javascript - What is the best way to approach pagination with Promises? -

my friend , working promises, , making sure getting pages of data before returning our initial call. there more trivial way approach this?

function getdocuments(startindex, result, entries) {      startindex = typeof startindex !== 'undefined' ? startindex : 0;     result = typeof result !== 'undefined' ? result : {};     entries = typeof entries !== 'undefined' ? entries : [];      // build our entries set result parameter      for(var in result.items) {         try         {             var id = result.items[i].id;             var name = result.items[i].name;             var content = result.items[i].content;             var entry = { "id": id, "name": name, "content": content };             entries.push(entry);         }         catch(e) {         }     }      // return promise fulfills promise returns either promise or result.     return new promise(function(fulfill, reject) {         // fulfill promise , resolve value, pass recursive promise value.         fulfill(documentclient.getdocuments({ "startindex": startindex }).then(function(result) { // once our request made, let's check page count.             var startindex = result.startindex;             var pagesize   = result.pagesize;             var totalcount = result.totalcount;             if (startindex + pagesize <= totalcount) { // if our current position not @ end of pages, return promise our current data , our current entries.                 return getdocuments(startindex + pagesize, result, entries);             }             return entries; // otherwise our entries bubble stack , resolved initial fulfill value.         }));     }); }  getdocuments().then(function(d) { console.log(d.length); }); 

my adjustments:

function getdocuments(startindex, result, entries) {      startindex = typeof startindex !== 'undefined' ? startindex : 0;     result = typeof result !== 'undefined' ? result : {};     entries = typeof entries !== 'undefined' ? entries : [];      // build our entries set result parameter      // ...      // return promise fulfills promise returns either promise or result.     return documentclient.getdocuments({ "startindex": startindex }).then(function(result) { // once our request made, let's check page count.         var startindex = result.startindex;         var pagesize   = result.pagesize;         var totalcount = result.totalcount;         if (startindex + pagesize <= totalcount) { // if our current position not @ end of pages, return promise our current data , our current entries.             return getdocuments(startindex + pagesize, result, entries);         }         return entries; // otherwise our entries bubble stack , resolved initial fulfill value.     }); }  getdocuments().then(function(d) { console.log(d.length); }); 

yes, can chain promises documentclient.getdocuments returns promise.

function getdocuments(startindex, result, entries) {     // ...     return documentclient.getdocuments({ "startindex": startindex }).then(function(result) {         // ...         return entries; // otherwise our entries bubble stack , resolved initial fulfill value.     }); }  getdocuments().then(function(d) { console.log(d.length); });