|
| 1 | +const student = { |
| 2 | + FullName: "Nilaj Chakraborty", |
| 3 | + Marks: 94.3, |
| 4 | + printMarks: function(){ |
| 5 | + console.log("Marks =",this.Marks) |
| 6 | + } |
| 7 | + |
| 8 | +}; |
| 9 | + |
| 10 | + |
| 11 | +const employee = { |
| 12 | + calculateTax(){ |
| 13 | + console.log("Tax rate is 10%"); |
| 14 | + } |
| 15 | + |
| 16 | +}; |
| 17 | + |
| 18 | +const KaranArjun ={ |
| 19 | + salary: 50000 |
| 20 | +}; |
| 21 | + |
| 22 | +const RahulRaj ={ |
| 23 | + salary: 60000, |
| 24 | + calculateTax(){ |
| 25 | + console.log("Tax rate is 20%"); |
| 26 | + } |
| 27 | +} |
| 28 | + |
| 29 | +KaranArjun.__proto__=employee; |
| 30 | +RahulRaj.__proto__=employee; |
| 31 | + |
| 32 | + |
| 33 | + |
| 34 | +class ToyotaCar{ |
| 35 | + constructor(brand,milege){ |
| 36 | + console.log("New object created"); |
| 37 | + this.brand=brand; |
| 38 | + this.milege=milege; |
| 39 | + } |
| 40 | + |
| 41 | + start(){ |
| 42 | + console.log("Start"); |
| 43 | + |
| 44 | + } |
| 45 | + |
| 46 | + stop(){ |
| 47 | + console.log("Stop"); |
| 48 | + } |
| 49 | + |
| 50 | +} |
| 51 | +let fortuner=new ToyotaCar("fortuner",10); |
| 52 | +console.log(fortuner) |
| 53 | +let lexus=new ToyotaCar("Lexus",20); |
| 54 | +console.log(lexus); |
| 55 | + |
| 56 | + |
| 57 | + |
| 58 | +class Parent{ |
| 59 | + hello(){ |
| 60 | + console.log("Hello") |
| 61 | + } |
| 62 | +} |
| 63 | + |
| 64 | +class Child extends Parent{ |
| 65 | + |
| 66 | +} |
| 67 | + |
| 68 | +let obj=new Child(); |
| 69 | + |
| 70 | + |
| 71 | + |
| 72 | + |
| 73 | +class Person{ |
| 74 | + constructor(name){ |
| 75 | + |
| 76 | + this.species="Homo sapiens"; |
| 77 | + this.name=name; |
| 78 | + } |
| 79 | + eat(){ |
| 80 | + console.log("Eat"); |
| 81 | + } |
| 82 | +} |
| 83 | + |
| 84 | + class Engineer extends Person{ |
| 85 | + constructor(name){ |
| 86 | + |
| 87 | + super(name);//to invoke parent class constrctor() |
| 88 | + |
| 89 | + } |
| 90 | + work(){ |
| 91 | + console.log("Solving Problem"); |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | + let engobj=new Engineer("Nilaj Chakraborty"); |
| 96 | + |
| 97 | + //PQ 2 |
| 98 | + let DATA = "Secret Information"; |
| 99 | + |
| 100 | + class User { |
| 101 | + constructor(name, email) { |
| 102 | + this.name = name; |
| 103 | + this.email = email; |
| 104 | + } |
| 105 | + |
| 106 | + viewData() { |
| 107 | + console.log("Data =", DATA); |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + class Admin extends User { |
| 112 | + constructor(name, email) { |
| 113 | + super(name, email); |
| 114 | + } |
| 115 | + |
| 116 | + edit() { |
| 117 | + DATA = "new data"; |
| 118 | + } |
| 119 | + } |
| 120 | + |
| 121 | + let student1 = new User("Nilaj", "nilaj@email.com"); |
| 122 | + console.log(student1.viewData()); |
| 123 | + |
| 124 | + let student2 = new User("Samadrita", "sam@email.com"); |
| 125 | + console.log(student2.viewData()); |
| 126 | + |
| 127 | + let admin1 = new Admin("admin1", "admin1@admin.com"); // Creating an instance of Admin |
| 128 | + admin1.edit(); // Now you can call the edit method on admin1 |
| 129 | + console.log(admin1.viewData()); // This will show the updated data |
| 130 | + |
| 131 | + |
| 132 | + |
| 133 | + |
| 134 | + |
| 135 | +//try catch |
| 136 | +let a=5; |
| 137 | +let b=10; |
| 138 | +console.log("a =",a); |
| 139 | +console.log("b =",b); |
| 140 | +console.log("a+b =",a+b); |
| 141 | +console.log("a+b =",a+b); |
| 142 | +console.log("a+b =",a+b); |
| 143 | +try{ |
| 144 | + console.log("a+b =",a+c);//error |
| 145 | +} catch(err){ |
| 146 | + console.log(err); |
| 147 | +} |
| 148 | + |
| 149 | +console.log("a+b =",a+b); |
| 150 | +console.log("a+b =",a+b); |
| 151 | +console.log("a+b =",a+b); |
| 152 | + |
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