Hey Welcome, Techies👋🏼

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Hello everyone, my name is Aryan Sharma, and I hope you're all doing well.

I'm thrilled to begin this JavaScript blog on Strings in JavaScript for absolute beginners.

You can find my other blogs on JavaScripthere↗️

Javascript Strings

Unlike strings in C, C++; character is stored in a string with quotes ""

The Quotes

A string in JS is the character written inside quotes.

Strings can be enclosed within either single quotes, double quotes, or backticks:

 let name = 'Aryan Sharma';

 let first_name = "Aryan";

 const age = 19;

 console.log(`I am ${age} years new 😁`); // Template string

Template Strings

Templates were introduced with ES6. Templates are strings enclosed in backticks.

Why do we use this?

To introduce the mathematical operation in the Javascript statement with dollar sign ${}.

let marks = 95;
let total_marks = 100; 

console.log(`I got ${marks} out of ${total_marks`}

Special characters

There are some other characters like newline operator\n which denotes a new line or a line break simply.

let Full_name = "A\n * B\n * C\n * D";

alert(guestList);

Output:-

A
B
C
D

There are some more characters which are :

\r
\\
\t
\b
\f
\v

You have homework to study about each of them on the Internet 🔎

Length of a String

We can also find the length of a string using the in-built length property.

let name = "Aryan Sharma";
let length = name.length;

Output
>> 12

**I am expecting you to know about arrays

If not ...**

Accessing characters

We use [] to access characters in a string.

Such as a string name "Aryan"

then, name[0] = A
name[1] = r
name[2] = y
name[3] = a
name[4] = n   // 1 can be said as name.length() - 1

We can also say .at(0).at(1).at(2).at(3) ...

Also, .at(-1) means the last character, and .at(-2) is the one before it, etc.

⚠ But we can not use a negative index inside [brackets], it returns undefined

Properties and methods of string

Methods

These Javascript methods are predefined to the browser of our system.

.uppercase

console.log(Aryan.toUpperCase());   //ARYAN

.lowercase

console.log(Aryan.toLowerCase());   //aryan

Immutable

Unlike, arrays and other data, we can not change the character of a string.

Let’s try it to show that it doesn’t work:

let str = 'Gujarat';

str[5] = 'o'; // error
console.log(str[5]);   // doesn't work // a

Comparing

You might have to compare strings in your program or need to do so.

Let's understand how to do

A lowercase alphabet is always greater than the upper one.

alert( 'a' > 'Z' ); // true

you might be thinking how can we compare two characters, they are not even in number, and how did a > A.

Here's a thing called ASCII values: you might have heard about it otherwise read here

So, the uppercase letter 'A' is 65, while the lowercase letter 'a' has an ASCII value of 97.

If you want to know the numbers of other alphabets, 👇🏼

console.log(fromCodePoint(a))  // this function will tell the value of a

And this is to this blog! That's the ending for this one!

Let's meet at another one!

I Hope you loved this blog 💖💖

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WTF are Strings in JS?