# Knowledge check - Conditionals and loops in Javascript

1. **Based on the following code, what will print out when the variable i has the value 3 ?**
    
    ```javascript
    if(i < 5) {
      console.log("Hello");
    } else {
      console.log("Goodbye");
    }
    ```
    
    * <mark>Hello</mark>
        
    * Goodbye
        
2. **Based on the following code, what will print out when the variable i has the value 1 ?**
    
    ```javascript
    if(i == 0 && i == 1) {
      console.log("Hello");
    } else {
      console.log("Goodbye");
    }
    ```
    
    * Hello
        
    * <mark>Goodbye</mark>
        
3. **How many times will the following code print the word 'Hello'?**
    
    ```javascript
    for (i = 0; i < 2; i++) {
        console.log("Hello");
    }
    ```
    
    * 1
        
    * <mark>2</mark>
        
    * 3
        
    * 4
        
4. **How many times will the following code print the word 'Hello'?**
    
    ```javascript
    var i = 0;
    while(i < 3) {
      console.log("Hello");
      i++;
    }
    ```
    
    * 1
        
    * 2
        
    * <mark>3</mark>
        
    * 4
        
5. **How many times will the following code print the word 'Hello'?**
    
    ```javascript
    for (i = 0; i < 2; i++) {
        for (var j = 0; j < 3; j++) {
            console.log("Hello");
        }
    }
    ```
    
    * 2
        
    * 3
        
    * 4
        
    * <mark>6</mark>
        
6. **Based on the following code, what will print out when the variable i has the value 7 ?**
    
    ```javascript
    if(i <= 5) {
        console.log("Hello");
      } else if(i <= 10) {
        console.log("Goodnight");
      } else {
        console.log("Goodbye");
    }
    ```
    
    * Hello
        
    * <mark>Goodnight</mark>
        
    * Goodbye
        
7. **Based on the following code, what will print out when the variable i has the value 3 ?**
    
    ```javascript
    switch(i) {
        case 1:
          console.log("Hello");
          break;
        case 2:
          console.log("Goodnight");
          break;
        case 3:
          console.log("Goodbye");
          break;
    }
    ```
    
    * Hello
        
    * Goodnight
        
    * <mark>Goodbye</mark>
        
8. **Based on the following code, what will print out when the variable i has the value 3 ?**
    
    ```javascript
    if(i == 2 || i == 3) {
      console.log("Hello");
    } else {
      console.log("Goodbye");
    }
    ```
    
    * <mark>Hello</mark>
        
    * Goodbye