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  • jQuery--修改表单数据并提交

    目的:

    ​点击‘编辑’,弹出对话框,修改数据。

    主要知识点:

    prevAll(),获取同级别本元素前面的所有元素。

    代码:
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    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title></title>
        <style>
            .modal{
                position: fixed;
                left:50%;
                top: 50%;
                 400px;
                height: 300px;
                background-color: #DDDDDD;
                margin-left: -200px;
                margin-top: -150px;
            }
            .hide{
                display: none;
            }
        </style>
    </head>
    <body>
        <table border="1">
            <thead></thead>
            <tbody>
                <tr>
                    <td>h1</td>
                    <td>192.168.1.1</td>
                    <td>111</td>
                    <td onclick="GetPrev(this)">编辑</td>
                </tr>
            <!--1.弹出框-->
            <!--2.取出表格数据-->
            <!--3.将数据填充到弹出框-->
                <tr>
                    <td>h2</td>
                    <td>192.168.1.2</td>
                    <td>222</td>
                    <td onclick="GetPrev(this)">编辑</td>
                </tr>
                <tr>
                    <td>h3</td>
                    <td>192.168.1.3</td>
                    <td>333</td>
                    <td onclick="GetPrev(this)">编辑</td>
                </tr>
            </tbody>
        </table>
        <div id="dialog" class="modal hide">
            <form action="" method="get">
                <p>主机名:<input type="text" id="hostname" /></p>
                <p>IP:<input type="text" id="ip" /></p>
                <p>端口:<input type="text" id="port" /></p>
                <input type="submit" value="提交" onclick="return SubmitForm()">
                <!--当onclick返回false,submit不进行提交。-->
                <input type="button" value="取消" onclick="Cancel()">
            </form>
        </div>
        <script type="text/javascript" src="jquery-2.1.4.min.js"></script>
        <script type="text/javascript">
            function GetPrev(arg){
                var list=[];
                $.each($(arg).prevAll(),function(i){
                    var item=$(arg).prevAll()[i];
                    //this
                    var text=$(item).text();
                    list.push(text);
                });
                var new_list=list.reverse();
                //在弹出框的hostname中设置值
                $('#hostname').val(new_list[0]);
                $('#ip').val(new_list[1]);
                $('#port').val(new_list[2]);
     
                $('#dialog').removeClass('hide');
            }
            function SubmitForm(){
                //获取form表单中的input值,判断是否为空;
                var ret=true;
                //遍历所有的input["type=text"],只要有空值,就将ret设置为false;
                $(':text').each(function(){
                    //$(this)=要循环的每一个元素
                    var value=$(this).val();
                    if(value.trim().length==0){
                        $(this).css('border-color','red');
                        alert("不能为空");
                        ret=false;
                    }else{
                        $(this).css('border-color','green');
                    }
                });
                return ret;
            }
            function Cancel(){
                $('#dialog').addClass('hide');
            }
        </script>
    </body>
    </html>
    效果:​



















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  • 原文地址:https://www.cnblogs.com/daliangtou/p/5205281.html
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