jQuery in Practice: AJAX, Forms, Delegation & Animation
Load and send data with $.ajax, validate forms, delegate events and time animations on a bike-hire dashboard, with every answer checked as you go.
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About this course
In this intermediate jQuery course you build the hire-desk panel of a fictional bike rental and trace real code step by step. You work out which requests reach .done, .fail or time out, follow values through .then chains, retry with exponential back-off and combine parallel requests with $.when. You decide what serialize() really sends, validate forms and block double submits. You compare direct and delegated events, follow bubbling and stopPropagation, change many DOM targets at once, decode .data() conversions and time animation queues, easing and a debounced live search. Twenty labs, each checked instantly, lead to a final project and a certificate exam. First lesson free.
Lessons
- jQuery Collections Recap: Filter, Count & addClass on the Hire DeskFree
- $.ajax Anatomy: Settings, Status Codes, Timeouts & parsererror Locked
- $.getJSON and $.each: Rendering a JSON List into the Page Locked
- Promise Chains: .then Passes Values On, .done Does Not Locked
- Retrying Failed Requests with Exponential Back-off Locked
- $.when: Parallel Requests, the Slowest Wins, the First Failure Ends It Locked
- serialize() and serializeArray(): What a Form Really Sends Locked
- Live Form Validation: Reading Values, Trimming and Range Rules Locked
- Submitting Forms with AJAX: Blocking Double Submits Locked
- Event Delegation: One Handler for Rows That Do Not Exist Yet Locked
- Bubbling, Delegated Order and stopPropagation Locked
- Changing the DOM: append, remove, first() and Many Targets Locked
- Building Rows Efficiently: One Insert Instead of Hundreds Locked
- .data() vs .attr(): When jQuery Converts Your Numbers Locked
- $.map and $.each: Argument Order, Flattening and Breaking Out Locked
- Animation Timing: Durations, delay() and Parallel Elements Locked
- The Effects Queue: Why Menus Keep Bouncing, and stop() Locked
- .animate() and Easing: Where Is the Element at Time t? Locked
- Debouncing a Live AJAX Search Locked
- Final Project: The Live Hire-Desk Panel Locked