JS shart operatorlari

Shartli operatorlar

Shart operatorlari turli shartlar uchun turli amallarni bajarish imkonini beradi.

Shartli iboralar rost yoki yolg‘on shartlariga qarab turli xil kodlarni ishlatadi.

Conditional statements include:

if
if...else
if...else if...else
almashtirish
ternary (? :)

Shart operatorlaridan qachon foydalanish kerak

Bajariladigan kod blokini belgilash uchun if dan foydalaning, agar belgilangan shart true bo‘lsa
Bajariladigan kod blokini belgilash uchun else dan foydalaning, agar bir xil shart false bo‘lsa
Sinov uchun yangi shartni belgilash uchun else if dan foydalaning, agar birinchi shart false bo‘lsa
Bajariladigan ko‘plab muqobil kod bloklarini belgilash uchun switch’dan foydalaning
if...else uchun qisqa yozuv sifatida (? :) (ternar) operatoridan foydalaning

if operatori

Bajariladigan kod blokini belgilash uchun if dan foydalaning, agar belgilangan shart true bo‘lsa.

Sintaksis

if (condition) {
// code to execute if the condition is true
}

else operatori

Bajariladigan kod blokini belgilash uchun else dan foydalaning, agar bir xil shart false bo‘lsa.

Sintaksis

if (condition) {
// code to execute if the condition is true
} else {
// code to execute if the condition is false
}

else if operatori

Sinov uchun yangi shartni belgilash uchun else if dan foydalaning, agar birinchi shart false bo‘lsa.

Sintaksis

if (condition1) {
  // code to execute if condition1 is true
} else if (condition2) {
  // code to execute if the condition1 is false and condition2 is true
} else {
  // code to execute if the condition1 is false and condition2 is false
}

switch operatori

Bajariladigan ko‘plab muqobil kod bloklarini belgilash uchun switch’dan foydalaning.

Sintaksis

switch(expression) {
  case x:
    // code block
    break;
  case y:
    // code block
    break;
  default:
   // code block
}

Ternar operator (? :)

if...else uchun qisqa yozuv sifatida (? :) (ternar) operatoridan foydalaning.

Misol

condition ? expression1 : expression2

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