Getting Started With JavaScript

JavaScript has been one of the most popular scripting languages for dynamic interactivity. It is a completely different language from HTML5 and CSS3, and it can be challenging for those without programming experience to begin. Research and describe some tips for someone new to JavaScript to get started. In particular, focus on at least two of the following points while providing sample code (with comments) for each:

• Explain howdifferent browsers handle JavaScript code. What considerations must be made when developing for different browsers?
• Describe the use of JavaScript comments, including the process of "commenting out" portions of JavaScript code.
• Explain the primary rules for creating a JavaScript identifier.
• Explain the use of variable declarations and assignment statements with numeric, string, and Boolean data.
• Explain the syntax for referring to a method or property of an object.
• Explain the issue of cross-browser compatibility as it relates to JavaScript code.
• Describe the creation and use of event handlers, including an event handler for the load event of the window object and how the HTML and JavaScript sections work together using the DOM.
• Describe how the process flow for form submissions worksbetween HTML, JavaScript, and a server-side language like PHP.