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javascriptjscript

What's the difference between JavaScript and JScript?

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

Solution

  • 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.