javascript - paginating through a CRUD API -

i writing client query crud web api. be using socket.io.get('/api'). problem is: want paginate results, can start displaying stuff while client still receiving data.

the results api come json, like

[   {     "id": "216754",     "date": "2015-07-30t02:00:00.000z"   },   {     "id": "216755",     "date": "2015-08-30t02:00:00.000z"   } ] 

the api lets me construct url query can limit size of each result array. can make query /api&skip=10&limit=10, , me results item 10 item 19. want able keep looping , receiving results until results array less length = 10 (that mean reached end of dataset). , need asynchronous, can start work on data right start , update whatever work have done each time new page received.

is infinite scroll trying do? or want call pages asynchronously , able receive page 3 before page 2? reading question, understand second.

you can't rely on "until results array less length = 10" since want launch calls @ same time.

you should a first query retrieve number of records. able know how many pages there are, generate urls need , call them asynchronously.

it looks (code not tested):

var nbitemsperpage = 10;  socket.io.get(   '/api/count',  // <= have code controller returns count   function(rescount) {     nbpages = rescount / nbitemsperpage;     (var i=0; i<nbpages; i++) {       // javascript loop without waiting responses       (function (pagenum) {         socket.io.get(           '/api',           {skip:nbitemsperpage*pagenum, limit=nbitemsperpage},           function (resget) {             console.log('result of page ' + pagenum + ' received');             console.log(resget);           }       )(i);  // <= immediate function, passing "i" argument              // indeed, when callback function executed, value of "i" have changed              // using immediate function, create new scope store pagenum every loop     }   } )   

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if trying archive infinite scroll page, have load page n+1 after received content of page n , can rely on results.length < 10