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15 of 40🧠 JavaScript Conditional Statements
📌 What are JavaScript Conditional Statements?
Conditional statements allow control over the program's execution based on different conditions.
JavaScript provides multiple ways to implement conditional logic.
📋 If Statement
The if statement executes code when a condition is true.
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🔄 If-Else Statement
Execute different code blocks based on a condition.
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🎚️ Else-If Statement
Test multiple conditions in sequence.
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📊 Switch Statement
Clean alternative to long else-if chains for fixed values.
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✂️ Ternary Operator
Shorthand for simple if-else statements that return values.
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✅ Conditional Best Practices
- 🧠 Use descriptive condition names for readability
- ⚡ Put most likely conditions first in if-else chains
- 🧹 Avoid deep nesting with early returns
- 🔍 Use === instead of == to avoid type coercion
- 🎯 Prefer switch for multiple discrete values
- ✂️ Use ternary only for simple value assignments
📚 Conditional Reference Table
| Attribute | Description |
|---|---|
if | Basic conditional execution |
if...else | Choose between two paths |
else if | Test multiple conditions |
switch | Clean alternative for many values |
ternary | Compact if/else replacement |
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