2a-fundamental-dataTypes.js

// 8 basic Data Type

// a. number
let n = 123;
console.log(n);
// present both integer n floating
let infini = 1/0;
console.log(infini); // output : infinity

//NaN represent computational error and it is sticky no matter-
// what you do math operation
console.log("not number" / 2); // output : NaN

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// b. BigInt

// when number cant represent values larger than 2^53 -1
// we need store larger
// check this anomaly :
console.log(9007199254740991 + 1); // 9007199254740992
console.log(9007199254740991 + 2); // 9007199254740992
console.log(9007199254740991 + 100); // 9007199254740992
// Output are the same, bcoz these reach the limit of storage
// we need to use BigInt by adding "n" to the end of integer
let angkaBigInt = 90071992547410929999n; 
console.log(angkaBigInt);

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// c. String

let namaUser = "joekoe"; // double quotes
let namaOrang = 'koejoe'; // single quotes
console.log(namaUser, namaOrang); // double n single quotes have no difference in output console
console.log(`mereka adalah ${namaUser} dan ${namaOrang}`); // backtick for template literal

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// d. Boolean