****Javascript 2024 easier version****

Assalomu aleykum qadrli qadrdonlar bilim va malakangizni oshirishda ozgina bo'lsa ham o'z xissamizni qo'shsak hursand bo'lamiz😉😉😉

inshalloh hammaga manfaatli bo'ladi degan umiddaman.

-Lesson-1

Introduction

JavaScript Nima ?

• JavaScript- bu dasturlash tili.
• Statistics- https://radixweb.com/blog/top-javascript-usage-statistics

Nima uchun JavaScript?

• JavaScript yuqori darajadagi dynamic, single-thread va web browser ni qo’llab quvvatlaydigan yagona dasturlash tili.
• U interaktiv va dinamik veb saytlarni yashash uchun ishlatiladi.

Javascript o’rganishimiz uchun zarur

• HTML
• CSS
• Bootstrap
• Sass
• Javascript imkoniyatlari
• Front end
• Back end
• Mobil ilovalar
• O’yinlar, web saytlar, mobil dasturlar ishlab chiqarish mumkin.

Dasturlash muhitini sozlash

• Visual Studio Code
• Node.js
• Live Server
• Material Icon theme
• Community Material Theme

-Lesson-2

Foydalanuvchi bilan aloqa

• Console.log
• Alert
• Prompt
• Confirm

Variables-o’zgaruvchilar

O’zgaruvchi -bu o’zida qiymat saqlovchi konteyner.

• Declare qilish
• Var, const, let
• Difference of declaring
• Naming variables
• CamelCase
• Under_Score
• How we can not give name variables

- with key words

- with numbers

• comment
• // -bir qatorlik
• /**/- Ko’p qatorlik

-Lesson-3

Data types- ma’lumot turlari

• Primitive- string, number, boolean, null, undefined,BigInt, symbol
• nonprimitive- Object(object, array, date. Function)

-Lesson-4

String data type- bu matnli tip

• E’lon qilish turlari - “”; ‘’; ``;
• \n - new line in single and double quotes
• \t -tab
• Str.length
• Accesing character
• str[I];
• Str.at(i)
• Str.charAt(0)
• the last character
• str[str.lenght-1]
• Str.at(-1)
• String methods
• IndexOf - boshidan elem ni index ni qidiradi
• lastindexOf - oxiridan elem ni index ni qidiradi
• Search - qiymatni qidirib aniqlanish indexni qaytaradi
• Includes - true and false qiymat qaytaradi mavjudmi degani
• Slice
• Splice
• Substring
• Substr
• Replace
• Split
• Repeat
• startWith
• endsWith
• toLowercase
• toUppercase
• Trim

-Lesson-5

Number data type - bu raqam tip

• Declaring number
• Extra large or extra small number -> e
• The maximum number of decimal- 17;
• Adding numbers to string 10+’10’=1010
• Converting string to numb
• “100”/’10’ = 10 //number
• ’10’*’10’=100 // number
• “100”-’10’=90 //number
• “100”+10 =10010 // string
• NAN- not a Number
• NAN- is also number
• Type of NAN return number
• isNAN() - global function to check if it is not a number
• isNaN(5) - false
• isNaN(‘5’) - true
• Infinity
• It is also a number
• 2/0 =>infinity
• Type of infinity is a number

Number methods

• toString() - coverts numbers to string
• toFixed() - yaxlitlab string qaytarib bread
• Number() converts variables to number
• Number(true) - 1
• Number(fasle) - 0
• Number(“10”) - 10
• Number(“ 10”) -10
• Number(“10 ”) -10
• Number(“ 10 ”)-10
• Number(10.33)-10.33
• Number(“10,33”) -NAN
• Number(“10 33”)-NAN
• Number(“John”)-NAN

Lesson_6

Operators

• Arithmetic Operators - +; -;*;/
• Assignment Operators - =; +=; -=; *=; /=;
• Comparison Operators - ==; ===; !=; <=; >=; >;<;
• Logic Operator &&;||;

Lesson_7

• if else
• Ternary operator
• Switch case

Lesson_8

LOOPS

• For
• While
• Do while

Lesson_9

Function

• Function Declaration
• Function Expression
• Arrow function

Lesson_10

Object

Lesson_11

Array