In my javascript, before calling wasm, I define a function jalert that I later want to call from Rust using wasm. I couldn't find in the documentation for wasm-bindgen how to call an arbitrary function that I previously defined in javascript as below. I got functions like alert and console.log to work, because they are already part of javascript, but I couldn't have this function jalert to work. I get an error in the browser, saying that it is not defined. With the alert function, it doesn't complain.
function jalert(sometext) {
alert(sometext);
}
jalert("I am Claudio");
// This works from Javascript
In the Rust file lib.rs:
#[wasm_bindgen]
extern "C" {
fn alert(s: &str);
fn jalert(s: &str);
}
#[wasm_bindgen]
pub fn run_alert(item: &str) {
jalert(&format!("This is WASM calling javascript function jalert and {}", item));
alert(&format!("This is WASM and {}", item));
}
// The alert() code works fine. The jalert() call in run_alert() gives me a browser error that jalert is not defined