Identifying dynamically generated elements

In the following code,

<script>
开发者_C百科 function val()
 {
    //get alltextarea to validate
  }
$(document).ready(function() {
var html= '<form>'
html += '<textarea name="test" id="test"';
    html += '<textarea name="test1" id="test1"';
html += 'form';

$('#get_div').append();
 });

 </script>

<div id= "get_div"></div> 
<input type="button" onclick="val();"

The two textareas are dynamically generated.Now how to validate it in function val.When i do $('#test').val() or document.getElementbyId(test).value I could not find the values of the textareas

Thanks..

You're not generating valid HTML, there are a few problems:

• The <textarea> elements aren't closed.
• The <form> element isn't closed
• The onclick isn't rigged up correctly (bettter done via jQuery anyway)

Here's a corrected version with those changes that works:

jQuery:

$(document).ready(function() {
var html= '<form>'
    html += '<textarea name="test" id="test"></textarea>';
    html += '<textarea name="test1" id="test1"></textarea>';
    html += '</form>';
  $('#get_div').append(html);
  $("input").click(function() {
    alert($('#test').val());        
  });
});​

HTML:

<div id= "get_div"></div> 
<input type="button" Value="TestBtn"​ />​​​​​​​​​​​​​​

See a demo here

You can't tell the difference intrinsically between dynamically created elements and those from ordinary markup. What I'd suggest you do is use a marker class so:

$(function() {
  $("textarea").addClass("static");
  ...
});

Those text areas without the static class are dynamically created. This is of course a cooperative scheme as there is nothing stopping you from creating dynamic markup with the static class but, like I said, you can't do anything about that.