JavaScript Tutorial

The language for programming web pages.

Chapter Quiz Exercises
Course Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp

JS If Conditions

JavaScript Conditions

Conditional statements are used to perform different actions based on different conditions.

Types of Conditionals:

  • if — Execute if condition is true
  • if...else — Execute if/else
  • else if — Multiple conditions
  • switch — Match value against cases
  • Ternary: condition ? true : false
  • Nullish: value ?? defaultValue
  • Optional chaining: obj?.prop

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Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp