jquery datetimepicker clear button

jQuery Datetimepicker Clear Button

Introduction

jQuery Datetimepicker is a popular plugin used to add date and time picker functionality to input fields in web pages. One common requirement is to provide a clear button to allow users to easily remove the selected date and time from the input field. In this article, we will explore how to add a clear button to the jQuery Datetimepicker plugin.

Prerequisites

Before we begin, make sure you have the following:

• Basic understanding of HTML, CSS, and JavaScript
• jQuery library included in your web page

Installation

To get started, you need to include the necessary files for the jQuery Datetimepicker plugin. You can download the plugin from the official website or include it via a CDN:

<link rel="stylesheet" type="text/css" href="
<script src="

Adding the Clear Button

To add a clear button to the jQuery Datetimepicker plugin, we can leverage the onClose event provided by the plugin. This event is triggered when the picker is closed, either by selecting a date or time or by clicking outside the picker.

Here's an example of how to add a clear button to a datetime input field:

<input type="text" id="datetimepicker">
<button id="clearButton">Clear</button>

<script>
$(function() {
  $('#datetimepicker').datetimepicker({
    onClose: function(dateText, inst) {
      if (dateText === '') {
        $('#clearButton').hide();
      } else {
        $('#clearButton').show();
      }
    }
  });

  $('#clearButton').click(function() {
    $('#datetimepicker').val('');
    $(this).hide();
  });
});
</script>

In the above code, we first initialize the datetime picker on the input field with the datetimepicker() method. Inside the onClose event handler, we check if the dateText parameter is empty, indicating that the user cleared the input field. If it is empty, we hide the clear button; otherwise, we show it.

We also attach a click event handler to the clear button. When the button is clicked, we set the value of the input field to an empty string and hide the button.

Styling the Clear Button

To make the clear button visually appealing, you can apply some CSS styling. Here's an example of how to style the clear button:

<style>
#clearButton {
  background-color: #f44336;
  color: white;
  border: none;
  padding: 10px 20px;
  margin-left: 10px;
  border-radius: 4px;
  cursor: pointer;
}

#clearButton:hover {
  background-color: #d32f2f;
}
</style>

In the above code, we define some CSS rules to style the clear button. You can customize the styles according to your preference.

Class Diagram

Below is a class diagram illustrating the relationship between the main components involved in adding a clear button to the jQuery Datetimepicker plugin:

classDiagram
    class ClearButton {
      +show()
      +hide()
    }
    class Datetimepicker {
      -onClose()
      +datetimepicker()
    }
    class InputField {
      +val()
      +empty()
    }
    ClearButton --> InputField
    Datetimepicker --> InputField
    Datetimepicker --> ClearButton

The class diagram shows that the ClearButton communicates with the InputField to show or hide itself. The Datetimepicker interacts with both the InputField and the ClearButton to set the value of the input field and handle the picker's close event.

Sequence Diagram

Below is a sequence diagram illustrating the flow of events when the clear button is clicked:

sequenceDiagram
  participant User
  participant ClearButton
  participant InputField
  participant Datetimepicker

  User->>ClearButton: Click clear button
  Note over ClearButton: Hide clear button
  ClearButton->>InputField: Clear input field
  InputField->>Datetimepicker: Trigger onClose event
  Note over Datetimepicker: Check if input field is empty
  alt Input field is empty
    Note over Datetimepicker: Hide clear button
  else Input field is not empty
    Note over Datetimepicker: Show clear button
  end

The sequence diagram shows the interaction between the user, the clear button, the input field, and the datetime picker. When the user clicks the clear button, it triggers a series of actions: hiding the clear button, clearing the input field, and checking if the input field is empty. Based on the result, the datetime picker either hides or shows the clear button accordingly.

Conclusion

In this article, we have explored how to add a clear button to the jQuery Datetimepicker plugin. We have seen how to leverage the onClose event to show or hide the button based on the input field's value. We have also discussed how to style