pure react classic react with class components

00:00:00 01 Use React State to Make Components Interactive 00:03:57 02 Run Code After Setstate With a Callback 00:06:47 03 Write a React Component Without the Constructor 00:07:49 04 Setstate Uses Shallow Merge to Update State 00:12:02 05 the Consequences of Mutating State 00:15:56 06 Store the Value of Form Input in State 00:17:45 07 Use a Ref to Refer to an Uncontrolled Input 00:19:23 08 Sketch Before Building Shopper App 00:20:23 09 Build the Shopper S Item Page 00:23:31 10 Add Items to the Cart 00:27:17 11 Build the Shopper S Cart Page 00:30:12 12 Display Cart Items and a Total 00:38:30 13 Build a Checkout Form 00:48:19 14 Phases of the Component Lifecycle 00:49:34 15 Mounting Updating and Unmounting 00:51:38 16 Optimize a React Component With Shouldcomponentupdate 00:56:13 17 Automatically Scroll a Chat Box With Getsnapshotbeforeupdate 00:59:14 18 Update State Based on Props With Getderivedstatefromprops 01:01:48 19 Use Error Boundaries to Catch and Recover From Errors