lab 4

lectures/04/hello/src/lib.rs

@@ -0,0 +1,13 @@
+mod utils;
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub fn greet(s: &str) {
+    alert(&format!("Hello, {s}!"));
+}