breautek commented on issue #723:
URL: https://github.com/apache/cordova-ios/issues/723#issuecomment-751407768
> As far as I know, the only way to ensure it is by adding a setTimeout(...,
0) to make sure that the handleOpenURL that is called in the objective-c code
is not executed before the deviceready that the cordova developer wirtes.
The objective-c code uses `deviceready`:
```javascript
document.addEventListener('deviceready', function() {
if (typeof handleOpenURL === 'function') {
handleOpenURL(\"%@\");
}
});
```
Where `%@` is a native string placeholder to be replaced with another value.
So `handleOpenURL` will never be called before `deviceready` because it's
inside the `deviceready` event. But you do still need to make sure
`handleOpenURL` is defined before this occurs.
So using my both example where you may have something like this in your html:
```html
<script src="cordova.js"></script>
<script src="myapp.js"></script>
```
And if you have `myapp.js`: :heavy_check_mark:
```javascript
var handleOpenURL = function(url) {
// do stuff
};
document.addEventListener('deviceready', function() {
// initialize app
});
```
I'm like 99% sure that would work just fine, as long as you declare the
`handleOpenURL` where it is assigned as `myapp.js` file is parsed by the
browser.
If you do the following: :x:
```javascript
document.addEventListener('deviceready', function() {
var handleOpenURL = function(url) {
// This will definitely cause a race condition
};
// initialize app
});
setTimeout(function() {
var handleOpenURL = function(url) {
// This will also cause a race condition, because handleOpenURL is
being set asynchronously.
};
}, 0);
```
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