Re: [w3c/payment-request] Dont block UI if .updateWith() not called (closes #589) (#591)

marcoscaceres commented on this pull request.



> +          <aside class="note">
+            <p>
+              If a developer wants to update the payment request, then they
+              need to call <a>updateWith()</a> and provide a
+              <a>PaymentDetailsUpdate</a> dictionary, or a promise for one,
+              containing changed values that the <a>user agent</a> presents to
+              the user.
+            </p>
+            <p>
+              To prevent the user interface from blocking (and to reflect
+              changes made by the end-user through the UI), developers need to
+              immediately call <a>updateWith()</a>. If they don't,
+              <a>[[\didUpdate]]</a> becomes true and <a>updateWith()</a>
+              will throw.
+            </p>
+            <pre class="example" title="how to use `updateWith()` correctly.">

I plan to add support for this in ReSpec, so will leave it for now and we will get this for free soon.

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