Nickzom:

It removes the non numeric on computation. I made it that way on purpose.
Thanks for discovering anyway but a user can easily make mistakes so I filter the non numericals during computation. You can try it out and see.

danvery2k6:



Tried this this morning. Can you just reject input that contains non numerics?

I'm not an expert in the field, you can ignore my opinion

ekeroyal:
Clean job Nickzom. Please can you share link to what resources you use?

Nickzom:
When I learnt JavaScript back in 2013, Everybody were telling me it is just a script language - client sided and cannot be used to write heavy applications.

Guess what I proved all of them wrong and I am kinda rocking on it in building all my web applications. I built my website from scratch and believe me my website is totally a HEAVY application. Instead of using java to create applets to integrate into my php. I used JavaScript all through.

Not only did it make my web application more effective and reliable, it made it super fast.

My web application does calculations and shows the steps in a very unique way.

Thanks to JavaScript, I thought you programmers should know.

You can see my work at www.nickzom.com

Have a nice day!

Nickzom:


Please clarify me on what you mean by resources.

ekeroyal:

For tutorials I mean, besides codacademy.

Nickzom:


It removes the non numeric on computation. I made it that way on purpose.

Thanks for discovering anyway but a user can easily make mistakes so I filter the non numericals during computation. You can try it out and see.

Nickzom:

OK I bought some coding ebooks - soft and hard copy. I also made use of stack overflow.

Internet and world wide web by Deitel is the major book I use.

Nickzom:
When I learnt JavaScript back in 2013, Everybody were telling me it is just a script language - client sided and cannot be used to write heavy applications.

Guess what I proved all of them wrong and I am kinda rocking on it in building all my web applications. I built my website from scratch and believe me my website is totally a HEAVY application. Instead of using java to create applets to integrate into my php. I used JavaScript all through.

Not only did it make my web application more effective and reliable, it made it super fast.

My web application does calculations and shows the steps in a very unique way.

Thanks to JavaScript, I thought you programmers should know.

You can see my work at www.nickzom.com

Have a nice day!

Nickzom:
When I learnt JavaScript back in 2013, Everybody were telling me it is just a script language - client sided and cannot be used to write heavy applications.

Guess what I proved all of them wrong and I am kinda rocking on it in building all my web applications. I built my website from scratch and believe me my website is totally a HEAVY application. Instead of using java to create applets to integrate into my php. I used JavaScript all through.

Not only did it make my web application more effective and reliable, it made it super fast.

My web application does calculations and shows the steps in a very unique way.

Thanks to JavaScript, I thought you programmers should know.

You can see my work at www.nickzom.com

Have a nice day!

Nickzom:
When I learnt JavaScript back in 2013, Everybody were telling me it is just a script language - client sided and cannot be used to write heavy applications.

Guess what I proved all of them wrong and I am kinda rocking on it in building all my web applications. I built my website from scratch and believe me my website is totally a HEAVY application. Instead of using java to create applets to integrate into my php. I used JavaScript all through.

Not only did it make my web application more effective and reliable, it made it super fast.

My web application does calculations and shows the steps in a very unique way.

Thanks to JavaScript, I thought you programmers should know.

You can see my work at www.nickzom.com

Have a nice day!

micodon:


No matter how powerful it is, it is still a scripting language like Perl, PHP, Python, Ruby, Lua and the likes.
Calling it a scripting language does not diminish its power, it just tells the world how it is executed -- BY BEING INTERPRETED.

maekhel:
So?

micodon:


So, saying JavaScript is more than a scripting language is wrong

Nickzom:


I understand you brother! But you must know this. When JavaScript was created it was created to be a script language but as of now it can be used to perform way more function than a script. For instance during its creation no one thought for ones it could be used to code up a relational database but now you can effectively make use of JavaScript to do that.
This is just one instance there are so many new features embedded into JavaScript every now and then.
Hope you understand brother

Nickzom:
When I learnt JavaScript back in 2013, Everybody were telling me it is just a script language - client sided and cannot be used to write heavy applications.

Guess what I proved all of them wrong and I am kinda rocking on it in building all my web applications. I built my website from scratch and believe me my website is totally a HEAVY application. Instead of using java to create applets to integrate into my php. I used JavaScript all through.

Not only did it make my web application more effective and reliable, it made it super fast.

My web application does calculations and shows the steps in a very unique way.

Thanks to JavaScript, I thought you programmers should know.

You can see my work at www.nickzom.com

Have a nice day!

micodon:


Like I have said, a scripting language is defined NOT by its functionalities, but by the way its executed. scripting Languages are called 'scripting' cos they are interpreted.

Python, PHP, Ruby can all connect to database systems....They Re scripting languages. It's the same
principle with javascript?.

For example, When you write a c++ app, you have to precompile it before you can run it. But when you write a JavaScript app, say a nodejs app, you just drop it in, call the script and nodejs with its V8 engine reads through the script and interprets the script to the machine.

AGAIN, SCRIPTING LANGUAGES ARE CALLED SO COS THEY ARE DESIGNED TO BE INTERPRETED.

Nickzom:


I agree with you mehn but you still do not understand what I am saying.
I am saying that JavaScript is not meant to be used to just help make a website dynamic but it can also be used in the development of intense softwares and web applications. That's all I am saying. I am not saying it is not a script. We all know it is a script. It is even on the name javaSCRIPT.

Olumyco:
JavaScript again! JavaScript again! The most misunderstood, very subtle programming language in d World.
As for Scripting lang. Micodon u r correct but alot av changed with hw JavaScript is implemented today.
For ur info JavaScript is now being compiled at runtime with a principle known as Just-In-Time(JIT) Compilation. Most JavaScript Engines in our browsers, servers and so on now do JIT Compilation. That is, JavaScript codes are compiled to native machine codes at runtime.
We av different JavaScript Engine - V8, Rhino, Spidermonkey, SquirrelFish Extreme (SFX), Chakra etc.

V8 JavaScript Engine
This engine runs inside Chrome browser, Nodejs. It does JIT Compilation. It executes JavaScript code by compiling it to native machine code at runtime. This is d reason why it is very fast and ur Google Chrome is rated high as d fastest browser though can be challenged by Safari which run SFX.

Rhino
Rhino runs in Rhino Shell and also used for server - side JavaScript. This Engine first compiles to bytecode an intermediate code just like Java Virtual Machine (JVM) after which d JIT part of d engine execute d bytecode by compiling it native machine code at runtime.

Spidermonkey
This which came from thesame source as Rhino, Mozilla also does JIT compilation. Same as Rhino. It runs inside Firefox browser, Adobe softwares etc.

SquirelFish Extreme (marketed as Nitro, formerly JavaScriptCore)
It runs in Safari and Apple products. It does JIT Compilation. It compiles JavaScript code to native machine code at runtime.

It all continues like that.......... you can research more on JIT Compilers. That is where life is now. Even Java, .net Framework lang etc av woken up to JIT compilation issue. JIT Compilation helps programming lang to still maintain that 'Java Paradigm' Write Once Run Anywhere (WORA)
Pls don't forget to implement ur Programming Language based on JIT Compilation if u eventually develop one.
Thanks.

micodon:


i knew someone was gonna bring up JIT. JIT does not mean that the language is no longer a scripting language. You are still misunderstanding the concept of Interpretation.

First Know that technically speaking, every language has to be compiled to machine language at a particular point in time.

What is JIT for? JIT is to improve performance.

Imagine life without JIT. Imagine SCRIPT A. Imagine it is to be executed for every request to your server. Now, what if there are 10 million users in 5 seconds? Would it be efficient for the Javascript engine to interpret this same script 10 million times in 5 seconds? NOOOOOO? That's a performance bottleneck. THAT'S WHAT JIT IS MEANT TO REMOVE. Instead of interpreting this script 10 million times, the JIT compiler gets it and INTERPRETS IT ONCE and THEN STORES THE INTERPRETED CODE (call it the compiled code) IN SHARED MEMORY. Now, for other subsequent requests, the Language runtime checks if the requested script has been compiled and saved. if, yes, It executes the already compiled file. If NO, it fetches the script and sends to the JIT compiler to do its job, then it executes.

If you look under the hood. turn restart your system, you'll see that the script will be JIT compiled again.

The main point is: IT IS STILL INTERPRETED BY THE JIT COMPILER. As long as it is not precompiled like languages like Java, C++, etc....it is a SCRIPTING LANGUAGE.

PHP 7 has a JIT compiler..PHP is still a scripting language
HHVM has a JIT compiler...PHP is still a scripting language.
Python compiles its scripts to .pyc files and stores on disk...Python is still a scripting language.


same with javascript. JavaScript remains a scripting language

Languages can be broadly classified into two: Compiled and Interpreted.
JavaScript, PHP, Python, Ruby, etc fall under Interpreted Languages...That's why they are called scripting languages. They are not precompiled by the developer.

Olumyco:


Thanks for the response. Very Informative.
But I disagree with u on d following statements.

1. That all programming Languages compile to machine code at one point or the other.

2. That JIT Compiler interprets machine code.

3. That we av just Two categories of lang (Interpreted & Compiled).

.......... ................ .................
In today's programming I want you to know that any language can be compiled or Interpreted. Your compiler / interpreter dictates dis. Anyway by default specification by d creator of d language he may choose to implement the language by interpretation or compilation. But that does not stop anyone from building his own compiler or interpreter for the language. It may interest u to know dat C++ can compile to JavaScript. Infact there is even a compiler for it. U can check it out. Interpreter too can be developed for any language. Rhino compiles JavaScript to byte code which is then interpreted just as Java/JVM.

See, Programming World is so dynamic and sometimes might b confusing especially with choice of of words (Terminologies).

Now it seems I will av to clarify what is meant by compilation and Interpretation.
Compilation simply involves translation or changing of one code to another code. You can change a source code to machine code (Bit) or to byte code or to another's programming language source code.

Interpretation simply involves parsing of code without changing the code to another code or to machine code. You can parse (interpret) source code, byte code, threaded code but not machine code. Why would u need to parse a language that itself is the machine language? No.
Mind u I still agree that the source code is converted to machine language . That is, interpreted to machine code. But to put it beta I want to say an Interpreter reads/parses d instruction and then call native machine code to actualize the instructions. That is, it talks to the native machine code to execute the instruction (source code). It is Neva transformed.

Back to those statements
1. It is wrong to put it that way. If I don't compile the source code to machine lang wit a compiler, then hw can I av it in native code? Interpreter parses or d so called converts source code to machine code.
"to compile" is different from "to convert". Pls note.

2. JIT Compilers do not interpret machine code. Hw can u interpret native CPU code?
I agree that it does interpret but dat is still source code. JIT at runtime for the first time interprets the source code as a normal interpreter and at the same time compiles the functions of the code to native machine code. After 2, 3 , 4 times d compiler begins to run the functions from d already stored CPU code. You already said dis but note dat compiled code is different from interpreted code.

3. If u say we av Compiled Languages and Interpreted Languages, under which language would u classify Java and C#?
Also on d issue of JIT Compilers, are they Compilers or Interpreters?
I do not dispute d fact dat they are embedded inside Interpreters but based on how they operate are dey compilers or interpreters. Infact anything can b put inside an interpreter/compiler.

Ur answers to these questions should help maintain a balance on d contending subject.

Thanks

dhtml18:
^^that is good, keep up the good work.