#[tauri::command]
fn my_custom_command() {
  println!("I was invoked from JS!");
}

必须向构建器函数提供一个命令列表，如下所示：

// Also in main.rs
fn main() {
  tauri::Builder::default()
    // This is where you pass in your commands
    .invoke_handler(tauri::generate_handler![my_custom_command])
    .run(tauri::generate_context!())
    .expect("failed to run app");
}

现在，可以从 JS 代码中调用这个命令：

// When using the Tauri API npm package:
import { invoke } from '@tauri-apps/api/tauri'
// When using the Tauri global script (if not using the npm package)
// Be sure to set `build.withGlobalTauri` in `tauri.conf.json` to true
const invoke = window.__TAURI__.invoke

// Invoke the command
invoke('my_custom_command')