July 1998
Intermediate to advanced
1456 pages
65h 5m
English
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ECMAScript
When Navigator 2 made its debut, it provided built-in client-side scripting with JavaScript. Despite what its name might imply, the language was developed at Netscape, originally under the name LiveScript. It was a marketing alliance between Netscape and Sun Microsystems that put the “Java” into the JavaScript name. Yes, there are some striking similarities between the syntax of JavaScript and Java, but those existed even before the name was changed.
Internet Explorer 3 introduced client-side scripting for that browser. Microsoft provided language interpreters for two languages: VBScript, with its syntax based on Microsoft’s Visual Basic language, and JScript, which, from a compatibility point of view, was virtually 100% compatible with JavaScript in Navigator 2.
It is important to distinguish a programming language, such as JavaScript, from the document object model that it scripts. It is too easy to forget that document objects are not part of the JavaScript language, but are rather the “things” that programmers script with JavaScript (or VBScript). The JavaScript language is actually more mundane in its scope. It provides the nuts and bolts that are needed for any programming language: data types, variables, control structures, and so on. This is the core JavaScript language.
From the beginning, JavaScript was designed as a kind of core language that could be applied to any object model, and this has proven useful. Adobe Systems, for example, uses JavaScript as the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.