|
| 1 | +//string data type |
| 2 | +let firstName = "Sahin"; |
| 3 | +let fullName = "I'm Sahin 'Enam'" |
| 4 | +let lastName = "I'm Sahin \"Enam\"" |
| 5 | +//print |
| 6 | +console.log(lastName); |
| 7 | +console.log(typeof firstName); |
| 8 | +console.log(fullName); |
| 9 | + |
| 10 | +//Variable use in variable |
| 11 | +let name = `Hi there, I'm ${firstName} Enam.`; |
| 12 | +console.log(name); |
| 13 | + |
| 14 | + |
| 15 | +//number type data |
| 16 | +let age = 39; |
| 17 | +let age1 = '39'; //this is not number type data |
| 18 | +let age2 = 33; |
| 19 | +let age3 = 100; |
| 20 | + |
| 21 | +console.log(age + age2 + age3); |
| 22 | +console.log(age + age2 + age3 + firstName); |
| 23 | +console.log(age + age2); |
| 24 | +console.log(age + age1); |
| 25 | + |
| 26 | +//so funny 🤣 |
| 27 | +let numberBig = 1293802837187378862867387380108289738761763398638866276n; |
| 28 | +let numberBig1 = 1837393791738817629272829227272982288282888228282n; |
| 29 | +console.log(numberBig * numberBig1) |
| 30 | +//the answer is: 2377225300782158171114417537104552447620556546398146200733782845421022575211978322075543259162759217832 |
| 31 | + |
| 32 | +let number = 10n; |
| 33 | +let number2 = 20; |
| 34 | +let age4 = 'Sahin'; |
| 35 | + |
| 36 | +console.log(number + age4); |
| 37 | + |
| 38 | + |
| 39 | +//Boolean data type |
| 40 | +let ifAdult = true; |
| 41 | +console.log(ifAdult); |
| 42 | + |
| 43 | +//undefane |
| 44 | +let someInfo; |
| 45 | +console.log(someInfo); |
| 46 | + |
| 47 | +//null |
| 48 | +let some = null; |
| 49 | +console.log(some); |
| 50 | + |
| 51 | +//arry |
| 52 | +let fruits = ['Apple', 'Oranges', 'Cat']; |
| 53 | +fruits[1] = 'Mango'; // change the veule |
| 54 | +fruits[3] = 'Mango'; //Add new item |
| 55 | +console.log(fruits); |
| 56 | +console.log(fruits[0]); //print only apple |
| 57 | +console.log(typeof fruits); |
| 58 | + |
| 59 | +//or use object (same as arry) |
| 60 | +let student ={ |
| 61 | + fullName: 'Sahin', |
| 62 | + age: 32, |
| 63 | + dateOfBirth: 1999, |
| 64 | +} |
| 65 | +console.log(student); |
| 66 | + |
| 67 | + |
| 68 | +//now you see all code output and result |
| 69 | +/* I'm Sahin "Enam" |
| 70 | +string |
| 71 | +I'm Sahin 'Enam' |
| 72 | +Hi there, I'm Sahin Enam. |
| 73 | +172 |
| 74 | +172Sahin |
| 75 | +72 |
| 76 | +3939 |
| 77 | +2377225300782158171114417537104552447620556546398146200733782845421022575211978322075543259162759217832 |
| 78 | +10Sahin |
| 79 | +true |
| 80 | +undefined |
| 81 | +null |
| 82 | +[ |
| 83 | + "Apple", |
| 84 | + "Mango", |
| 85 | + "Cat", |
| 86 | + "Mango" |
| 87 | +] |
| 88 | +Apple |
| 89 | +object |
| 90 | +{ |
| 91 | + "fullName": "Sahin", |
| 92 | + "age": 32, |
| 93 | + "dateOfBirth": 1999 |
| 94 | +}*/ |
| 95 | + |
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