How I can stop my script execute if external script not loaded

Question

I have an object Checkout that I invoke from external script, some times when I invoke it, I get erorr masage Checkout is not defined because I think this object loaded before external script. Is there a way to fix this error

external script

<script src="https://example.com/checkout.js"></script>

my script

$( document ).ready(function() {
    Checkout.dosomething();
});

You'd be far better off fixing the intermittent loading issue instead of putting a band-aid fix on this. Surely this script is essential for page functionality - what are you expecting to happen if the script isn't available, other than to sweep the error under the rug. If the order of the scripts is the issue, address that instead. — Rory McCrossan
– Rory McCrossan, Commented Apr 29, 2020 at 15:11
please don't forget to accept the answer stackoverflow.com/help/accepted-answer — IAfanasov
– IAfanasov, Commented Jun 8, 2020 at 5:34

IAfanasov · Accepted Answer · 2020-04-29 15:06:11Z

1

The best way would be to order script loading in such a way that the dependant script would be loaded after the dependencies load.

As a workaround, you can check if the dependency is accessible inside your script.

$( document ).ready(function() {
    if (!Checkout) {
        return;
    }
    Checkout.dosomething();
});

answered Apr 29, 2020 at 15:06

IAfanasov

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