|
| 1 | +const oldString = "string"; |
| 2 | +const commonString = 'string'; |
| 3 | +const es6String = `string`; |
| 4 | + |
| 5 | +const yearsOld = 1998; |
| 6 | +const name = "Nikita"; |
| 7 | + |
| 8 | +console.log(name, 'born in', yearsOld); |
| 9 | +console.log(`${name} born in ${yearsOld}`); |
| 10 | + |
| 11 | +console.log(`Class |
| 12 | +Work`); |
| 13 | + |
| 14 | +const myNameUpperCase = name.toUpperCase(); |
| 15 | + |
| 16 | +console.log(myNameUpperCase); |
| 17 | +console.log('string'.toUpperCase()); |
| 18 | +console.log('STRING'.toLowerCase()); |
| 19 | + |
| 20 | +console.log(name[0].toUpperCase()); |
| 21 | + |
| 22 | +//Name example |
| 23 | + |
| 24 | +const nameExample = 'nikita'; |
| 25 | +console.log(nameExample[0].toUpperCase() + nameExample[1] + nameExample[2] + nameExample[3] + nameExample[4] + nameExample[5]); |
| 26 | + |
| 27 | +console.log(nameExample[0].toUpperCase() + nameExample.slice(1)); |
| 28 | + |
| 29 | +//Slice example |
| 30 | + |
| 31 | +const youtube = 'Yoube'; |
| 32 | + |
| 33 | +console.log(youtube.slice(0, 3) + 'tu' + youtube.slice(3, 5)); |
| 34 | +console.log(`${youtube.slice(0, 3)}tu${youtube.slice(3, 5)}`); |
| 35 | + |
| 36 | +//split example |
| 37 | + |
| 38 | +const myNameArray = 'Nikita Balashov'.split(' '); |
| 39 | + |
| 40 | +console.log(myNameArray); |
| 41 | + |
| 42 | +const date = `01-12-1995`.split('-'); |
| 43 | +console.log(date); |
| 44 | + |
| 45 | +const somePractical = `array redict reverse`.split('r'); |
| 46 | +console.log(somePractical); |
| 47 | + |
| 48 | + |
| 49 | +//replace example |
| 50 | + |
| 51 | +console.log('Yahoo'.replace('a', '@')); |
| 52 | +console.log(`Yahoo`.replace(`o`, `@`).replace(`o`, `@`)); |
| 53 | + |
| 54 | +//indexOf |
| 55 | + |
| 56 | +console.log(`The Avengers`.indexOf(`e`, 4)); |
| 57 | + |
| 58 | +//length |
| 59 | + |
| 60 | +console.log('easy'.length); |
| 61 | + |
| 62 | +//includes |
| 63 | + |
| 64 | +console.log('Boolean'.includes('Boo')); |
| 65 | +console.log('Boolean'.includes('t')); |
| 66 | + |
| 67 | +//trim |
| 68 | + |
| 69 | +console.log(`The End`.trim()); |
| 70 | + |
| 71 | +//repeat |
| 72 | + |
| 73 | +console.log(`0_0 `.repeat(7)); |
| 74 | + |
| 75 | +//math |
| 76 | + |
| 77 | +console.log('' + 10); |
| 78 | +console.log(' ' + 10); |
| 79 | + |
| 80 | +console.log([] + []); |
| 81 | +console.log([] + {}); |
| 82 | + |
| 83 | +console.log(10 == 10); |
| 84 | +console.log(`10` == 10); |
| 85 | +console.log(`10` === 10); |
| 86 | + |
| 87 | +console.log(`Empty String`, `` == true); |
| 88 | +console.log(`One space`, ` ` == true); |
| 89 | + |
| 90 | +console.log(10 % 2); |
| 91 | +console.log(15 % 10); |
| 92 | + |
| 93 | + |
| 94 | +const year2018 = 2018; |
| 95 | +console.log(year2018 % 2000); |
| 96 | + |
| 97 | +console.log(!!false == false); |
| 98 | +console.log(!false == true); |
| 99 | + |
| 100 | +//Math |
| 101 | + |
| 102 | +console.log(Math.pow(2, 5)); |
| 103 | +console.log(2 ** 5); |
| 104 | + |
| 105 | +//typeof |
| 106 | + |
| 107 | +console.log(typeof 'typeof'); |
| 108 | +console.log(typeof 120); |
| 109 | + |
| 110 | +const typeofArray = [1, `2`, 3]; |
| 111 | +console.log(typeof typeofArray); |
| 112 | +console.log(Array.isArray(typeofArray)); |
| 113 | + |
| 114 | +console.log(typeof {}); |
| 115 | + |
| 116 | +function typeofFunction () {}; |
| 117 | +console.log(typeof typeofFunction); |
| 118 | + |
| 119 | +console.log(typeof NaN); |
| 120 | + |
| 121 | +//task-1 |
| 122 | + |
| 123 | +const student = { |
| 124 | + skills: [`JS`, `React`], |
| 125 | + salary: `2000$`, |
| 126 | +}; |
| 127 | + |
| 128 | +student.salary = `3000$`; |
| 129 | +student.age =`20`; |
| 130 | + |
| 131 | +student[`offers`] = 5; |
| 132 | + |
| 133 | +console.log(student); |
| 134 | + |
| 135 | + |
| 136 | + |
| 137 | + |
| 138 | + |
| 139 | + |
| 140 | + |
| 141 | + |
| 142 | + |
| 143 | + |
| 144 | + |
| 145 | + |
| 146 | + |
0 commit comments