My question is what is debugging and how do I debug my codes?

Question

Hello fellow students.
I am new to this platform and also new to programming languages as well.
My question is what is debugging and how do I debug my codes?

My second question is what are the below signs used for?

( ),  =>,   { },  ==,  ===,  !=,  !==, >=,  <=, [ i ] ,

Hoping to hear from someone soon. Thanks

Answer 1

Are you learning Javascript? It would not be my choice of first language to learn (see why).

Debugging

When your code does not work correctly, it is often referred to that it has a bug. Searching for a bug in a program is called debugging. After you found the bug, you need to understand why it happens and how the program should correctly behave. Only after this can you apply the fix.

Debugging JavaScript is not as simple as C/C++, C#, Java, as JavaScript is run in your browser.

JavaScript is typically debugged via a browser extension (e.g. Chrome DevTools).

Here is also a bit of info on JavaScript debugging.

Getting started

Again, I would advise you to learn a different language than JavaScript for your first language (e.g.: C, C++, C#, Python, Java; hell, even the good old Pascal would be better for new starters than JavaScript) to make your life easier.

Regardless of what language you learn, you'll need to find some nice online tutorials, e.g.:

• https://www.w3schools.com/
• https://www.tutorialspoint.com/
• https://www.programiz.com/
• https://www.geeksforgeeks.org/

and many more.

For your operator questions, I'll refer you to one of the pages on the sites above: https://www.w3schools.com/js/js_operators.asp.

What is not mentioned on that very page are the following:

(): used for many things, e.g. parenthesis for expressions; function arguments list

function CalculateAverage(a, b) {
  return (a + b) / 2;
}

{}: defining a scope, e.g. the body of a function (see above)

=>: lambda function definition

average = (a, b) => (a + b) / 2;
console.log(average(3, 8));

[]: indexing (of an array or list); most programming languages use 0-based indexing

let names = ['Albert', 'Betty', 'Cain']
console.log('second name:', names[1]);

All of these will be very shortly explored if you follow the tutorials of any of your preferred tutorials site.

Good luck!

Answer 2

In simple terms debugging is to find the errors in your written program. you can debug your code from your compiler. It is provided in every compiler, 

() is used for inserting strings in functions. >=, ==, !=. <= all are comparing operators, that is to compare the values of distinct values. { } is used after a function, content of function is written in it. [ i ] is used in arrays.