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JavaScript 2020 新特性
tryjs_promise_allsettled
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<!DOCTYPE html> <html> <body> <h1>JavaScript Promise Object</h1> <h2>The Promise.allSettled() Method</h2> <p id="demo"></p> <script> // Funtion to display something function myDisplayer(some) { document.getElementById("demo").innerHTML += some; } // Create a Promise const myPromise1 = new Promise((resolve, reject) => { setTimeout(resolve, 200, "King"); }); // Create another Promise const myPromise2 = new Promise((resolve, reject) => { setTimeout(resolve, 100, "Queen"); }); // Settle All Promise.allSettled([myPromise1, myPromise2]) .then(function(values) { myDisplayer(JSON.stringify(values)); }); </script> </body> </html>