Javascript Basics
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This document introduces JavaScript basics including comments, variables, variable types, and operators. It explains single-line and multiline comments, how to declare variables using var and assign values, different variable types like string, number, boolean, and object. It also demonstrates operators for addition, comparison, and typeof to check variable types.
Javascript Basics
- 1. JavaScript Basics By :: Ahmed Murtaza
- 2. //Comments
- 3. Use it, it will not make you freeze!!
- 4. // Single Line comment /* Multiline Comments Multiline Comments Multiline Comments */
- 5. Variables
- 7. var name = “Ahmed Murtaza”;
- 8. Declaration keyword var name = “Ahmed Murtaza”; Variable name Variable value terminator
- 9. Adding Types
- 10. var name = “Ahmed Murtaza”; var num = 27; var _bool = false; var obj = {};
- 11. var name = “Ahmed Murtaza”; var num = 27; var _bool = false; var obj = {}; String Number Boolean Object
- 12. 5 + “4” 5 + null 4 == “4.00” null == undefined 0 == false 0 == null null == false
- 13. typeof null == “object” typeof function (){} == “function”