Home » Html » Add / remove input field dynamically with jQuery

Add / remove input field dynamically with jQuery

Posted by: admin November 29, 2017 Leave a comment

Questions:

I would like to use jquery to build a dynamic add/ remove form.
IT should look like:

Name Type Required?

The example input :

  • Name Type Required?
  • Tony Admin checked (checkbox) Delete <==press the button will delete the row

What i have got is a example of add/ remove input box how can it convert to my idea? Do i have to use multi coloumn table? Thank you for kindly help

    <html>
<head>
<title>jQuery add / remove textbox example</title>

<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>
Answers:

I took the liberty of putting together a jsFiddle illustrating the functionality of building a custom form using jQuery. Here it is…

EDIT: Updated the jsFiddle to include remove buttons for each field.

EDIT: As per the request in the last comment, here is the code from the jsFiddle:

HTML:

<fieldset id="buildyourform">
    <legend>Build your own form!</legend>
</fieldset>
<input type="button" value="Preview form" class="add" id="preview" />
<input type="button" value="Add a field" class="add" id="add" />

JavaScript:

$(document).ready(function() {
    $("#add").click(function() {
        var intId = $("#buildyourform div").length + 1;
        var fieldWrapper = $("<div class=\"fieldwrapper\" id=\"field" + intId + "\"/>");
        var fName = $("<input type=\"text\" class=\"fieldname\" />");
        var fType = $("<select class=\"fieldtype\"><option value=\"checkbox\">Checked</option><option value=\"textbox\">Text</option><option value=\"textarea\">Paragraph</option></select>");
        var removeButton = $("<input type=\"button\" class=\"remove\" value=\"-\" />");
        removeButton.click(function() {
            $(this).parent().remove();
        });
        fieldWrapper.append(fName);
        fieldWrapper.append(fType);
        fieldWrapper.append(removeButton);
        $("#buildyourform").append(fieldWrapper);
    });
    $("#preview").click(function() {
        $("#yourform").remove();
        var fieldSet = $("<fieldset id=\"yourform\"><legend>Your Form</legend></fieldset>");
        $("#buildyourform div").each(function() {
            var id = "input" + $(this).attr("id").replace("field","");
            var label = $("<label for=\"" + id + "\">" + $(this).find("input.fieldname").first().val() + "</label>");
            var input;
            switch ($(this).find("select.fieldtype").first().val()) {
                case "checkbox":
                    input = $("<input type=\"checkbox\" id=\"" + id + "\" name=\"" + id + "\" />");
                    break;
                case "textbox":
                    input = $("<input type=\"text\" id=\"" + id + "\" name=\"" + id + "\" />");
                    break;
                case "textarea":
                    input = $("<textarea id=\"" + id + "\" name=\"" + id + "\" ></textarea>");
                    break;    
            }
            fieldSet.append(label);
            fieldSet.append(input);
        });
        $("body").append(fieldSet);
    });
});

CSS:

body
{
    font-family:Gill Sans MT;
    padding:10px;
}
fieldset
{
    border: solid 1px #000;
    padding:10px;
    display:block;
    clear:both;
    margin:5px 0px;
}
legend
{
    padding:0px 10px;
    background:black;
    color:#FFF;
}
input.add
{
    float:right;
}
input.fieldname
{
    float:left;
    clear:left;
    display:block;
    margin:5px;
}
select.fieldtype
{
    float:left;
    display:block;
    margin:5px;
}
input.remove
{
    float:left;
    display:block;
    margin:5px;
}
#yourform label
{
    float:left;
    clear:left;
    display:block;
    margin:5px;
}
#yourform input, #yourform textarea
{
    float:left;
    display:block;
    margin:5px;
}

Questions:
Answers:

You need to create the element.

input = jQuery('<input name="myname">');

and then append it to the form.

jQuery('#formID').append(input);

to remove an input you use the remove functionality.

jQuery('#inputid').remove();

This is the basic idea, you may have feildsets that you append it too instead, or maybe append it after a specific element, but this is how to build anything dynamically really.

Questions:
Answers:

you can do it as follow:

 $("#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();

     });

refer live demo http://www.mkyong.com/jquery/how-to-add-remove-textbox-dynamically-with-jquery/

Questions:
Answers:

why not remove the .after() in the line

newTextBoxDiv.after().html('<label>Textbox #'+ counter + ' : </label>' +

to

newTextBoxDiv.html('<label>Textbox #'+ counter + ' : </label>' +

Questions:
Answers:

Here is my JSFiddle with corrected line breaks, or see it below.

$(document).ready(function() {

var MaxInputs       = 2; //maximum extra input boxes allowed
var InputsWrapper   = $("#InputsWrapper"); //Input boxes wrapper ID
var AddButton       = $("#AddMoreFileBox"); //Add button ID

var x = InputsWrapper.length; //initlal text box count
var FieldCount=1; //to keep track of text box added

//on add input button click
$(AddButton).click(function (e) {
        //max input box allowed
        if(x <= MaxInputs) {
            FieldCount++; //text box added ncrement
            //add input box
            $(InputsWrapper).append('<div><input type="text" name="mytext[]" id="field_'+ FieldCount +'"/> <a href="#" class="removeclass">Remove</a></div>');
            x++; //text box increment

            $("#AddMoreFileId").show();

            $('AddMoreFileBox').html("Add field");

            // Delete the "add"-link if there is 3 fields.
            if(x == 3) {
                $("#AddMoreFileId").hide();
                $("#lineBreak").html("<br>");
            }
        }
        return false;
});

$("body").on("click",".removeclass", function(e){ //user click on remove text
        if( x > 1 ) {
                $(this).parent('div').remove(); //remove text box
                x--; //decrement textbox

                $("#AddMoreFileId").show();

                $("#lineBreak").html("");

                // Adds the "add" link again when a field is removed.
                $('AddMoreFileBox').html("Add field");
        }
    return false;
}) 

});

Questions:
Answers:

You can do something like this below:

//when the Add Field button is clicked
$("#add").click(function (e) {
//Append a new row of code to the "#items" div
  $("#items").append('<div><input type="text" name="input[]"><button  class="delete">Delete</button></div>');
});

For detailed tutorial http://voidtricks.com/jquery-add-remove-input-fields/

Questions:
Answers:

In your click function, you can write:

function addMoreRows(frm) {
   rowCount ++;
   var recRow = '<p id="rowCount'+rowCount+'"><tr><td><input name="" type="text" size="17%"  maxlength="120" /></td><td><input name="" type="text"  maxlength="120" style="margin: 4px 5px 0 5px;"/></td><td><input name="" type="text" maxlength="120" style="margin: 4px 10px 0 0px;"/></td></tr> <a href="javascript:void(0);" onclick="removeRow('+rowCount+');">Delete</a></p>';
   jQuery('#addedRows').append(recRow);
}

Or follow this link:
http://www.discussdesk.com/add-remove-more-rows-dynamically-using-jquery.htm