Welcome to JavaScript
A great thing about programming with JavaScript is that most, if not all, of the tools you’ll need are completely free. That’s particularly reassuring, as you’ll want a lot of the following items in order to develop using JavaScript in a productive and reliable way. Chapter 3, Tools of the Trade, goes into the following categories in much more detail.
BROWSERSPresumably, you already have at least one Web browser, but you’ll want several. All the key modern browsers are free and should be used: Chrome, Firefox, Safari, Opera, and even Internet Explorer.
TEXT EDITORTo write JavaScript code, you can use almost any text editor, ...
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