nwjs - 在二进制文件上调用 function

Question

// source.js
function foo(){
    alert("its work!");
}

// main.js
nw.Window.open("index.html", {}, function (win) {});
setTimeout(() => {
  let win = nw.Window.get();
  win.evalNWBin(null, "binary.bin");
  foo();
}, 2000);

i run follow command to generate binary file:

nwjc source.js binary.bin

and when i run above code it shows this error:

Uncaught ReferenceError: foo is not defined

how can I call function on binary.bin from main js?

Answer 1

Because you are doing "main": "index.js" in your package.json , the code will run in the Node context and alert is not a function.

If you instead do "main": "index.html" then have

<script>
  nw.Window.get().evalNWBin(null, 'binary.bin');
  foo();
</script>

it will work fine.

You can Right-Click > Inspect Background Page to see the node process dev tools for console log errors.

Alternatively, you can expose your function on the global window object.

window.foo = function () {
  alert('It works');
};

And you can wait for the App Window to load by putting your code in the callback function.

nw.Window.open('index.html', {}, function (win) {
  win.evalNWBin(null, 'binary.bin');
  win.window.foo();
});

Then you don't need to "get" the window, you already have it. And you can access its global window object to reach stuff stored on it.