![Objects*
Free form – not bound to any class
Object literal to create object
Property of object can be accessed directly
New property can be added directly on objects
Objects can have methods
_______________________________________
Dot notation versus [ ] notation](https://image.slidesharecdn.com/js-slideshare-190305183952/85/Js-slideshare-13-320.jpg)
![Array
ARRAY IS SECRETLY AN OBJECT
Eg: var myArray=[“Hi”,”1”,”Hello”];
myArray[0] and myArray[“0”] results same
o/p
length property(checking the index not the
count)](https://image.slidesharecdn.com/js-slideshare-190305183952/85/Js-slideshare-14-320.jpg)
Js slideshare
- 1. JAVASCRIPT
- 2. Java vs JavaScript Java - Programming Language (PL) Interactive Web Graphics Creating web browser applications Writing stand-alone applications JavaScript - Scripting Language Runs within the context of the Web browser Customizing pages based on browser version Visual Feedback to user actions Validating data entered on HTML Forms In reality, Java and JavaScript are unrelated…
- 3. PL versus SL – By Definition 3
- 4. PL versus SL – By Type 4
- 5. PL versus SL – By Interpretation 5
- 6. PL versus SL – By Conversion 6
- 7. PL versus SL - Examples 7
- 8. Javascript(JS) Lightweight, interpreted, object oriented language with first class functions and its best knows as scripting language for web pages Light weight- Small memory footprint, easy to implement interpreted- Instruction executed directly object oriented – Model around objects first class function – functions can be used as value
- 9. History 9
- 10. Why JS Client side web development (Navigators Javascript) Native JS- not a framework JQuery – Library Angular JS, React JS, Ember JS – advance client side application framework Server side web development (Live wire Javascript) Node JS Express JS (works with node) Desktop , mobile and browser extensions(add-on and plug-in) RTE - browser
- 11. Data Types Number String Boolean Undefined Null Symbol
- 12. Type coersion Explicit coersion Implicit coersion Every value in javascript has boolean value
- 13. Objects* Free form – not bound to any class Object literal to create object Property of object can be accessed directly New property can be added directly on objects Objects can have methods _______________________________________ Dot notation versus [ ] notation
- 14. Array ARRAY IS SECRETLY AN OBJECT Eg: var myArray=[“Hi”,”1”,”Hello”]; myArray[0] and myArray[“0”] results same o/p length property(checking the index not the count)
- 15. Function Function Declaration Function with args Function with return Function expression Anonymous function expression Function as args Function as Objects
- 16. Scope and Closure Scope Scope is based on function Not all variables are accessible anywhere Global function vs IIFE Read vs Write Compilation vs Interpretation Closure Module pattern
- 17. Regular fn vs Constructor Functions are objects Dunder proto Inheritance