Unable to locate the Promise variable in iOS 7

iOS 7 Safari is displaying the error Can't find variable: Promise:

new Promise(function(resolve, reject) {
.
.
.

While other browsers do not encounter this issue, I came across a similar question where Robert suggested using new Ember.RSVP.Promise instead of new Promise.

The problem I'm facing is that I don't use jQuery, causing all browsers to throw an error that Ember is not defined. I discovered that adding Ember.min.js resolves the issue, but it adds an additional 129.96 KB to my page, which is not ideal for my project.

I simply want to resolve the issue for iOS7, and I would greatly appreciate if someone who knows how could guide us on this.

Answer №1

To ensure compatibility with browsers lacking native promise support, it is recommended to incorporate a polyfill. A recommended option is this lightweight and user-friendly polyfill:

https://github.com/taylorhakes/promise-polyfill

Answer №2

Unfortunately, your browser does not have built-in support for promises, which means you will need to create your own. The good news is that implementing promises in JavaScript is not as difficult as it may seem. You have the option of using pre-existing code or tools like Babel to help you out.

If you're looking to implement promises, you can try using this resource: https://gist.github.com/unscriptable/814052

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