🔢
Type System Fundamentals

Primitive Types

string, number, boolean
💡 Primitive, types, "BASIC, BUILDING, BLOCKS" hain — JAISE, LEGO, mein, BASIC, SHAPES, (SQUARE, CIRCLE) HOTE, HAIN, JINSE, COMPLEX, STRUCTURES, banaye, jaate, hain, VAISE, hi, string, number, boolean, se, COMPLEX, types, banaye, jaate, hain.

string, TEXT, VALUES, ke, liye, hai. number, SAARE, NUMBERS, (INTEGERS, aur, DECIMALS, DONO) ke, liye, EK, HI, TYPE, hai — JavaScript, ki, TARAH, ALAG-ALAG, INT/FLOAT, types, NAHI, HAIN. boolean, true/false, ke, liye, hai.

null, aur, undefined, ke, apne, ALAG, types, HAIN — strict, mode, mein, ("strictNullChecks") YE, EXPLICITLY, HANDLE, karne, PADТE, HAIN, ANY, OTHER, type, ke, VARIABLE, mein, ASSIGN, hone, se, PEHLE.

let city: string = "Mumbai";
let temperature: number = 32.5;
let isRaining: boolean = false;
let nothing: null = null;
let notDefined: undefined = undefined;
🔢
Primitive, types, "BASIC, BUILDING, BLOCKS" hain — JAISE, LEGO, mein, BASIC, SHAPES, (SQUARE, CIRCLE) HOTE, HAIN, JINSE, COMPLEX, STRUCTURES, banaye, jaate, hain, VAISE, hi, string, number, boolean, se, COMPLEX, types, banaye, jaate, hain.
1 / 2
⚡ झट से Recap
  • string, number, boolean = primitive types, basic, values, ke, liye
  • TypeScript mein, number, EK, HI, TYPE, hai (int/float, alag, nahi)
  • null/undefined, ke, apne, ALAG, types, hain
इस page में (2 subtopics)

bigint, EXTREMELY, LARGE, integers, ke, liye, hai (jaise, 123n) — number, ki, PRECISION, LIMIT, se, PAR, jaata, hai. symbol, UNIQUE, identifiers, banaне, ke, liye, hai — RARELY, USE, hote, HAIN, MOST, applications, mein.

let big: bigint = 100n;
let sym: symbol = Symbol("id");

Primitive, types, ke, ALAWA, TypeScript, "literal, types" bhi, support, karta, hai — jaise, let direction: "up" | "down", VARIABLE, ko, SPECIFIC, string, VALUES, tak, RESTRICT, karta hai, GENERIC, string, TYPE, ki, JAGAH.

💡Tip: Literal, types, aksar, union, types, ke, saath, COMBINE, kiye, jaate, HAIN — jaise, STATUS, VALUES, ("loading" | "success" | "error") ko, STRICTLY, TYPE, karne, ke, liye.