0

我正在使用以下代码来动态添加另一个输入文本框。我遇到的问题是，当我序列化数据并将其传递给我的 php 脚本时，添加的输入文本框中的数据没有显示。

任何想法我做错了什么？

谢谢

代码

<div class="control-group" id="ports">
<label class="control-label" for="dataport1">dataport</label>
<div class="controls">
    <input type="text" id="dataport_1" name="dataport_1" placeholder="Type something">
</div> <!-- end controls -->
</div><!-- end control-group-->
<div class>
    <a class="btn btn-primary pull-right" id="addportbtn">Add Another Port</a>
</div>

查询脚本

function addPorts()
{

    var count = 2;
    var numports = 2;
    var idnum;

    $('#addportbtn').click(function() {
    //alert(count);
    numports = idnum;
    var addHtml =   '<div class="control-group">' +
            '<label class="control-label" for="dataports">data port</label>'+
            '<div class="controls">'+
            '<input type="text" id="dataport_idnum" placeholder="Type something">'+
            '</div> <!-- end controls -->'+
            '</div><!-- end cotrol-group-->'
        $( "#ports:last" ).after(addHtml);

        numports = numports + 1;
        count++;

    }); //end click
}
4

1 回答 1

2

此代码存在多个问题。我将从html开始：

<div class="control-group" id="ports">
<label class="control-label" for="dataport1">dataport</label>
<!--                                      ^ no underscore, which means this won't work correctly -->
<div class="controls">
    <input type="text" id="dataport_1" name="dataport_1" placeholder="Type something">
</div> <!-- end controls -->
</div><!-- end control-group-->
<div class>
<!-- ^ the class attribute without a value.  While it may not cause parsing issues, its good to fix this anyway if you aren't going to use it -->
    <a class="btn btn-primary pull-right" id="addportbtn">Add Another Port</a>
</div>

现在的javascript：

function addPorts()
{

    var count = 2;    //  Every single one of these variables is local to the function
    var numports = 2; //  And thus cannot be accessed, and are re-initialized
    var idnum;        //  every time the function is called
    //   ^ this variable is not incremented, so it will always be undefined
    $('#addportbtn').click(function() { // and on that note, every time addPorts()
    //alert(count);                     // called, it attaches another click
    numports = idnum;                   // handler
    var addHtml =   '<div class="control-group">' +
            '<label class="control-label" for="dataports">data port</label>'+ //this label won't attach to the input, as there is no input with the id of 'dataports'
            '<div class="controls">'+
            '<input type="text" id="dataport_idnum" placeholder="Type something">'+ //idnum is not parsed, strings are not parsed into variables.  You must escape them first.
            '</div> <!-- end controls -->'+
            '</div><!-- end cotrol-group-->'
        $( "#ports:last" ).after(addHtml);

        numports = numports + 1; //again, variables are local to function, so doing this doesn't do anything
        count++;                 // is pointless, isn't used.

    }); //end click
}

而现在，修复...

如下链接的 serialize 方法通常应用于表单，而不是 div。

<form id="ports">
    <div class="control-group">
        <label class="control-label" for="dataport_1">data port</label>
        <div class="controls">
            <input type="text" id="dataport_1" name="dataport_1" placeholder="Type something" />
        </div>
        <!-- end controls -->
    </div>
    <!-- end control-group-->
    <div> <a class="btn btn-primary pull-right" id="addportbtn">Add Another Port</a>

    </div>
</form>

jQuery 的.serialize()方法从元素的 name 属性中运行，因此要使其工作，必须指定它：

var numports = 2; // make variable global, so it can be accessed by any function
$(function () { //execute on dom ready, so events are bound correctly.
    $('#addportbtn').click(function () {
        var addHtml = '<div class="control-group">' +
            '<label class="control-label" for="dataport_' + numports + '">data port</label>' +
            '<div class="controls">' +
            '<input type="text" id="dataport_' + numports + '" name="dataport_' + numports + '" placeholder="Type something"/>' +
                                                       //        ^ name specified
            '</div> <!-- end controls -->' +
            '</div><!-- end cotrol-group-->'
        $("#ports .control-group:last").after(addHtml);
        numports++;
    });
});

现在，当表单被序列化时，它将正确添加相关的输入字段。

这是一个工作演示。

于 2013-08-24T03:18:03.660 回答