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zackbloom avatar zackbloom commented on July 24, 2024

The native confirm and prompt dialogs have a strange property in that they pause execution of all javascript on the page until they are responded to. That ability allows you to do something like:

value = confirm();

The javascript interpreter will pause on that line until the confirm dialog is submitted.

Vex, being made of just javascript, not the magic dust the browser is made of, cannot do that, so we have to use a callback:

vex.dialog.confirm({
  message: 'Are you absolutely sure you want to destroy the alien planet?',
  callback: function(value) {
    return console.log(value ? 'Successfully destroyed the planet.' : 'Chicken.');
  }
});

Your callback function will be called with the response when the user has entered a value and clicked ok.

Ultimately, this is better, as we usually don't want to lock up the entire process while we're waiting for some input.

from vex.

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