    $("#rightName > option:selected").appendTo($("#leftName"));

                });
            });
            

        </script>



    </head>
    <body>
        <div class="border">
            <select id="leftName" multiple="multiple">
                <option>张三</option>
                <option>李四</option>
                <option>王五</option>
                <option>赵六</option>
            </select>
            <div id="btn">
                <input type="button" id="toRight" value="-->"><br>
                <input type="button" id="toLeft" value="<--">

            </div>

            <select id="rightName" multiple="multiple">
                <option>钱七</option>
            </select>

        </div>


    </body>
</html>
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本文链接:https://www.cnblogs.com/aimz01/p/16607389.html