Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table of the ...

Many business websites use forms to capture user data. These forms use HTML markup and optionally JavaScript functions. Your website may use URL variables, which allow you to pass data items as part ...

Love it or loathe it, JSX has made a big impact on front-end engineering. Here's a code-first intro to the HTML-based JavaScript templating language. JSX is a way to write HTML inside of JavaScript, ...

For creating output with drill-down for the Web, the example shows how to explicitly name the HTML files and open and close them throughout the program specify names and destination for the GIF files ...