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So, Promise in an object defined in the javascript library?<br />
<br />
Anything that starts with Promise. is a method also defined in the &nbsp;javascript library?<br />
<br />
What about isPromise() ?<br />
<br />
fulfill()
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So, Promise in an object defined in the javascript library?

Anything that starts with Promise. is a method also defined in the  javascript library?

What about isPromise() ?

fulfill()

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This comes from here:<br />
<a href="https://www.promisejs.org/patterns/" rel="ugc">https://www.promisejs.org/patterns/</a><br />
<br />
I am not sure what key words are defined by jQuery versus what is needed in this implementation...<br />
<br />
var maybePromise = Math.random() &gt;&nbsp;0.5 ? 10 : Promise.resolve(10);<br />
var definitelyPromise = Promise.resolve(maybePromi<wbr />se);<br />
// equivalent to<br />
var definitelyPromise = new Promise(function (fulfill, reject) {<br />
&nbsp; if (isPromise(maybePromise)) {<br />
&nbsp; &nbsp; maybePromise.then(fulfill,<wbr /> reject);<br />
&nbsp; } else {<br />
&nbsp; &nbsp; fulfill(maybePromise);<br />
&nbsp; }<br />
});
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This comes from here:
https://www.promisejs.org/patterns/

I am not sure what key words are defined by jQuery versus what is needed in this implementation...

var maybePromise = Math.random() > 0.5 ? 10 : Promise.resolve(10);
var definitelyPromise = Promise.resolve(maybePromise);
// equivalent to
var definitelyPromise = new Promise(function (fulfill, reject) {
  if (isPromise(maybePromise)) {
    maybePromise.then(fulfill, reject);
  } else {
    fulfill(maybePromise);
  }
});

Please explain a jQuery promise

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.