async.js

问题 I need to concatenate different mongoose query results to one array. i have a mongoose result like branch_data [ { _id: 59a270e53abb8426805b97fb, client_name: 'Client 1', branch_name: 'Branch 1', router_serial: '111111111', data_card_serial: '11111111', sim_number: '11111111111', modem_serial: '11111111111', idu_serial: '1111111111', dispatch_date: '08/27/2017', status: 'installed', action: 'primary();', __v: 0, ir_report: '201708271241491111111111.xlsx', notes: '111111111111111111', ip

问题 I decided to use Async module to populate a mongodb collection in the order that I want. Without Async the code works but the documents aren't inserted in the proper order: function insertRowInBLD(ref, riskstatements, maximpact, controleffectiveness, recommendedriskrating, frequency, impact, validatedreviewriskrating, rationalforriskadjustment) { const businessLineDashboard = new BusinessLineDashboard({ ref: ref, riskstatements: riskstatements, maximpact: maximpact, controleffectiveness:

问题 I am confused about how to use async.waterfall method to clean up my callbacks. I have a couple functions that are making API calls and returning back results from those API calls via callbacks. I want to pass the results from one api call to the next. I'd also ideally like to enclose these calls in separate functions rather than paste them directly into the async.waterfall control flow (for readability). I can't quite figure out if you can call a function that has a callback in it, and it

问题 I'm trying to traverse a tree of nested of items using async.js. The traversal terminates after going through just one branch. var count=0; exports.buildFamily = function(item_id, mback){ var extendedFamily={}; exports.getItembyId(item_id, function(err, item){ extendedFamily=item; if(item.descendants){ extendedFamily.kids=[]; count=+item.descendants.length; console.log('outercount ' + count); async.eachSeries(item.descendants, function(item){ count-- console.log('item: ' + item) exports

问题 I have multiple Gulp tasks that send a series of commands to the shell. The second task is dependent on the first. How do make ensure all commands sent to async.series in the first task are complete before the second task is executed. gulp.task('task1', function(cb) { process.chdir(__dirname); process.chdir('path'); var cmdArray = getCmdsForTask1(); runSeries(cmdArray, 'Task 1'); return cb(); }); gulp.task('task2',['task1'], function() { process.chdir(__dirname); process.chdir('task2_path');

问题 I am unfortunately new to node and running into some confusion regarding the asynchronous/synchronous execution of node. I am using node, sequelize with sqlite and async.js. I have a series of Articles , each of which has a number of Authors . For each Authors in each Article , I'd like to check if the Author exists. If not, create it. The problem is, on the initial run, duplicate authors are being created, I assume due to asynchronous functionality causing an issue with checking for

问题 Which is the fastest method gets the query to MYSQL, and then comes back to output: console.log('queries finished', results)" Is there an even better method? Please explain your answer! Thanks! Method 1: var connection = mysql.createConnection({multipleStatements: true}); connection.query('SELECT ?; SELECT ?', [1, 2], function(err, results) { if (err) throw err; console.log('queries done', results); }); Method 2: const Db = mysql.createPool({ connectionLimit: 7, dateStrings: true,

问题 I have been working with async.waterfall and nodejs. Its working very well but now I have a question about flow. I want to use a simple if condition in async.waterfall flow. async.waterfall([ callOne, callTwo, if(condition > 0 ) { callTest1, callTest2, }else{ callTest3, callTest4, } callThree, callFour, callFive, ], function (err, result) { if (err) { return res.status(400).jsonp({error: err}); } }); I just want to test for one condition .. If it is condition is true then run a few functions

问题 I have been working with async.waterfall and nodejs. Its working very well but now I have a question about flow. I want to use a simple if condition in async.waterfall flow. async.waterfall([ callOne, callTwo, if(condition > 0 ) { callTest1, callTest2, }else{ callTest3, callTest4, } callThree, callFour, callFive, ], function (err, result) { if (err) { return res.status(400).jsonp({error: err}); } }); I just want to test for one condition .. If it is condition is true then run a few functions

问题 async.map(list, function(object, callback) { async.series([ function(callback) { console.log("1"); var booltest = false; // assuming some logic is performed that may or may not change booltest if(booltest) { // finish this current function, move on to next function in series } else { // stop here and just die, dont move on to the next function in the series } callback(null, 'one'); }, function(callback) { console.log("2"); callback(null, 'two'); } ], function(err, done){ }); }); Is there some