您可以使用.queue()，$.map()以保持范圍name。此外，改變status陣列的具有屬性的對象status，其中值是一個數(shù)組，以防止可能出現(xiàn)的沖突this.status的Person對象。

請注意，您也可以連接.promise(/* queueName*/)在執(zhí)行任務(wù).then()時，在所有排隊的功能queueName，IEG，'status'一直呼吁，queueName.length是0。

function Person(name, status){ this.name = name; this.status = status;}var blob = new Blob([’{'stream':null}’], {type:'application/json'});var url = URL.createObjectURL(blob);// change `status` array reference, e.g., to `arr`var arr = {status:[]};var array = ['bill','bob','carl','ton'];$(arr).queue('status', $.map(array, function(curr) { return function(next) { var name = curr; // do asynchronous stuff $.ajax({url:url, dataType:'json'}) .then(function(data) { if(data.stream == null){ var person = new Person(name, 'dead'); console.log(name, person); arr.status.push(person); } }) .then(next) // call next function in `'status'` queue }})).dequeue('status').promise('status')// do stuff when all functions in `'status'` queue have completed,// `'status'` queue `.length` is `0`.then(function() { // `this` : `arr` as jQuery object // `this[0].status`: array containing objects pushed to `arr.status` console.log(this[0].status); // $(this).prop('status');});<script src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js'></script>

jsfiddle https://jsfiddle.net/nnayjckc/2/

您也可以使用$.when()，.apply()，$.map()，返回相同的結(jié)果

function Person(name, status) { this.name = name; this.status = status;}var blob = new Blob([’{'stream':null}’], { type: 'application/json'});var url = URL.createObjectURL(blob);// change `status` array reference, e.g., to `arr`var arr = { status: []};var array = ['bill', 'bob', 'carl', 'ton'];$.when.apply($, $.map(array, function(curr) { var name = curr; return $.ajax({ url: url, dataType: 'json' }) .then(function(data) { if (data.stream == null) {var person = new Person(name, 'dead');console.log(name, person);arr.status.push(person); } })})).then(function() { console.log(arr.status)});<script src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js'></script>

jsfiddle https://jsfiddle.net/nnayjckc/3/

我正在嘗試遍歷數(shù)組，并為for循環(huán)分配變量。所以像這樣：

function Person(name,status){ this.name = name; this.status = status;}var status = [];var array = ['bill','bob','carl','ton'];function exAjax(function(){ for(var i = 0; i < array.length; i++){ var name = array[i]; console.log(name); =====> this gives the correct name $.ajax({ url: xxxxxxx,success: function(data){ if(data.stream === null){ var person = new Person(name,'dead'); console.log(name); =====> return undefined until the last person status.push(person); } } }) name = ''; }})

我遇到的問題是名稱沒有進入成功功能。我以為js會繼續(xù)向上查找該變量，如果它在當前作用域中不存在？如果嘗試console.logname，我將無法為name變量定義！示波器大師我在做什么錯？