//strings

let myString = "hello,this,is,a,difficult,to,read,sentence";

console.log(myString);

console.log(myString.length);

myString = myString.replace(/,/g, " ");

console.log(myString);

// or :

console.log(myString.replace(/,/g, " "));

//Arrays

let favoriteAnimals = ["blowfish", "capricorn", "giraffe"];

favoriteAnimals.push('turtle');

console.log(favoriteAnimals); // returns ["blowfish", "capricorn", "giraffe", "turtle"]

favoriteAnimals.splice(1, 0, "meerkat");

console.log(favoriteAnimals); // returns ["blowfish", "meerkat", "capricorn", "giraffe", "turtle"]

console.log(favoriteAnimals.length); //returns 5

alert('The array has a length of: 5');

let remove = favoriteAnimals.splice(3, 1);

console.log(remove); // returns ["giraffe"]

console.log(favoriteAnimals); // returns ["blowfish", "meerkat", "capricorn", "turtle"]

console.log(favoriteAnimals.indexOf("meerkat"));// returns 1

let remove2 = favoriteAnimals.splice(1, 1);

console.log(remove2); //returns ["meerkat"]

alert('The item you are looking for is at index: 1 ');

//more javascript

let param1 = 1;

let param2 = 2;

let param3 = 3;

function myFunc(param1, param2, param3) {

return (param1 + param2 + param3);

}

console.log(myFunc(1, 2, 3)); // returns 6

console.log(myFunc(5, 6, 7));

//

function colorCar(color) {

return "a " + color + "car";

}

console.log(colorCar("red")); //returns a red car

console.log(colorCar("orange"));

//

myFunc(1, 2, 3); // returns 6

function vehicleType(color, x) {

if (x === 1) {

return `a ${color} car`;

}

else if (x === 2) {

return `a ${color} motorbike`;

}

else {

return "input error!!! try vehicleType('color',1 or 2)";

}

}

console.log(vehicleType("red", 1));

console.log(vehicleType("blue", 2));

console.log(vehicleType("blue", 3));

let someObject = {

foo: "This",

bar: "works!"

};

someFunc(someObject);

function someFunc(arg) {

(arg.foo);

(arg.bar);

}

function someFunc(someObject) {

return someObject;

}

someFunc({ foo: "This", bar: "works!" });

console.log(({ foo: "This", bar: "works!" })); //returns {foo: "This", bar: "works!"}

//

function vehicleType(color, x) {

if (x === 1) {

return `a ${color} car`;

} else if (x === 2) {

return `a ${color} motorbike`;

} else {

return `a ${color} airplane`;

};

};

vehicleType("blue", 2) //returns 'a blue motorbike'

//

let reWrite = 3 === 3 ? "yes" : "no";

console.log(reWrite);

//

function vehicle(color, x, age) {

if (x === 1 && age > 0) {

return `a ${color} used car`;

} else if (x === 2 && age > 0) {

return `a ${color} used motorbike`;

} else if (x === 2 && age === 0) {

return `a ${color} airplane`;

} else {

return 'invalid input';

}

}

console.log(vehicle("blue", 1, 8));

console.log(vehicle("red", 1, 2))

//

let vehicles = ["motorbike", "caravan", "bike", "car"];

console.log(vehicles); //returns (4) ["motorbike", "caravan", "bike", "car"]

console.log(vehicles[2]); //returns bike

//

function vehicleX(color, y, age) {

if (x === 1 && age > 0) {

return `a ${color} used car`;

} else if (x === 2 && age > 0) {

return `a ${color} used motorbike`;

} else if (x === 2 && age === 0) {

return `a ${color} airplane`;

} else if (x === 3 && age === 0) {

return `a ${color} new ${vehicles[2]}`;

} else {

return No;

}

}

console.log(vehicleX("green", 3, 1));

//

//

let object = [];

console.log(object);//returns []

//

let objectTeachers = ["Philipe", "Unmush", "Yash"];

console.log(objectTeachers); //returns  ["Philipe", "Unmush", "Yash"]

objectTeachers.Philipe = "HTML",

objectTeachers.Unmush = "CommandLine",

objectTeachers.Yash = "javaScript",

console.log(objectTeachers);// returns (3) ["Philipe", "Unmush", "Yash", Philipe: "HTML", Unmush: "CommandLine", Yash: "javaScript"]

//

let x = [1, 2, 3];

let y = [1, 2, 3];

let z = y;

console.log(x == y); //returns false

console.log(x === y); //returns false

console.log(x == y);//returns false

console.log(x === y || z == y || z == x); //this is true .

//

let o1 = { foo: "bar" };

let o2 = { foo: "bar" };

let o3 = o2;

o2 = { foo: "bar2" };

console.log(o2);//returns {foo: "bar2"}

console.log(o3);//returns {foo: "bar"}

// it did not change

// Does the order that you assign (o3 = o2 or o2 = o3) matter? yes.

//

o2.foo = "bar2";

console.log(o3); // returns {foo: "bar2"}

// yes it changes

// Does the order that you assign (o3 = o2 or o2 = o3) matter? yes

let bar = 42;

console.log(typeof typeof bar); // returns a string

// because it doing a type of for the word number