promiseのonFulfilled、onRejected
<apex:page>
<html>
<head>
</head>
<body>
<script type="text/javascript">
const resolvedProm = Promise.resolve(33);
let thenProm = resolvedProm.then(value => {
console.log("this gets called after the end of the main stack. the value received and returned is: " + value);
return value;
});
// instantly logging the value of thenProm
console.log(thenProm);
// using setTimeout we can postpone the execution of a function to the moment the stack is empty
setTimeout(() => {
console.log(thenProm);
});
</script>
</body>
</html>
</apex:page>結果
