moving out outdated js docs

olddocs/js/lessons/clear-screen/challenges.md

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+# clear screen challenges
+
+My script. #docs
+
+### Challenge 0
+
+Welcome! This [guided tutorial](/hzckbb) will help you create the script to clear the screen!
+
+Your goal is to clear the screen after displaying an animation. Begin by showing and displaying an animation. Remember that the `show animation` is in the `basic` namespace. We then need to detect when the "A" button is pressed. Finally, clear the screen by typing in `basic->clear screen`.
+
+Your main function should look like this:
+
+```
+basic.showAnimation(`
+# # # # # # # # # # . . . . . . . . . .
+# # # # # # # # # # . . . . . . . . . .
+. . . . . # # # # # # # # # # . . . . .
+. . . . . # # # # # # # # # # # # # # #
+. . . . . . . . . . . . . . . # # # # #
+`, 400)
+input.onButtonPressed(Button.A, () => {
+    basic.clearScreen()
+})
+```
+
+* tap the `run` button to view the script on the monitor.
+
+### Challenge 1
+
+Create an event handler for Button "B".
+
+```
+basic.showAnimation(`
+# # # # # # # # # # . . . . . . . . . .
+# # # # # # # # # # . . . . . . . . . .
+. . . . . # # # # # # # # # # . . . . .
+. . . . . # # # # # # # # # # # # # # #
+. . . . . . . . . . . . . . . # # # # #
+`, 400)
+input.onButtonPressed(Button.A, () => {
+    basic.clearScreen()
+})
+input.onButtonPressed(Button.B, () => {
+})
+```
+
+### Challenge 2
+
+Replay the animation when the "B" button is pressed by typing in `basic->show animation(..., 400)`.
+
+```
+basic.showAnimation(`
+# # # # # # # # # # . . . . . . . . . .
+# # # # # # # # # # . . . . . . . . . .
+. . . . . # # # # # # # # # # . . . . .
+. . . . . # # # # # # # # # # # # # # #
+. . . . . . . . . . . . . . . # # # # #
+`, 400)
+input.onButtonPressed(Button.A, () => {
+    basic.clearScreen()
+})
+input.onButtonPressed(Button.B, () => {
+    basic.showAnimation(`
+# # # # # # # # # # . . . . . . . . . .
+# # # # # # # # # # . . . . . . . . . .
+. . . . . # # # # # # # # # # . . . . .
+. . . . . # # # # # # # # # # # # # # #
+. . . . . . . . . . . . . . . # # # # #
+`, 400) // ***
+})
+```
+
+### Challenge 3
+
+Show an animation that scrolls back up when you press button "B".
+
+* tap the `run` button to view your final product!