JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://code.jquery.com/jquery-3.1.1.js"></script>
<ul id="log"></ul>
JavaScript
Promise.resolve()
.then(function() {
return step(1)
.then(null, function() {
stepError(1);
});
})
.then(function() {
return step(2)
.then(null, function() {
stepError(2);
});
})
.then(function() {
return step(3)
.then(null, function() {
stepError(3);
});
});
var $log = $('#log');
function step(n) {
$log.append('<li>Step '+n+'</li>');
return (n === 2) ? Promise.reject(n) : Promise.resolve(n);
}
function stepError(n) {
$log.append('<li>Error '+n+'</li>');
return Promise.reject(n);
}