Day 5 of 14 30 minif / elseswitchTernary
Make your code choose between paths with if, else if and else, switch on a value, pick a value with the ternary operator, and keep decision logic readable with early returns and lookup objects.
By the end of today you can
- Write if, else if and else chains in the right order
- Use switch to branch on one value, and avoid fall-through bugs
- Choose between two values with the ternary operator
- Simplify nested conditions with guard clauses
- Replace long if chains with a lookup object
What's inside
- 5 sections
- 3 diagrams and mind maps
- 8 code examples you can run
- 5-question quiz
- 1if, else if, else
- 2Combining conditions
- 3switch: one value, many cases
- 4The ternary operator: choose a value
- 5Keeping decisions readable
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