How javascript reactivity works! - Angular Meetup Dhaka 2019

1. JavaScript Reactivity
Sajib Khan
Senior Software Engineer @ Goava (Frontend Lead)
Email: sajibcse68@gmail.com
GitHub: /sajibcse68
LinkedIn: /sajibkhan
Facebook: /sajibcse68

2. Why Reactivity?
- If we change the state we need to reflect the updated data with entire system. E.g.

3. Reactivity in Spreadsheet / Excel
t
aaaaaaa
In programic terms - what if we have a magic function!
onAChange(() => {
b = a * 10;
})
Real DOM Programming

4. Object.defineProperty()
- The static method Object.defineProperty() defines a new property directly on an object, or
modifies an existing property on an object, and returns the object.
Object.defineProperty(obj, prop, descriptor)

5. Source: http://bit.ly/js-reactivity
N.B. This is the basic form of the tracking systems as seen in Vue.js, Knockout.js, Meteor Tacker and MobX

6. Goava is Hiring!
Requirement: JavaScript, Angular / React / Vue
Please Send Resume to sajib.khan@goava.com

7. Thank You!