Summary of jQuery Crash Course [2] - Events

Main Ideas and Concepts

The video is a crash course on handling events in jQuery, focusing on how to manage user interactions with elements on a webpage. The instructor demonstrates various event types, how to attach event handlers, and the importance of the document readiness state.

Key Concepts Covered

• Setting Up Buttons and Event Handlers:
  • Creation of buttons with IDs (btn1, btn2).
  • Attaching a click event to btn1 using jQuery's click() method.
  • Use of self-calling functions to define actions on button clicks.
• Document Ready:
  • Importance of using $(document).ready() to ensure that the DOM is fully loaded before executing jQuery code.
• Using .on() Method:
  • Introduction to the .on() method as an alternative to direct event methods (like click()).
  • Example of using .on('click', function() {...}) to handle events.
• Event Handling for Show/Hide:
  • Demonstration of hiding and showing elements using the hide() and show() methods.
  • Implementation of a toggle functionality using the toggle() method.
• Different Event Types:
  • Handling various events such as dblclick, hover, mousemove, mousedown, and mouseup.
  • Explanation of how hover combines mouseenter and mouseleave.
• Mouse Event Parameters:
  • Accessing event properties using the event object (e.g., e.currentTarget, e.clientX, e.clientY).
• Form Events:
  • Handling focus and blur events on input fields.
  • Using keyup and keydown to capture user input.
  • Managing change events for select elements.
  • Preventing default form submission behavior using e.preventDefault() and capturing form data.

Methodology/Instructions

• Creating Buttons and Attaching Events:

  $('#btn1').click(function() {
              alert('Button clicked');
          });

• Using Document Ready:

  $(document).ready(function() {
              // Your jQuery code here
          });

• Using the .on() Method:

  $('#btn1').on('click', function() {
              // Your code here
          });

• Show/Hide Elements:

  $('#btn1').on('click', function() {
              $('.parra1').hide();
          });
          $('#btn2').on('click', function() {
              $('.parra1').show();
          });

• Toggle Functionality:

  $('.parra1').toggle();

• Handling Mouse Events:

  $('#btn1').on('dblclick', function() {
              $('.parra1').toggle();
          });

• Form Handling:

  $('#form').on('submit', function(e) {
              e.preventDefault();
              var name = $('#name').val();
              console.log(name);
          });

Speakers/Sources Featured

• The instructor of the video (not named in the subtitles).

Notable Quotes

— 00:00 — « No notable quotes »

Category

Educational

Video