ReactJS-Interview-Questions/promise_API.html at main · shilpa-maity/ReactJS-Interview-Questions · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
      <script type="text/javascript">
           //create an Promise Object
            const myPromise = new Promise((resolve,reject)=>{
                let isValid = true;//boolean

                if(isValid){
                    resolve("Block gets executed");
                    resolve("Done");
                }
                else reject("Error Occured");
            });
           //calling the created Promise.
              myPromise
              .then((str)=>{
                console.log(str);
              })
              .then((str2)=>{
                console.log(str2);
              })
              .catch((error)=>{
                console.log(error);
              })
              .finally(()=>{
                console.log("Promise is working");
              });
          //Promise is an Unicast Object .
          //it can have only one value to be send at the same time.


      </script>
</body>
</html>