Develop Reference

How to control the disability state of HTML inputs using Javascript

I have been trying to cycle between the disability states of two inputs on my website by using a button attached to some JavaScript. My current code has two buttons in use which both disable one input and enable the other, however this is not very practical. I wanted to know how I can use one button and one script to cycle between the disability states of my inputs, this is my current code:
<script>
function switch_monthlyexpense()
{
document.getElementById("monthlyexpenses").disabled=false;
document.getElementById("monthlypexpenses").disabled=true;
}
</script>
<script>
function switch_monthlypexpense()
{
document.getElementById("monthlyexpenses").disabled=true;
document.getElementById("monthlypexpenses").disabled=false;
}
</script>
<button class="btn btn-primary" onclick="switch_monthlyexpense()" id="monthlyexpensestoggle">Expenses</button>
<button class="btn btn-primary" onclick="switch_monthlypexpense()" id="monthlypexpensestoggle">P Expenses</button>
<form id="expenses_form" style="visibility:visible;">
<div class="form-group">
<div class="form-group col-md-1">
<label for="monthlyexpenses" id="monthlyexpenseslabel">Monthly Expenses</label>
<input type="number" class="form-control" id="monthlyexpenses" placeholder="0" disabled>
</div>
<span class="input-group-text" id="dsign5">$</span>
</form>
<form id="pexpenses_form" style="visibility:visible;">
<div class="form-group">
<div class="form-group col-md-1">
<label for="monthlypexpenses" id="monthlypexpenseslabel">Monthly P Expenses</label>
<input type="number" class="form-control" id="monthlypexpenses" placeholder="0">
</div>
<span class="input-group-text" id="psign4">%</span>
</form>

<script>
// use a variable to note which one is disabled
let selected = "monthlyexpenses"
function switchDisabled () {
// toggle the from "monthlyexpenses" to "monthlypexpenses" or vice versa
selected = selected === "monthlyexpenses" ? "monthlypexpenses" : "monthlyexpenses"
// check if the DOM disabled state is the same as the selected
document.getElementById("monthlyexpenses").disabled = selected === "monthlyexpenses";
document.getElementById("monthlypexpenses").disabled = selected === "monthlypexpenses";
}
</script>
<button class="btn btn-primary" onclick="switchDisabled()" id="switch-button">Switch</button>
<form id="expenses_form" style="visibility:visible;">
<div class="form-group">
<div class="form-group col-md-1">
<label for="monthlyexpenses" id="monthlyexpenseslabel">Monthly Expenses</label>
<input type="number" class="form-control" id="monthlyexpenses" placeholder="0" disabled>
</div>
<span class="input-group-text" id="dsign5">$</span>
</form>
<form id="pexpenses_form" style="visibility:visible;">
<div class="form-group">
<div class="form-group col-md-1">
<label for="monthlypexpenses" id="monthlypexpenseslabel">Monthly P Expenses</label>
<input type="number" class="form-control" id="monthlypexpenses" placeholder="0">
</div>
<span class="input-group-text" id="psign4">%</span>
</form>

disabled is an attribute so you can set it by:
document.getElementById("myId").setAttribute('disabled', '');
And to enable the element:
document.getElementById("myId").removeAttribute('disabled');
Your first function will look like:
function switch_monthlyexpense()
{
document.getElementById("monthlyexpenses").removeAttribute('disabled');
document.getElementById("monthlypexpenses").setAttribute('disabled', '');
}

Set focus to the next input element

I have a bootstrap form where I want to set the focus to the next 'enabled' input element upon pressing enter key. When I press enter in Barcode input element, I want to set the focus to the Quantity input element since it is the next enabled input element.
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row">
<div class="col-3 pr-0">
<div class="form-group">
<label for="txtBarcode">Barcode</label>
<input type="text" id="txtBarcode" name="barcode" class="form-control form-control-sm">
</div>
</div>
<div class="col-7 pl-2 pr-0">
<div class="form-group">
<label for="txtPartDesc">Description</label>
<input type="text" id="txtPartDesc" name="part_desc" value="" class="form-control form-control-sm" disabled>
</div>
</div>
<div class="col-2 pl-2">
<div class="form-group">
<label for="txtUom">UoM</label>
<input type="text" id="txtUom" name="barcode" value="" class="form-control form-control-sm" disabled>
</div>
</div>
</div>
<div class="row">
<div class="col-4 pr-0">
<div class="form-group">
<label for="txtQuantity">Quantity</label>
<input type="text" id="txtQuantity" name="barcode" class="form-control form-control-sm">
</div>
</div>
</div>
What I have tried so far is:
$(":input").keydown(function(event){
if (event.keyCode === 13) {
$(this).nextAll(':input:enabled').first().focus();
}
});
But this doesn't work as I expect.

next(), nextAll(), and the other similar methods are for finding siblings. Since none of your inputs are actual siblings this will not work.
What you can do however is:
Get a jQuery object of all the enabled inputs
var enabledInputs = $("input:enabled");
Get the index of the current input in that jQuery object using index()
var idx = enabledInputs.index(this);
Then using that index get the element at index+1 using eq()
enabledInputs.eq(idx+1).focus();
Demo
$(":input").keydown(function(event){
if (event.keyCode === 13) {
var enabledInputs = $("input:enabled");
var idx = enabledInputs.index(this);
enabledInputs.eq(idx+1).focus()
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row">
<div class="col-3 pr-0">
<div class="form-group">
<label for="txtBarcode">Barcode</label>
<input type="text" id="txtBarcode" name="barcode" class="form-control form-control-sm">
</div>
</div>
<div class="col-7 pl-2 pr-0">
<div class="form-group">
<label for="txtPartDesc">Description</label>
<input type="text" id="txtPartDesc" name="part_desc" value="" class="form-control form-control-sm" disabled>
</div>
</div>
<div class="col-2 pl-2">
<div class="form-group">
<label for="txtUom">UoM</label>
<input type="text" id="txtUom" name="barcode" value="" class="form-control form-control-sm" disabled>
</div>
</div>
</div>
<div class="row">
<div class="col-4 pr-0">
<div class="form-group">
<label for="txtQuantity">Quantity</label>
<input type="text" id="txtQuantity" name="barcode" class="form-control form-control-sm">
</div>
</div>
</div>

The next input is not a sibling of the #barcode input, so nextAll won't work at that point. Try navigating to the parent's parent, the div class="col-, and then use nextAll to recursively search through that parent's siblings until a matching element is found:
$(":input").keydown(function(event) {
if (event.keyCode !== 13) return;
$(this)
.parent()
.parent() // get to the `class=col-#` element
.nextAll(':input:enabled')
.first()
.focus();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" />
<div class="row">
<div class="col-3 pr-0">
<div class="form-group">
<label for="txtBarcode">Barcode</label>
<input type="text" id="txtBarcode" name="barcode" class="form-control form-control-sm">
</div>
</div>
<div class="col-7 pl-2 pr-0">
<div class="form-group">
<label for="txtPartDesc">Description</label>
<input type="text" id="txtPartDesc" name="part_desc" value="" class="form-control form-control-sm" disabled>
</div>
</div>
<div class="col-2 pl-2">
<div class="form-group">
<label for="txtUom">UoM</label>
<input type="text" id="txtUom" name="barcode" value="" class="form-control form-control-sm" disabled>
</div>
</div>
</div>
<div class="row">
<div class="col-4 pr-0">
<div class="form-group">
<label for="txtQuantity">Quantity</label>
<input type="text" id="txtQuantity" name="barcode" class="form-control form-control-sm">
</div>
</div>
</div>

If I understand your question correctly then one solution to this problem is to update your keydown() handler like so:
if (event.keyCode === 13) {
// Get all enabled inputs in the document
var inputs = $('input:enabled');
// Iterate all inputs, searching for the index of the "next" input to "this"
for(var i = 0; i < inputs.length; i++) {
// If the "global" index of "this" input is found
if( $(inputs).eq(i).is( $(this) ) ) {
// Then select the "next" input by incrementing the index, and call
// focus on that input if it exists
inputs.eq(i + 1)
.css({ border : '1px solid red' }) // Added to help visualise focus, remove this line
.focus();
// Exit the loop now that focus has been called on "next" input
break
}
}
}
The idea here is to select the next input element based on the order that they occur in the DOM, rather than to select the next input element based on adjacent siblings to the input that "enter" is pressed. This solution also corrects a few minor errors in your code's selector syntax. Here's a working demo:
$("input").keydown(function(event){
if (event.keyCode === 13) {
var inputs = $('input:enabled');
for(var i = 0; i < inputs.length; i++) {
if( $(inputs).eq(i).is( $(this) ) ) {
inputs.eq(i + 1)
.css({ border : '1px solid red' }) // Added to help visualise focus, remove this line
.focus()
break
}
}
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row">
<div class="col-3 pr-0">
<div class="form-group">
<label for="txtBarcode">Barcode</label>
<input type="text" id="txtBarcode" name="barcode" class="form-control form-control-sm">
</div>
</div>
<div class="col-7 pl-2 pr-0">
<div class="form-group">
<label for="txtPartDesc">Description</label>
<input type="text" id="txtPartDesc" name="part_desc" value="" class="form-control form-control-sm" disabled>
</div>
</div>
<div class="col-2 pl-2">
<div class="form-group">
<label for="txtUom">UoM</label>
<input type="text" id="txtUom" name="barcode" value="" class="form-control form-control-sm" disabled>
</div>
</div>
</div>
<div class="row">
<div class="col-4 pr-0">
<div class="form-group">
<label for="txtQuantity">Quantity</label>
<input type="text" id="txtQuantity" name="barcode" class="form-control form-control-sm">
</div>
</div>
</div>

Dynamically add and remove form fields to be validated by Parsley.js

Here is my fiddle: My Fiddle (updated)
In my form (ID: #form), inputs fields are shown or hidden based on the selected option of a select input.
Each Input and its labels a wrapped in a div, which is hidden or shown based on the selected option. The attribute data-children of the select contains the information (in JSON Format) which inputs are to be shown when a certain option is selected.
I use the data-parsley-excluded attribute to remove the fields not visible from the parsley validation (Parsley Documentation).
Before I execute the parsley method $('#form').destroy();, at the end $('#form').parsley();
My HTML:
<div class="container">
<div class="row">
<div class="col-sm-offset-2 col-sm-8">
<form id="form" method="post" accept-charset="UTF-8" class="form-horizontal" data-parsley-validate="">
<div class="form-group">
<label class="control-label" for="question_01" style="">Question 1</label>
<select class="form-control" name="question_01" id="question_01" required data-children="{"option_01":["input_01","input_02","input_03","input_04","input_05","input_06"],"option_02":["input_01","input_06","input_07","input_08","input_09","input_10"],"option_03":["input_02","input_04","input_05","input_07","input_09","input_10","input_11"]}">
<option value="" selected>Bitte auswählen</option>
<option value="option_01">Option 01</option>
<option value="option_02">Option 02</option>
<option value="option_03">Option 03</option>
</select>
</div>
<div id="div_input_01" class="form-group input-div hidden">
<label for="input_01" style="">Input 01</label>
<input type="text" class="form-control" name="input_01" id="input_01" required>
</div>
<div id="div_input_02" class="form-group input-div hidden">
<label for="input_02" style="">Input 02</label>
<input type="text" class="form-control" name="input_02" id="input_02" required>
</div>
<div id="div_input_03" class="form-group input-div hidden">
<label for="input_03" style="">Input 03</label>
<input type="text" class="form-control" name="input_03" id="input_03" required>
</div>
<div id="div_input_04" class="form-group input-div hidden">
<label for="input_04" style="">Input 04</label>
<input type="text" class="form-control" name="input_04" id="input_04" required>
</div>
<div id="div_input_05" class="form-group input-div hidden">
<label for="input_05" style="">Input 05</label>
<input type="text" class="form-control" name="input_05" id="input_05" required>
</div>
<div id="div_input_06" class="form-group input-div hidden">
<label for="input_06" style="">Input 06</label>
<input type="text" class="form-control" name="input_06" id="input_06" required>
</div>
<div id="div_input_07" class="form-group input-div hidden">
<label for="input_07" style="">Input 07</label>
<input type="text" class="form-control" name="input_07" id="input_07" required>
</div>
<div id="div_input_08" class="form-group input-div hidden">
<label for="input_08" style="">Input 08</label>
<input type="text" class="form-control" name="input_08" id="input_08" required>
</div>
<div id="div_input_09" class="form-group input-div hidden">
<label for="input_09" style="">Input 09</label>
<input type="text" class="form-control" name="input_09" id="input_09" required>
</div>
<div id="div_input_10" class="form-group input-div hidden">
<label for="input_10" style="">Input 10</label>
<input type="text" class="form-control" name="input_10" id="input_10" required>
</div>
<div id="div_input_11" class="form-group input-div hidden">
<label for="input_11" style="">Input 11</label>
<input type="text" class="form-control" name="input_11" id="input_11" required>
</div>
<button type="button" class="btn btn-info btn-block btn-submit-settings">Submit</button>
</form>
</div>
</div>
</div>
My Javascript:
$(document).ready(function() {
$('.btn-submit-settings').on('click', function(e) {
window.Parsley.on('field:error', function()
{
console.log('Validation failed for: ', this.$element);
});
$('#form').submit();
});
$('#form select').change(function() {
var $this = $(this);
if ($this.data('children')) {
$('#form').parsley().destroy();
// Hide all child elements
$.each($this.data('children'), function(value_id, input_id_array) {
$.each(input_id_array, function(key, input_id) {
if ($('#div_' + input_id).length ) {
$('#' + input_id).val(null);
if (!$('#div_' + input_id).hasClass('hidden')) {
$('#div_' + input_id).addClass('hidden');
}
}
});
});
// show the child elements of the selected option
if ($this.data('children')[$this.val()]) {
$.each($this.data('children')[$this.val()], function(key, input_id) {
if ($('#div_' + input_id).length )
{
if ($('#div_' + input_id).hasClass('hidden'))
{
$('#div_' + input_id).removeClass('hidden');
}
}
});
}
// For all inputs inside hidden div set attribute "data-parsley-excluded" = true
$('#form div.input-div.hidden').find(':input').each(function() {
var attr_data_parsley_excluded = $(this).attr('data-parsley-excluded');
if (typeof attr_data_parsley_excluded === typeof undefined || attr_data_parsley_excluded === false) {
$(this).attr('data-parsley-excluded', 'true');
}
});
// For all inputs inside not hidden div remove attribute "data-parsley-excluded"
$('#form div.input-div:not(.hidden)').find(':input').each(function() {
console.log(this.id);
$(this).removeAttr('data-parsley-excluded');
});
$('#form').find(':input').each(function() {
// Log shows that attribute is set right, seems to be ignored by parsley
console.log('ID: ' + this.id + ' TYPE: ' + $(this).prop('nodeName') + ': excluded=' + $(this).attr('data-parsley-excluded'));
});
$('#form').parsley();
$('#form').parsley().refresh();
}
});
});
I can't get it to work, even though the attributes seem to be set the right way.
The fields once hidden, stay out of the validation.

I guess you should add the attribute data-parsley-required="false" to exclude hidden fields from validation.
I mean, try to change
<input type="text" class="form-control" name="input_01" id="input_01" required>
to this
<input type="text" class="form-control" name="input_01" id="input_01" data-parsley-required="false">
and just change the attribute value if you want to validate it or not

This is more of a personal opinion than a factual answer, but I think you are attempting to solve the problem incorrectly. If I were doing this, I would create 2 parsley groups "shouldValidate" and "shouldNotValidate", and add your fields accordingly based on whether they are displayed or not. Then when you call validate, pass the group name "shouldValidate", and only that set of elements will be validated.

You probably need to call refresh on your parsley form after you modify excluded.

Dynamic multiselect feature

I am creating the fields dynamically in HTML using this JS, and in multiselect I'm using bootstrap multiselect here is the code https://bootsnipp.com/snippets/Ekd8P when I click on the add more button it creates the form dynamically.
js code for creating a form dynamically :
$(function() {
// Remove button
$(document).on(
'click',
'[data-role="dynamic-fields"] > .form-horizontal [data-role="remove"]',
function(e) {
e.preventDefault();
$(this).closest('.form-horizontal').remove();
}
);
// Add button
var i = 1;
$(document).on(
'click',
'[data-role="dynamic-fields"] > .form-horizontal [data-role="add"]',
function(e) {
e.preventDefault();
var container = $(this).closest('[data-role="dynamic-fields"]');
new_field_group = container.children().filter('.form-horizontal:first-child').clone();
new_field_group.find('input').each(function() {
if (this.name == 'tags[0]') {
$(this).tagsinput('destroy');
$(this).tagsinput('removeAll');
this.name = this.name.replace('[0]', '[' + i + ']');
var new_container = $(this).closest('[class="form-group"]');
new_container.find(".bootstrap-tagsinput:first").remove();
} else {
$(this).val('');
}
});
new_field_group.find('select').each(function() {
if (this.name == 'addons[0]') {
$(this).multiselect('rebuild');
this.name = this.name.replace('[0]', '[' + i + ']');
var new_container = $(this).closest('[class="multiselect-native-select"]');
new_container.find(".multiselect-native-select > .multi").remove();
} else {
$(this).val('');
}
});
i += 1;
container.append(new_field_group);
}
);
});
and html code for form elements:
<form action="" method="post" novalidate="novalidate" enctype="multipart/form-data">
{{ csrf_field() }}
<div data-role="dynamic-fields">
<div class="form-horizontal">
<div class="row">
<div class="col-sm-4">
<div class="form-group">
<label for="Firstname5" class="col-sm-3">Enter Dish Name</label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Name1" name="Name[]" required data-rule-minlength="2">
</div>
</div>
</div>
<div class="col-sm-4">
<div class="form-group">
<label for="Firstname5" class="col-sm-3">Enter Dish Price</label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Price" name="Price[]" required data-rule-minlength="2">
</div>
</div>
</div>
<div class="col-sm-4">
<div class="form-group">
<label for="Firstname5" class="col-sm-3">Select Food Type</label>
<div class="col-sm-8">
<select id="select1" class="form-control" name="select[]" required>
#foreach($types as $type)
<option value="{{$loop->iteration}}">{{$type->food_type_name}}</option>
#endforeach
</select>
<p class="help-block" data-toggle="tooltip" data-placement="bottom" title="xyz"><i class="md md-info"></i></p>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-4">
<div class="form-group">
<label for="Firstname5" class="col-sm-3">Dish Description</label>
<div class="col-sm-8">
<textarea name="Description[]" id="field-value" class="form-control" rows="1"></textarea>
</div>
</div>
</div>
<div class="col-sm-4 contacts">
<div class="form-group">
<label class="col-sm-3" for="rolename">Add Addons</label>
<div class="col-sm-8">
<select id="dates-field2" class="multiselect-ak form-control" name="addons[0]" id="trigger3" data-role="multiselect" multiple="multiple">
#foreach($addons as $addon)
<option value="{{$addon->addonid}}">{{$addon->addon_name}}</option>
#endforeach
</select>
</div>
</div>
</div>
<div class="col-sm-4">
<div class="form-group">
<label for="Firstname5" class="col-sm-3">Enter Tags</label>
<div class="col-sm-8">
<input type="text" value="" name="tags[0]" class="form-control" data-role="tagsinput" placeholder="e.g. spicy, healthy" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-4">
<div class="col-sm-4">
<div class="checkbox checkbox-styled">
<label><em>Half Plate Price</em>
<input type="checkbox" value="" class="trigger2" id="trigger2" name="question">
</label>
</div>
</div>
<div class="col-sm-4">
<div id="hidden_fields2" class="hidden_fields2" style="display:none;">
<input type="text" id="hidden_field2" name="Price2[]" placeholder="Please Enter" class="form-control">
</div>
</div>
</div>
<div class="col-sm-4">
<div class="col-sm-5">
<div class="checkbox checkbox-styled">
<label><em>Quarter Plate Price</em>
<input type="checkbox" value="" class="trigger" id="trigger" name="question">
</label>
</div>
</div>
<div class="col-sm-4">
<div id="hidden_fields" class="hidden_fields" style="display:none;">
<input type="text" id="hidden_field" name="Price3[]" placeholder="Please Enter" class="form-control">
</div>
</div>
</div>
</div>
<br>
<button class="btn btn-delete" data-toggle="tooltip" data-placement="bottom" title="Delete Field" data-role="remove">
Delete Item
</button>
<button class="btn ink-reaction btn-raised btn-primary" data-toggle="tooltip" data-placement="bottom" title="Add More Field" data-role="add">
Add More Items
</button>
</div>
<!-- /div.form-inline -->
</div>
<!-- /div[data-role="dynamic-fields"] -->
<div class="form-group">
<button type="submit" name="submit" href="#" class="btn ink-reaction btn-raised btn-primary" style="margin-top: -62px;margin-left: 160px;">Submit Items</button>
</div>
<!--end .form-group -->
</form>
The issue is that when I click on the add more item it reflects the multiselect dropdown twice as you see in this image.
I want that if I click on the add more item button it restates the multiselect dropdown as in the first state.
see this jsfiddle.net/akshaycic/svv742r7/7 it will clear all your doubt. on click plus button it is not reflect to "none selected" state it will remain in its initial state.
Any leads would be helpful. Thank you in advance.

Get selected text from drop down list using name attribute jQuery

I am trying to get the selected value from the dropdown.
I am creating the controls dynamically. I am not using ID attribute to avoid the problem of having multiple controls with the same ID/ duplicate IDs.
Here is how I am able to get the values of the textbox controls
$('.btn-success').off('click').on('click', function (e) {
e.preventDefault();
var row = $(this).closest(".row");
var lnameval = row.find("input[name='ContactLastName']").val();
});
Is it possible to get the selected value of the dropdown using the name attribute.
something like : var titleVal = row.find("input[name='ContactTitle']").val();
HTML :
<form id="formAddContact" role="form" class="form-horizontal">
<div class="modal-body">
<div id="errorMessageContainer2" class="alert alert-danger" role="alert" style="display:none;">
<ul id="messageBox2" class="list-unstyled"></ul>
</div>
#foreach (string cInfo in Model.emailList)
{
<div class="row" id="#cInfo.Replace("#","")" style="display: none;">
<div class="col-md-6">
<div class="form-group">
<div class="col-md-3 control-label">
<label>Title:</label>
</div>
<div class="col-md-3">
<select class="form-control ToCapture" name="ContactTitle">
<option value="Mr">Mr</option>
<option value="Mrs">Mrs</option>
<option value="Ms">Ms</option>
<option value="Miss">Miss</option>
<option value="Dr">Dr</option>
</select>
</div>
</div>
<div class="form-group">
<div class="col-md-3 control-label">
<label id="lblfname">First Name:</label>
</div>
<div class="col-md-3">
<input maxlength="50" name="ContactFirstName" type="text" value="">
</div>
</div>
<div class="form-group">
<div class="col-md-3 control-label">
<label id="lbllname">Last Name:</label>
</div>
<div class="col-md-3">
<input maxlength="50" name="ContactLastName" type="text" value="">
</div>
</div>
</div>
</div>
<div class="modal-footer">
<input type="button" value="Add Contact" class="btn btn-success">
<input type="button" value="Cancel" class="btn btn-default">
</div>
<br/>
}
<hr />
</div>
</form>

Just a little change needed :
row.find("select[name='ContactTitle']").val();
It's not an input.