Javascript：將變量傳遞給Promise

Question

我正在開發一個開源的EmberJS項目，該項目對信息進行Ajax請求，然後需要根據響應的動態子部分進行解析。

return new Promise((resolve, reject) => { 
    const { resourceName, identificationAttributeName } = this.getProperties('resourceName', 'identificationAttributeName'); 
    const data   = {}; 
    data[resourceName] = { password }; 
    data[resourceName][identificationAttributeName] = identification; 

    return this.makeRequest(data).then(
     (response) => run(null, resolve, response), 
     (xhr) => run(null, reject, xhr.responseJSON || xhr.responseText) 
    ); 
    }); 

....

makeRequest(data, options) { 
    const serverTokenEndpoint = this.get('serverTokenEndpoint'); 
    const requestOptions = $.extend({}, { 
    url:  serverTokenEndpoint, 
    type:  'POST', 
    dataType: 'json', 
    data, 
    beforeSend(xhr, settings) { 
     xhr.setRequestHeader('Accept', settings.accepts.json); 
    } 
    }, options || {}); 

    return $.ajax(requestOptions); 
} 

最後，我需要成功應對像

(response) => run(null, resolve, response[resourceName]) 

運行的東西，但響應函數裏面，我到沒有接入資源名稱。我將如何發送？

這裏是transpiled代碼：

var _this = this; 

    return new Promise(function (resolve, reject) { 
    var _getProperties2 = _this.getProperties('resourceName', 'identificationAttributeName'); 

    var resourceName = _getProperties2.resourceName; 
    var identificationAttributeName = _getProperties2.identificationAttributeName; 

    var data = {}; 
    data[resourceName] = { password: password }; 
    data[resourceName][identificationAttributeName] = identification; 

    return _this.makeRequest(data).then(function (response) { 
     run(null, resolve, response); 
    }, function (xhr) { 
     return run(null, reject, xhr.responseJSON || xhr.responseText); 
    }); 

Answer 1

但響應函數裏面，我到resourceName進不去。

當然，你呢 - 試試吧！箭頭功能create closures也是如此。

順便說一句，你應該avoid the Promise constructor antipattern（和而作出run回報的東西），你應該dodge jQuery deferreds有利於真正的承諾。