Here are five examples of `if-else` statements in JavaScript, ranging from easy to hard, with output displayed directly in the browser using `document.write`.
### 1. **Simple If-Else** - Easy
```javascript
document.write("<h3>Simple If-Else</h3>");
let age = 20;
if (age >= 18) {
document.write("You are an adult.");
} else {
document.write("You are a minor.");
}
```
### 2. **If-Else with Multiple Conditions** - Easy
```javascript
document.write("<h3>If-Else with Multiple Conditions</h3>");
let temperature = 25;
if (temperature > 30) {
document.write("It's hot outside.");
} else if (temperature < 15) {
document.write("It's cold outside.");
} else {
document.write("The weather is moderate.");
}
```
### 3. **Nested If-Else** - Medium
```javascript
document.write("<h3>Nested If-Else</h3>");
let marks = 85;
if (marks >= 50) {
if (marks >= 80) {
document.write("You passed with distinction!");
} else {
document.write("You passed.");
}
} else {
document.write("You failed.");
}
```
### 4. **If-Else with Logical Operators** - Medium
```javascript
document.write("<h3>If-Else with Logical Operators</h3>");
let hasID = true;
let isVIP = false;
if (hasID && isVIP) {
document.write("Welcome to the VIP section.");
} else if (hasID) {
document.write("You can enter the general area.");
} else {
document.write("Access denied.");
}
```
### 5. **Complex If-Else with Multiple Scenarios** - Hard
```javascript
document.write("<h3>Complex If-Else with Multiple Scenarios</h3>");
let score = 78;
if (score >= 90) {
document.write("Grade: A");
} else if (score >= 80) {
document.write("Grade: B");
} else if (score >= 70) {
document.write("Grade: C");
} else if (score >= 60) {
document.write("Grade: D");
} else {
document.write("Grade: F");
}
```
Copy and paste these examples into an HTML file to see them displayed in your browser.
