JavaScript

Preparation

Mozilla Developer Network (MDN)’s Web technology for developers

• JavaScript First Steps
  • What is JavaScript?
  • A first splash into JavaScript
• JavaScript building blocks
• Client-side web APIs
  • Introduction to web APIs
  • Manipulating documents

Learning Objectives

• Describe the uses and limitations of JavaScript
• Perform client-side validation of user input using JavaScript

Practice

Check out the following examples, being sure to view the page source and to examine the integration of HTML and JavaScript:

• Get System Information
• HTML Form: onsubmit event
• Input Validation
• Input Validation using Regular Expressions

Create a web page that solicits the user’s name, age, and favorite color. Include a “Check” button that notifies the user if any field is blank and modifies any blank fields’ labels to be red.