Just different names for what is really ECMAScript. John Resig has a good explanation.
Here’s the full version breakdown:
- Opera supports a language that is equivalent to ECMAScript 3 + Getters and Setters + misc.
- Safari supports a language that is equivalent to ECMAScript 3 + Getters and Setters + misc.
As far as I can tell, two things:
- ActiveXObject constructor
- The idiom f(x) = y, which is roughly equivalent to f[x] = y.
From Wikipedia: http://en.wikipedia.org/wiki/Jscript
JScript is the Microsoft dialect of
the ECMAScript scripting language
implementation of the ECMA
specification), JScript, and
ECMAScript are very similar languages.
used to refer to ECMAScript or
The languages are identical, both are dialects of ECMA script, the after-the-fact standard.
Although the languages are identical, since JScript runs in Internet Explorer, it has access to different objects exposed by the browser (such as ActiveXObject)
According to this article:
Wikipedia has this to say about the differences.
There are some code differences to be aware of.
"string".substr(-1) returns “g”, whereas in JScript:
"string".substr(-1) returns “string”
It’s possible to do
Internet Explorer uses JScript(Chakra) engine for their browser and others do so and they all uses common core.
Jscript is a .NET language similar to C#, with the same capabilities and access to all the .NET functions.
I run .ASPX JScript when I require Image and Binary File functions, (among many others) that are not in Classic ASP. This code is unique for the server, but extremely powerful.
Java is an Oracle product and used to be a Sun product.
Oracle bought Sun.