The else if ladder is used when a program needs to check more than two conditions. Instead of choosing between only true and false, JavaScript can evaluate multiple conditions one by one and execute the block that matches.
This structure is useful when different actions are required for different ranges of values, such as grading systems, performance levels, or user categories.
When to Use else if Ladder
- When you have more than two conditions
- When checking ranges of values
- When handling multiple outcomes
- When building grading systems
- When deciding user roles or permissions
The else if ladder makes decision-making flexible and organized.
In this example, JavaScript checks conditions from top to bottom. As soon as one condition becomes true, its block runs and the rest are skipped.
This shows how else if ladders control multiple outcomes in a clean way.
Here, the program checks different age ranges and displays the correct category.
This logic is often used in registration forms, surveys, and user profiling systems.
These examples show how the else if ladder handles multiple conditions in real-life scenarios.
By mastering this structure, students can write programs that handle complex decision-making clearly and efficiently.