Asynchronous operation guide for Javascript processing loops

Case:

() This is an asynchronous method, which handles some actual business. At this time, the printout is likely to be 300, 300, 300 (because the asynchronous for loop has not yet waited for the asynchronous operation to return to the Promise object, and the i value has changed to 300)

function getMoney(){
    var money=[100,200,300]
    for(let i=0; i<; i++){
        ().then(()=>{
            (money[i])
        })
    }
}

1. Async/await processing ideas

async function getMoney(){
    var money=[100,200,300]
    for( let i=0; i&lt;; i++){
        await ().then(()=&gt;{
            (money[i])
        })
    }
}
// async tells the getMoney method that there is an asynchronous operation// awaitPut specific asynchronous operations（method）Front，It means waiting for the asynchronous returnPromiseWill continue the subsequent operation

2. Recursive processing ideas

function getMoney(i) {
var money=[100,200,300]
().then(() =&gt; {
if ( i &lt;  ) {
　 (money[i]);
　 i++;
      getMoney(i);
    }
  　});
}
getMoney(0);//Start the call//Recursion to realize self-loop（The specific cycle isthenin，Ensure the front()The asynchronous operation is completed）.then()Yes returnedPromiseThe object isresolveIt only took place later（Can learn about itPromiseObject）

Summarize

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