Nodejs Bulk Import data Eventproxy (callback function nesting solution) using instances

callback function Nesting Solution--eventproxy

API Address: Https://github.com/JacksonTian/eventproxy

1, installation Eventproxy

Perform NPM install Eventproxy.

2, before the use of the Declaration, the Code is as follows:

var EP = require (' Eventproxy ');

3, according to the API to make the corresponding method call, the code is as follows:

Ajax.post ('/user/login ', {name:‘********‘, pwd:‘******‘, Rememberpwd:true        }, function(resp, headers) {if(resp.success) {Console.log ("Begin Import"); Ajax.header.cookie= headers[' Set-cookie ']; varBaseimports =[importdict];
                var EP = new EP ();                    Ep.after (' Importbase ', baseimports.length, function () {importshop ();                Console.log ("Import Finish");                }); $.each (baseimports, function (FN) {fn (EP);            }); }            Else{Console.log (' Login fail '); }        });

According to the instructions in the API, Ep.after implementation after the completion of the method in each, the implementation of Importshop, the implementation of asynchronous callback function, avoid multi-layered nesting.

In addition to after, Eventproxy offers many ways to make the code simpler and more readable.

Parallel example, the code is as follows:

varEP = Eventproxy.create ("template", "Data", "l10n",function(template, data, l10n) {_.template (template, data, l10n);}); $.get ("Template",function(template) {//somethingEp.emit ("template", template);}); $.get ("Data",function(data) {//somethingEp.emit ("Data", data);}); $.get ("L10n",function(l10n) {//somethingEp.emit ("l10n", l10n);});

Loop-type Invocation example. The code is as follows:

 var  EP = new   Eventproxy (); Ep.after ( ' got_file ', Files.length, function    //  After the asynchronous execution of all files is executed, the  //   for  (var  i = 0; i < files.length; I++ ' utf-8 ', function   (err, Content) { //  trigger result event  Ep.emit (' Got  _file ' 

This article according to Eventproxy according to the Eventproxy API to write, the corresponding example from the API, if there are shortcomings, please forgive.

Nodejs Bulk Import data Eventproxy (callback function nesting solution) using instances