如何在表单中动态添加/删除2个或更多字段

Question

我希望按要求动态添加和删除表单中的两个或多个字段。 举例来说，一个人可以拥有多个电话号码和多个电子邮件地址。 这个想法是让用户添加多个电话号码和电子邮件地址（如果有的话）

下面是我所做的（仅是一个粗略的示例）

 $(document).ready(function() { var max_fields = 10; var wrapper = $(".container1"); var add_button = $(".add_form_field"); var x = 0; $(add_button).click(function(e){ e.preventDefault(); if(x < max_fields){ x++; $(wrapper).append('<div><input type="text" name="mytext[' + x + ']"/><a href="#" class="delete">Delete</a></div>'); //add input box } else { alert('You Reached the limits') } }); $(wrapper).on("click",".delete", function(e){ e.preventDefault(); $(this).parent('div').remove(); x--; }) }); $(document).ready(function() { var max_fields = 10; var wrapper = $(".container2"); var add_button = $(".add_form_field_1"); var x = 0; $(add_button).click(function(e){ e.preventDefault(); if(x < max_fields){ x++; $(wrapper).append('<div><input type="text" name="text[' + x + ']"/><a href="#" class="delete">Delete</a></div>'); //add input box } else { alert('You Reached the limits') } }); $(wrapper).on("click",".delete", function(e){ e.preventDefault(); $(this).parent('div').remove(); x--; }) }); //I repeated the javascript for the first field which was this $(document).ready(function() { var max_fields = 10; var wrapper = $(".container1"); var add_button = $(".add_form_field"); var x = 0; $(add_button).click(function(e){ e.preventDefault(); if(x < max_fields){ x++; $(wrapper).append('<div><input type="text" name="mytext[' + x + ']"/><a href="#" class="delete">Delete</a></div>'); //add input box } else { alert('You Reached the limits') } }); $(wrapper).on("click",".delete", function(e){ e.preventDefault(); $(this).parent('div').remove(); x--; }) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container1"> <button class="add_form_field">Add New Field &nbsp; <span style="font-size:16px; font-weight:bold;">+ </span></button> <div> <input type="text" name="mytext[]"> </div> </div> <div class="container2"> <button class="add_form_field_1">Add New Field &nbsp; <span style="font-size:16px; font-weight:bold;">+ </span></button> <div> <input type="text" name="text[]"> </div> </div> 

还有JsFiddle 。

我不是javascript编码人员，因此不知道这是您的工作方式还是更好的方法。

附言：一个小时前我问了同样的问题，不得不重新表述，因为这引起了混乱。

Answer 1

您可以简单地编写很多代码，请检查以下内容：

 $(document).ready(function() { $("button.add_form_field").click(function(e) { e.preventDefault(); var name = $(this).closest(".container").find("input:first").attr("class") var numInputs = $(this).closest(".container").find("input").size() if (numInputs < 10) { numInputs++; if (name=="mytext"){ $(this).closest(".container").append('<div><input type="text" name="mytext[' + numInputs + ']"/><a href="#" class="delete">Delete</a></div>'); } if (name=="text"){ $(this).closest(".container").append('<div><input type="text" name="text[' + numInputs + ']"/><a href="#" class="delete">Delete</a></div>'); } } else alert('You Reached the limits') }); $(document).on("click", ".delete", function(e) { e.preventDefault(); $(this).parent('div').remove(); }) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container"> <button class="add_form_field">Add New Field &nbsp; <span style="font-size:16px; font-weight:bold;">+ </span></button> <div> <input type="text" name="mytext[1]" class="mytext"> </div> </div> <div class="container"> <button class="add_form_field">Add New Field &nbsp; <span style="font-size:16px; font-weight:bold;">+ </span></button> <div> <input type="text" name="text[1]" class="text"> </div> </div> 

Answer 2

 $(document).ready(function() { var max_fields = 10; //maximum input boxes allowed var wrapper = $(".input_fields_wrap"); //Fields wrapper var add_button = $(".add_field_button"); //Add button ID var x = 1; //initlal text box count $(add_button).click(function(e){ //on add input button click e.preventDefault(); if(x < max_fields){ //max input box allowed x++; //text box increment $(wrapper).append('<div><input type="text" name="mytext[]"/><a href="#" class="remove_field">Remove</a></div>'); //add input box } }); $(wrapper).on("click",".remove_field", function(e){ //user click on remove text e.preventDefault(); $(this).parent('div').remove(); x--; }) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="input_fields_wrap"> <button class="add_field_button">Add More Fields</button> <div><input type="text" name="mytext[]"></div> </div> 

这是一个有效的示例，希望对您有所帮助。

Answer 3

这可能对您有帮助

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>

function removeUserDetail(index)
{
    var rows=jQuery("#user_info tr").length;
    jQuery("#user_info tr:nth-child("+(index+1)+")").remove();

    if(index==(rows-1))
    {
        jQuery("#user_info tr:nth-child("+(index)+")").children().eq(4).append('<a class="mc_plus_button" id="plus_1" href="javascript:void();" onclick="addUserDetail();" title="add"><strong>+</strong></a>');
    }
    jQuery("#user_info tr").each(function(i,e){
        if(i>1)
        {
            jQuery(this).children().eq(4).children().eq(0).attr("onclick","removeUserDetail("+i+");");
        }
        });
}
      function addUserDetail() {
        var row_count1 = jQuery("#user_info tr").length;
        var row_count = 0;
        jQuery(".tr_clone").each(function(index, value) {
          var rowid = jQuery(this).data('rowid');
          if (rowid > row_count) {
            row_count = rowid;
          }
        });
        row_count = row_count + 1;

        jQuery("#user_info tr").eq(row_count1 - 1).find(".mc_plus_button").remove();
        var html = '<tr class="tr_clone" data-rowid="' + row_count + '"><td>' + row_count + '</td>';
        html += '<td style="text-align: center"><input type="text" name="user_info[name][]" id="name_'+row_count+'" aria-invalid="false" /></td>';
        html += '<td style="text-align: center"><input type="text" name="user_info[email][]" id="email_'+row_count+'" aria-invalid="false" /></td>';

        html += '<td style="text-align: center"><input type="text" name="user_info[contact][]" id="contact_'+row_count+'" aria-invalid="false" /></td>';

        html += '<td><a class="mc_minus_button" id="minus_' + row_count + '" href="javascript:void();" onclick="removeUserDetail(' + row_count + ');" title="remove"><strong>&ndash;</strong></a><a class="mc_plus_button" href="javascript:void();" onclick="addUserDetail();" title="add"><strong>+</strong></a></td></tr>';

        jQuery("#user_info").append(html);

      }
</script>

<table id="user_info">
  <tr>
    <th>#</th>
    <th>Name</th>
    <th>Email</th>
    <th>Contact</th>
  </tr>
  <tr class="tr_clone" data-rowid="1">
    <td align="center">1</td>
    <td style="text-align: center">
      <input type="text" name="user_info[name][]" id="name_1" aria-invalid="false" />
    </td>
    <td style="text-align: center">
      <input type="text" name="user_info[email][]" id="email_1" aria-invalid="false" />
    </td>
    <td style="text-align: center">
      <input type="text" name="user_info[contact][]" id="contact_1" aria-invalid="false" />
    </td>
    <td><a class="mc_plus_button" href="javascript:void();" onclick="addUserDetail();" title="add"><strong>+</strong></a></td>
  </tr>

</table>