Document getElementById("p1") p ga p1 class berilgan p ni js dan boshqarish

1. 
   const p = document.getElementById("p1") – p ga p1 class berilgan p ni js dan boshqarish
   
2. 
   const button = document.querySelector("#click");bu ham bir xil faqat buttonga id berilgan
   
3. 
   P.InnerHTML = <“Span class=’qwer’”>qwertt - jsdan turib htmldagi p ni ozgartirish
   
4. 
   p.textContent = “dwwfwef” --- faqat textni o’zini ozgartirish
   
5. 
   p.className = “ “ --p ga class berish
   
6. 
   let person = {
   

person .nomi = - -nuqta yangi nom qoyish uchun ishlatiladi.(person-umumiy) }

7. 
   Person[‘nomi’]= bu nomi aniq bo’lmaganda ishlatiladi bu ham person ichida bo’ladi
   

funksiyani chaqirish uchun ishlatiladi
FUNKSIYALAR

• 
  function nomi(fristName,lastName) {
  

1. 
   console.log('Assalom alykum, '+ fristName + lastName); }
   
2. 
   nomi('Ahmat' , 'Abdullayev');
   
3. 
   nomi('Hamid');
   
4. 
   function square(number) {
   
5. 
   return number*number; } -- 2 ni kvatratini hisoblash
   
6. 
   console.log(square(2));
   

MATEMATIK FUNKSIYALAR

1. 
   math.PI – pi soni
   
2. 
   math.round(6.7) – butun songa aylantiradi
   
3. 
   math.floor(5.1) – butun qismini oladi
   
4. 
   math.pow (2,3) – 2 ni 3 chi darajasi
   
5. 
   math.random() – 0 va 1 orasida ixtiyoriy qiymat qabul qiladi
   

BARCHASI STRING(so’zlar) TURI UCHUN

• 
  let nom = 'Assalom alaykum';
  

1. 
   console.log(nom[3]); -- 4-harfni chiaradi
   
2. 
   console.log(nom.includes('al')); -- nom dagi al harfi izlanadi agar bolsa true chiqaradi
   
3. 
   console.log(nom.startsWith('Assolom')); -- shu sozdan boshlanganligini aniqlaydi
   
4. 
   console.log(nom.indexOf('kum')); -- so’z nechinchi nomerdan boshlanganligi
   
5. 
   console.log(nom.toUpperCase()); -- barcha xarflarni katta xarf aylantiradi
   
6. 
   console.log(nom.toLowerCase()); -- barcha xarflarni kichik xarflarga aylantiradi
   
7. 
   console.log(nom.trim()); -- boshi va oxiridagi probellarni olib tashlaydi
   
8. 
   console.log(nom.replace('salom' , 'xayr')); -- salom sozini xayr soziga almashtirib beradi
   
9. 
   console.log(nom.split(' ')); sozlarni bolib tashlaydi probel bor joylarni ajratadi
   

TO’PLAMLAMLAR UCHUN

• 
  let numbers = [3, 4];
  

1. 
   numbers.push(5,6); -- toplam oxiriga yangi element qo’shish
   
2. 
   numbers.unshift(1); -- toplam boshiga yangi element qo’shish
   
3. 
   numbers.splice(x, y, z); -- (x)-nechinchi nomerdan (y)-nechta ochirish (z)-yangi element qo’shish
   
4. 
   numbers.pop(); -- toplam oxiridagi elementni o’chiradi
   
5. 
   numbers.shift();--toplam boshidagi elementni o’chiradi
   
6. 
   numbers.splice(x,y); -- (x) –nechinchi nomerdan (y)- nechtasini ochirish
   
7. 
   console.log(numbers.indexOf(3)); -- 3-nomerdagi index nomeri
   
8. 
   console.log(numbers.includes(4)); -- 4 sonini izlanadi bo’lsa true
   
9. 
   console.log(numbers);
   

• 
  let frist = [1,2,3];
  

• 
  let two = [4,5,6];
  

10. 
    let theree = frist.concat(two); -- to’plamlarni birlashtirish
    
11. 
    console.log(theree);
    

• 
  let fo = theree.slice(x,y); -- to’plamlarni ajratish (x) dan (y) gacha ajratib oladi
  

12. 
    console.log(fo);
    
13. 
    let five = theree.join("-"); -- to’plamlarni birlashtiradi stringga aylantiradi – bilan ajratib chiqadi
    
14. 
    console.log(five);
    

• 
  let numbers = [2,3,5,1,4];
  

15. 
    numbers.sort(); -- toplamni tartiblaydi (1,2,3,4,5)
    
16. 
    console.log(numbers);
    

• 
  let numbers = [2,3,5,1,4];
  
• 
  numbers.reverse(); -- toplamlarni teskari tartiblaydi (5,4,3,2,1)
  

console.log(numbers);

• 
  let numbers = [2,3,-5,1,4];
  

1. 
   let isAllPositive = numbers.every(function(number) { -- birortasi shartni qanotlantirmasa false qaytaradi.
   
2. 
   return number>=0; });
   
3. 
   console.log(isAllPositive);
   

• 
  let numbers2 = [2,3,-5,1,4];
  

1. 
   let atLeadOnePositive = numbers2.some(function(number){ -- aqalli birortasi shart qanotlantirsa true qaytaradi.
   
2. 
   return number>=0; });
   
3. 
   console.log(atLeadOnePositive);
   

• 
  let filtered = numbers.filter(function(number){ -- shartni qanotlantiruvchilarni alohida to’plamga ajratib beradi.
  

1. 
   return number>=0; });
   
2. 
   console.log(filtered);