1-Promise的狀態修改
阿新 • • 發佈：2022-01-02
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<script>
let p = new Promise((resolve, reject) => {
// 改變狀態,
// 1.呼叫resolve函式, 狀態由pending => fulfilled/resolved(成功)
// resolve("Ok");
// 2.呼叫reject函式, 狀態由pending => rejected(失敗)
// reject("Error");
// 3.丟擲錯誤,或者丟擲錯誤的例項物件
throw "出問題了!";
});
console.log(p); </script> </body> </html>
console.log(p); </script> </body> </html>