2. Control Structures and Arrays# 2.1. Conditionals 2.1.1. Boolean Expressions 2.1.2. Logical Operators 2.1.3. Equal vs. Strictly Equal 2.1.4. if 2.1.5. else 2.1.6. else if 2.1.7. Multiple Conditions 2.1.8. Nesting Conditions 2.1.9. Glossary 2.2. Arrays 2.2.1. Defining an Array 2.2.2. Indexing 2.2.3. Adding Elements 2.2.4. Removing Elements 2.2.5. Useful Methods 2.3. Loops 2.3.1. for Loop 2.3.2. while Loop 2.3.3. Looping Over Objects