GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — JavaScript-Fundamentals/014-logic.js at main · sssreddys/JavaScript-Fundamentals

Expand file tree

/

014-logic.js

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
125 lines (99 loc) · 2.8 KB
/

014-logic.js

Copy path

File metadata and controls

125 lines (99 loc) · 2.8 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
// WHAT ARE CONDITIONAL STATEMENTS?
// THE IF STATEMENT
// if (condition) {
// // code to execute if condition is true
// }
// let age = 20;
// if (age >= 18) {
// console.log("You are an adult.");
// }
// let temperature = 35;
// if (temperature > 30) {
// console.log("It's hot outside!");
// }
// THE ELSE STATEMENT
// let age = 16;
// if (age >= 18) {
// console.log("You are an adult.");
// } else {
// console.log("You are a minor.");
// }
// let isRaining = true;
// if (isRaining) {
// console.log("Take an umbrella.");
// } else {
// console.log("Enjoy the sunshine!");
// }
// THE ELSE IF STATEMENT
// let score = 75;
// if (score >= 90) {
// console.log("Grade: A");
// } else if (score >= 80) {
// console.log("Grade: B");
// } else if (score >= 70) {
// console.log("Grade: C");
// } else {
// console.log("Grade: F");
// }
// PRACTICAL EXAMPLES
// Example 1: Login System
// let username = "john";
// let password = "1234";
// if (username === "john" && password === "1234") {
// console.log("Login successful!");
// } else {
// console.log("Invalid credentials.");
// }
// Example 2: Discount System
// let purchaseAmount = 150;
// if (purchaseAmount >= 200) {
// console.log("You get 20% discount!");
// } else if (purchaseAmount >= 100) {
// console.log("You get 10% discount!");
// } else {
// console.log("No discount.");
// }
// Example 3: Time-based Greeting
// let hour = 14;
// if (hour < 12) {
// console.log("Good morning!");
// } else if (hour < 18) {
// console.log("Good afternoon!");
// } else {
// console.log("Good evening!");
// }
// COMMON MISTAKES TO AVOID
// 1. Using assignment instead of comparison
// let age = 18;
// if (age = 20) { // Wrong! This assigns 20 to age
// console.log("Adult");
// }
// 2. Forgetting curly braces
// if (age >= 18)
// console.log("Adult"); // Works, but not recommended
// if (age >= 18) {
// console.log("Adult"); // Better!
// }
// 3. Order matters in else if chains
// let score = 95;
// if (score >= 70) {
// console.log("Pass"); // This will execute
// } else if (score >= 90) {
// console.log("Excellent"); // This never runs!
// }
// NESTED CONDITIONS
// let age = 25;
// let hasLicense = true;
// if (age >= 18) {
// if (hasLicense) {
// console.log("You can drive!");
// } else {
// console.log("You need a license.");
// }
// } else {
// console.log("You're too young to drive.");
// }
// PRACTICE CHALLENGE
// Write a program that takes a number and determines:
// - If it's positive, negative, or zero
// - If it's even or odd
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.