Hello jQuery Experts, I am a beginner with jQuery and have a query. I have managed to enable the "Add category" button when any three values (one value per box) are selected from the above three boxes. However, I am struggling to enable the "Remove Category" and "Save Categories" buttons only if there are values in the fourth box. My current code is not achieving this functionality.
var one = $('.select-manage-category').val();
var two = $('.select-manage-category1').val();
var three = $('.select-manage-category2').val();
$('.select-manage-category, .select-manage-category1, .select-manage-category2').change(function() {
var one = $('.select-manage-category').val();
var two = $('.select-manage-category1').val();
var three = $('.select-manage-category2').val();
if (one && two && three) {
$("#add-category").prop("disabled", false);
} else {
$("#add-category").prop("disabled", true);
}
});
$('#selected-lst-values').change(function() {
if ($(this).val()) {
$('#remove-category').prop("disabled", false);
$('#save-categories').prop("disabled", false);
} else {
$('#remove-category').prop("disabled", true);
$('#save-categories').prop("disabled", true);
}
});
$('#add-category').click(function() {
$(
'.select-manage-category, .select-manage-category1, .select-manage-category2'
).each(function() {
$('#selected-lst-values').append('<option value="' + $(this).val() + '">' + $(this).val() + '</option>');
});
});
$('#remove-category').click(function() { // check change here
var select = document.getElementById('selected-lst-values');
for (var i = 0; i < 3; i++) {
select.removeChild(select.lastChild);
}
if ($('#selected-lst-values').val()) {
$('#remove-category').prop("disabled", false);
$('#save-categories').prop("disabled", false);
} else {
$('#remove-category').prop("disabled", true);
$('#save-categories').prop("disabled", true);
}
});
$('#selected-lst-values>option').on("change", function() {
if ($(this).val() === '') {
$('#mnage-category-savebtn').attr({
disabled: disabled
});
} else {
$('#mnage-category-savebtn').removeAttr('disabled');
}
});.select-manage-category,
.select-manage-category1,
.select-manage-category2 {
width: 100px;
float: left;
margin-right: 4px;
}
p {
clear: left;
text-align: center;
}
#selected-lst-values {
width: 100%;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div><select class="form-control select-manage-category" size="5">
<option>1</option>
<option>2</option>
<option>1</option>
<option>2</option>
</select></div>
<div><select class="form-control select-manage-category1" size="5">
<option>1</option>
<option>2</option>
<option>1</option>
<option>2</option>
</select></div>
<div><select class="form-control select-manage-category2" size="5">
<option>1</option>
<option>2</option>
<option>1</option>
<option>2</option>
</select>
</div>
<p class="text-center color-red">You can add up to 20 categories</p>
</div>
<input id="add-category" name="add" type="button" value="Add Category" disabled>
<input id="remove-category" name="add" type="button" value="Remove Category" disabled>
<div><select id="selected-lst-values" class="form-group percent-100" size="5">
</select></div>
<button id='save-categories' class="btn btn-md btn-radius pi-btn prodetails-btn" type="button" disabled><strong>Save Categories</strong>
<span class="glyphicon glyphicon-menu-right right-arrow-head-icon"></span>
</button>