What's the difference between JavaScript and JScript?

javascript jscript
Brian G picture Brian G · Sep 25, 2008 · Viewed 112.1k times · Source

I have always wondered WHaT tHE HecK?!? is the difference between JScript and JavaScript.

Answer

Zach picture Zach · Sep 25, 2008

Just different names for what is really ECMAScript. John Resig has a good explanation.

Here's the full version breakdown:

  • IE 6-7 support JScript 5 (which is equivalent to ECMAScript 3, JavaScript 1.5)
  • IE 8 supports JScript 6 (which is equivalent to ECMAScript 3, JavaScript 1.5 - more bug fixes over JScript 5)
  • Firefox 1.0 supports JavaScript 1.5 (ECMAScript 3 equivalent)
  • Firefox 1.5 supports JavaScript 1.6 (1.5 + Array Extras + E4X + misc.)
  • Firefox 2.0 supports JavaScript 1.7 (1.6 + Generator + Iterators + let + misc.)
  • Firefox 3.0 supports JavaScript 1.8 (1.7 + Generator Expressions + Expression Closures + misc.)
  • The next version of Firefox will support JavaScript 1.9 (1.8 + To be determined)
  • 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.

Related questions

How to replace comma with a dot in the number (or any replacement)

I could not found a solution yet, for replacing , with a dot. var tt="88,9827"; tt.replace(/,/g, '.') alert(tt) //88,9827 i'm trying to replace a comma a dot thanks in advance

Read More
Need to generate prime numbers in JavaScript

I am writing a JavaScript to generate prime numbers from 2 to 100. However It doesn't work and can't figure it out. will you help me please? var array = new Array(100); for (var i=2 ; i<=array.length-1; i++) { if((i%2===0) || (i%3===0)) …

Read More
Run a bat file from javascript

I'm trying to run a bat file using javascript. I've tried using powershell but it didn't seem to work properly. Here is the code I tried: var oShell = WScript.CreateObject("WScript.Shell"); oShell.Exec("D:"); oShell.Exec("cd dir"); oShell.…

Read More