What’s new in ECMAScript 5

Updates:

• JavaScript’s strict mode: a summary
• es5-shim: use ECMAScript 5 in older browsers

ECMAScript is a language standard that is implemented as JavaScript in most web browsers (it’s called JScript in MS Internet Explorer). Here are two good links to get up to date on the latest version, ECMAScript 5:

• “ECMAScript 5: The Definitive Slides” by longtime O’Reilly author David Flanagan. There are several useful additional links at the end.
• “ECMAScript 5 compatibility table” shows what is already available in browsers and it is quite a lot. Nice to see that the IE9 column is very green.

More ECMAScript 5 summaries:

• ECMA-262, 5th Edition
• ECMAScript 5: What’s New in JavaScript Programming