JavaScript vs JScript!

[Poop_Shoot]

I would say well enough that I know Javascript but I have been looking in ASP and ASP.net and I think I would like to use JScript since I know Javascript or are they absolutly different languages. Im pretty sure my choices are JScript, VBscript, C#, C++! But I would like to not have to learn a whole other language!


Sorry I posted in wrong forums belongs in ASP could someone delete or move?

[requestcode]

jscript is Microsofts version of JavaScript. There are some differences, but if you know JavaScript then you should have not trouble with jscript.

[Mike Borozdin]

Well, JavaScript can hardly be called a serious language. Though its syntax constructions are the same as in C like languages.

I think, the fact that you know JavaScript doesn't mean that you should learn JScript.NET and that it will be pretty easier. JScript.NET isn't similiar to JavaScripot, except syntax. JScript.NET is strongly-typed completely object oriented language as well as any other .NET language. So if you aren't familiar with concepts of OOP, you will hate to learn it.

And I highly recommend you to learn C#, it' the most powerful .NET language.

[beetle]

Mika makes a good point. Don't confuse JScript with JScript.NET. Just by knowing JScript (by way of knowing JavaScript) doesn't mean you can pick up JScript.NET.

[nickc]

Make sure when you specify the language in your scripts that you specify Javascript rather than jscript as non-microsoft browsers won't understand your scripts.

Nick

[Poop_Shoot]

Yes I looked at C# it seems to be some what the same as Javascript syntax wise! One thing I noticed is you have to define data type such as string,integer,boolean why do you not have to do this in Javascript! I tried using C# ans did not get very far!

[beetle]

Javascript is a loosely-typed scripting language.

C# is a strongly-typed programming language.

The both use C-style syntax - but that's probably all they have in common.

[Poop_Shoot]

But they even have some of the same constructs

toString()

For Example

[beetle]

Ya - some of that real common stuff you will see in both - and many other places as well.

[Cam]

C# is a strongly-typed programming language.

As is JScript and every other .NET language out there so don't think you can get away with anything

[Poop_Shoot]

What do people mean by " loosely-typed " & " strongly-typed "?

[beetle]

Well, the primary difference (AFAIK) is in how variable data types are handled. In javascript - although there are 7 or so different datatypes (Boolean, Number, String, Object, Function, Array, and Undefined. Some references will tell you that null is a type, but it's actually of type object) each one of them is implemented as an object, behind-the scenes. That's why even primitives, liks Strings, have methods (properties that are functions), such as indexOf and substring.

Strongly typed langauges require much more control and input from the programmer as to what the type of a variable is - when being declared, passed, received, or otherwise manipulated. Javascript doesn't require that you specify a string - you just use a string literal and javascript knows it's a string.

var myString = "some text";

That doesn't mean that javascript doesn't have a constructor for strings

var myString = new String( "some text" );

Basically, the type of the variable (in javascript) is implicit. For strongly -typed langauges, the variable type must be explicit.

I'm sure someone with more experience in a strongly-typed language can give you some better detail.

[Poop_Shoot]

Thanx once again bettle you have provide so much help for me, in many different forums! So basically you have to specify!

In VB:
Dim i As Integer

C#:
int i;

JScript:
var i : int;

Basically asigning i as an Integer! Is this correct!

[Jeff Lange]

Yes, it basically means, every variable has a type, a function for working with strings will not work with an integer, for example.

You must declare every variable, and what it's type is, and that variable cannot contain anything that is not of the assigned type.