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Javascript – How to know if an external URL is loaded successfully from the main process when using window.open() from the renderer process

Is it possible to identify whether an external URL is loaded successfully or not from the main process, when window.open("http://example.com") is called from the renderer process?

Something like…

mainWindow.webContents.on('did-url-load', () => {
  // Do something
});

mainWindow.webContents.on('did-url-loading-failed', () => {
  // Do something
});
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2

Answers


  1. 0

    On MDN’s Window.open() page:

    A WindowProxy object, which is basically a thin wrapper for the Window object representing the newly created window, and has all its features available. If the window couldn’t be opened, the returned value is instead null.

    So, i think you should just check for the return value of window.open:

    var dir = 'https://www.url.com';
var newWindow = window.open(url, 'main');

if (newWindow== null) {
  // Failed
} else {
  // Success
}
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  2. 0

    In case you have control over the page you’d like to open, you could use cross window communication methods. In the new window you hook into an events that fits your needs (onload?) and send a mesg over to the other window.

    Maybe an Iframe also serves your needs?

    Have a look at:
    https://javascript.info/cross-window-communication

    Cheers

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