Javascript

let z=100;
console.log(typeof(z))

const y="boy";
console.log(typeof(y))

/* number */
let b=1;
let a=2;
console.log(a+b)

/* increment dan decrement */
let c=25;
console.log(++c)
let domi=12;
console.log(domi++)

/* strings */
let kata="boy";
let kata1= kata + kata;
console.log

/* boolean */
const poi=12;
const tai=6;
let moba= poi > tai;
let legen= poi < tai;
console.log(moba)
console.log(legen)

let myArray = ["mobil", 27, "boy", 2007]
console.log(myArray[1])
console.log("panjang nilai array adalah " + myArray.length + ".")

let objects= {
    firtsname: "harry",
    lastname: "septa",
    umur: 37,
    pekerjaan: "programmer"
}
console.log("nama saya " + objects.firtsname + " " + "pekerjaan saya " + objects.pekerjaan)

let uy=12;
let bu=14;
uy +=bu /* uy= uy +bu*/
console.log(uy)

let out=12;
let inn="12";
console.log(out === inn)
/* kenapa false karena out number type nya dan inn string. identik
itu dilihat dari typenya*/

let pol=6;
let pot=19;
console.log(pol>5 && pot > 10)
console.log(pol>8 && pot > 9) /* false karena logic pertama bernilai false
dan itu harus keduanya bernilai true*/
console.log(!(pol>5 && pot > 10)) /*berlawanan hasil di line 56 karena 
menggunakan operator ! (not) (berlawanan)*/

let po=50;
if (po > 70) {
    console.log(po)
} else {
    console.log("nilai kurang")
}

let mor= "english";
let greet= "Selamat pagi";
if (mor === "english"){
    greet= "siang aja"
}
console.log(greet)

let lapt="Pekanbaru";
let tops="selamat malam";
if(lapt==="bali"){
    tops="siang"
} else if (lapt === "Pekanbaru") {
    tops="Selamat Datang"
} else if (lapt === "Bandung") {
    tops="Selamat Jalan"
}
console.log(tops)

/* loop */
let Arrays = ["herman", "King", "moi", "le"];
for (let i=0; i < Arrays.length; i++){
    console.log(Arrays[i]);
}

/* menggunakan for loop tanpa harus mendeklarasikan dan lebih simple*/
const pogba=["mcu", "juventus", "realmadrid"];
for (const mou of pogba){
    console.log(mou)
}

const sayHello = language => {
    if(language.toUpperCase() === "INDONESIA") {
        return "Selamat Pagi!";
    } else {
        return "Good Morning!";
    }
}
 
console.log(sayHello("jepang"));