JavaScript Numbers, Number Methods, isNaN | JavaScript Tutorial for Beginners
Web Dev Roadmap for Beginners (Free!): https://bit.ly/DaveGrayWebDevRoadmap
In this video we'll discuss JavaScript numbers and several useful JavaScript number methods. All in less than 8 minutes!
▶ This video is part of the JavaScript Tutorials for Beginners Playlist found here: • Javascript Tutorials for Beginners
✅ Quick Concepts outline:
(00:00) Intro
(0:08) Dev Environment
(0:30) Integers
(0:42) Floats
(0:50) When JavaScript shows decimals
(1:10) Number data vs String data in the console window
(1:20) Comparing Integers and Floats
(1:47) Equations with Strings vs Numbers
(2:05) The Number() function
(2:33) "Not a Number" aka NaN
(2:50) Boolean data represented as Numbers
(2:58) 0 === false
(3:06) isInteger() method
(3:21) parseFloat() method
(3:47) toFixed() method
(4:04) parseInt() method
(4:17) toString() method
(4:35) Chaining methods using dot notation
(5:00) Number.isNaN() method vs global isNaN() function
📚 Further Reading:
MDN Web Docs - Number Reference: https://developer.mozilla.org/en-US/d...
MDN Web Docs - Basic Math in JavaScript: https://developer.mozilla.org/en-US/d...
📺 More Beginner JS Videos:
freeCodeCamp: • Learn JavaScript - Full Course for Beginners
Traversy Media: • JavaScript Crash Course For Beginners
The Net Ninja: • Modern JavaScript Tutorial #1 - Intro & Setup
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