In jQuery, it’s quite easy to add or remove a textbox dynamically. The idea is quite simple, just combine the use of ‘counter‘ variable, jQuery createElement(), html() and remove() method. See below example :

jQuery dynamic textbox example


<html>
<head>

 
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>

<style type="text/css">
	div{
		padding:8px;
	}
</style>

</head>

<body>

<h1>jQuery add / remove textbox example</h1>

<script type="text/javascript">

$(document).ready(function(){

    var counter = 2;
		
    $("#addButton").click(function () {
				
	if(counter>10){
            alert("Only 10 textboxes allow");
            return false;
	}   
		
	var newTextBoxDiv = $(document.createElement('div'))
	     .attr("id", 'TextBoxDiv' + counter);
                
	newTextBoxDiv.after().html('<label>Textbox #'+ counter + ' : </label>' +
	      '<input type="text" name="textbox' + counter + 
	      '" id="textbox' + counter + '" value="" >');
            
	newTextBoxDiv.appendTo("#TextBoxesGroup");

				
	counter++;
     });

     $("#removeButton").click(function () {
	if(counter==1){
          alert("No more textbox to remove");
          return false;
       }   
        
	counter--;
			
        $("#TextBoxDiv" + counter).remove();
			
     });
		
     $("#getButtonValue").click(function () {
		
	var msg = '';
	for(i=1; i<counter; i++){
   	  msg += "\n Textbox #" + i + " : " + $('#textbox' + i).val();
	}
    	  alert(msg);
     });
  });
</script>
</head><body>

<div id='TextBoxesGroup'>
	<div id="TextBoxDiv1">
		<label>Textbox #1 : </label><input type='textbox' id='textbox1' >
	</div>
</div>
<input type='button' value='Add Button' id='addButton'>
<input type='button' value='Remove Button' id='removeButton'>
<input type='button' value='Get TextBox Value' id='getButtonValue'>

</body>
</html>