Update BoardSwitcher.jsx

src/components/BoardSwitcher.jsx

@@ -1,4 +1,4 @@
-import React from "react";
+import React, { useState } from "react";
 
 function Board(props) {
   let className = "board";
@@ -10,16 +10,28 @@ function Board(props) {
 }
 
 function BoardSwitcher(props) {
+  // State to track the currently selected board
+  const [selectedBoard, setSelectedBoard] = useState(0);
+
+  // Event handler for the toggle button
+  const handleToggle = () => {
+    // Update the selected board (increment by 1, loop back to 0)
+    setSelectedBoard((prevSelectedBoard) =>
+      (prevSelectedBoard + 1) % props.numBoards
+    );
+  };
+
   let boards = [];
   for (let ii = 0; ii < props.numBoards; ii++) {
-    let isSelected = ii === 0;
+    let isSelected = ii === selectedBoard;
     boards.push(<Board index={ii} selected={isSelected} key={ii} />);
   }
 
   return (
     <div>
       <div className="boards">{boards}</div>
-      <button>Toggle</button>
+      {/* Toggle button with event handler */}
+      <button onClick={handleToggle}>Toggle</button>
     </div>
   );
 }