In order to understand how you can change the content of an HTML page using JavaScript, you need to know how a browser interprets the HTML code and applies styling to it.
Web developers usually talk about three languages that are used to create web pages: HTML, CSS, and JavaScript. Where possible, aim to keep the three languages in separate files,with the HTML page linking to CSS and JavaScript files. Each language forms a separate layer with a different purpose. Each layer, from left to right. builds on the previous one.
** <html> CONTENT LAYER . html files** ** {css} PRESENTATION LAYER . css file** ** javascri pt() BEHAVIOR LAYER .js files **
It is best to keep JavaScript code in its own JavaScript file. JavaScript files are text files (like HTML pages and CSS style sheets), but they have the . j s extension. The HTML
A script is a series of instructions that a computer can follow one-by-one. Each individual instruction or step is known as a statement. Statements should end with a semicolon.
You should write comments to explain what your code does.They help make your code easier to read and understand.This can help you and others who read your code =======