Solution

(upbeat music) … - [Instructor] Here's my solution … to the color selector challenge. … The goal is to activate the color selector … so that it causes changes … in the available list of sizes and optionally, … to update the selected size piece of state … based on that availability check. … So if I change the color from red to green, … I can see that the shoe changes color. … And my list of sizes is shrinking. … Now if I start changing things over here, … I'm starting to paint myself into a corner a little bit … where some of the colors are disappearing, … and some of the sizes are disappearing as well. … We could add a react powered reset button to fix all this. … We don't have it right now, so I'll just reload. … I also said to watch out for weird behavior, … and of course, paint ourselves into a corner like that … was one piece of weird behavior, but here's another one. … If I keep the color red and go to size 12, say, … the picture shows a brown shoe … but the currently selected color is green. …