A. JavaScript Genealogy and Reference

Over the course of close to two decades, JavaScript has undergone transformation after transformation since its introduction as part of Netscape Navigator 2.0. This appendix briefly discusses the different versions of JavaScript and which browsers include which version of JavaScript.

You’ll also find a table listing most JavaScript objects up to and including ECMAScript Edition 3, along with their properties, methods, and event handlers.

JavaScript Versions

The scripting language that you think of as JavaScript has several different names (depending on whose product you have) and almost a dozen different versions. Besides JavaScript, there are also JScript and ECMAScript. Here’s a guide to which version ...

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