Add input fields dynamically but fields are genera

问题:

yeah.. this question seams like repeated but really couldn't find something similar.. Things work here but are not dynamic here.. but yeah its simple..

    var counter = 0;
function addInput(divName){
      var newdiv = document.createElement('div');
      newdiv.innerHTML = "Member " + (counter + 1) + " <br><input type='text' name='myInputs[]'>";
      document.getElementById(divName).appendChild(newdiv);
      counter++;
 }

but here i am giving it a little bit twist..

    var counter = 0;
function addInput(divName){
      var newdiv = document.createElement('div');
      newdiv.innerHTML = "Member " + (counter + 1) + addmore();
      document.getElementById(divName).appendChild(newdiv);
      counter++;
 }

so, the new function "addmore()" here is returning the fields generated by the external php code which is being called with the help of AJAX..

the function addmore(); is something like this..

addmore(){
        $jd.ajax({
          url: "<?php echo JURI::root(); ?>",
          type: "POST",
          data: {'option':'com_joomd', 'view':'itempanel', 'task':'loadfields', 'typeid':<?php echo $this->cparams->typeid; ?>, 'catid[]':checked, 'id':<?php echo (int)$this->item->id; ?>, "<?php echo jutility::getToken(); ?>":1, 'abase':1},
          beforeSend: function()    {
            $jd(".poploadingbox").show();
          },
          complete: function()  {
            $jd(".poploadingbox").hide();
          },
          success: function(res)    {

                $jd('#fieldtable_id').html(res);
          },
          error: function() {
              alert('error');                 
          }
    });
}

obviously the part $jd('#fieldtable_id').html(res); is doing the actual job, but i am not able to use it to introduce the new field here dynamically..

please guide me..

回答1:

Your function addmore() isn't returning anything because

1. There is no return "value" in your function
2. You're making an asynchronous call with $jd.ajax()

You should do like this :

var counter = 0;
function addInput(divName){
      addmore(divName);
}

and :

function addmore(divName){
        $jd.ajax({
          url: "<?php echo JURI::root(); ?>",
          type: "POST",
          data: {'option':'com_joomd', 'view':'itempanel', 'task':'loadfields', 'typeid':<?php echo $this->cparams->typeid; ?>, 'catid[]':checked, 'id':<?php echo (int)$this->item-        id; ?>, "<?php echo jutility::getToken(); ?>":1, 'abase':1},
          beforeSend: function()    {
            $jd(".poploadingbox").show();
          },
          complete: function()  {
            $jd(".poploadingbox").hide();
          },
          success: function(res)    {
             var newdiv = document.createElement('div');
             newdiv.innerHTML = "Member " + (counter + 1) + res;
             document.getElementById(divName).appendChild(newdiv);
             counter++;

          },
          error: function() {
              alert('error');                 
          }
    });
}

回答2:

If you want to return values from an ajax call . set async to false and use responseText to return value from the ajax call. Then return that variable from addmore function.

Returning values from jquery ajax call.

回答3:

try this to add/remove input fields dynamically (using jquery):

<script>$(function() {
        var scntDiv = $('#p_scents');
        var i = $('#p_scents p').size() + 1;

        $('#addScnt').live('click', function() {
                $('<p><label for="p_scnts"><input type="text" id="p_scnt" size="20" name="p_scnt_' + i +'" value="" placeholder="Input Value" /></label> <a href="#" id="remScnt">Remove</a></p>').appendTo(scntDiv);
                i++;
                return false;
        });

        $('#remScnt').live('click', function() {
                if( i > 2 ) {
                        $(this).parents('p').remove();
                        i--;
                }
                return false;
        });
});</script>

<style>
* { font-family:Arial; }
h2 { padding:0 0 5px 5px; }
h2 a { color: #224f99; }
a { color:#999; text-decoration: none; }
a:hover { color:#802727; }
p { padding:0 0 5px 0; }
input { padding:5px; border:1px solid #999; border-radius:4px; -moz-border-radius:4px; -web-kit-border-radius:4px; -khtml-border-radius:4px; }
</style>


<div id="ContentWrapper">  
<h2><a href="#" id="addScnt">Add Another Input Box</a></h2>
<form id="cat" method="POST" action="">
<div id="p_scents">
    <p>
        <label for="p_scnts"><input type="text" id="p_scnt" size="20" name="p_scnt" value="" placeholder="Input Value" /></label>
    </p>
</div>

Post name of new fields will be: p_scnt_1, p_scnt_2 etc...