javascript - Need help creating async function with callback -

-

i have json object entries (appointments) each thereof "location id". loop trough these entries , emit request nodejs server socketio data document location id.

at end need array data of lat/lng create marker on map.

here code:

//controller showing map .controller('mapctrl', function($scope, socket){      socket.emit('getapp', staticuserid);          socket.on('getapps', function (appdata) {                 var locarr = [];                 (var = 0; < appdata.length; i++) {                     if (appdata[i].locationid != '') {                         locarr.push(appdata[i].locationid);                     }                 }                 var latlngarr = [];                 (var j = 0; j < locarr.length; j++) {                     socket.emit('getlocation', locarr[j]);                     socket.on('getloc', function (locdata) {                         console.log('received lat/lng: ' + locdata.lat + '/' + locdata.lng);                         if (!latlngarr[j]) latlngarr[j] = []                         latlngarr[j][0] = locdata.lat;                         latlngarr[j][1] = locdata.lng;                     });                 }                 //console.log('test:'+latlngarr[0][0]);         });      var newmarkers = [[52.549678, 13.3879516],[52.5442992, 13.352809],[52.5186283,13.3761181]]; // should generated array     var newcenter = [52.549678, 13.3879516];     createmap(newcenter,newmarkers);  })

the problem is, var latlngarr isn't defined out of the...

socket.on('getloc', function (locdata)

it nice if can me :-)

thanks much!

if can use promises

.controller('mapctrl', function($scope, socket){      socket.emit('getapp', staticuserid);      socket.on('getapps', function (appdata) {         var locarr = [];         (var = 0; < appdata.length; i++) {             if (appdata[i].locationid != '') {                 locarr.push(appdata[i].locationid);             }         }         var latlngarr = [];         var promises = [];         (var j = 0; j < locarr.length; j++) {             promises[j] = (function(captured_j) {                 return new promise(function(resolve, reject) {                     socket.emit('getlocation', locarr[captured_j]);                     socket.on('getloc', function (locdata) {                         console.log('received lat/lng: ' + locdata.lat + '/' + locdata.lng);                         if (!latlngarr[captured_j]) latlngarr[captured_j] = []                         latlngarr[captured_j][0] = locdata.lat;                         latlngarr[captured_j][1] = locdata.lng;                         resolve({index: captured_j, result: latlngarr[captured_j]});                     });                 });             }(j));         }         promise.all(promises).then(function(arr) {             // ******************************************             // ******************************************             // arr array of {index: #, result [lat, lng]} - can use latlngarr             // ******************************************             // ******************************************         });     });     var newmarkers = [[52.549678, 13.3879516],[52.5442992, 13.352809],[52.5186283,13.3761181]]; // should generated array     var newcenter = [52.549678, 13.3879516];     createmap(newcenter,newmarkers); })

Comments

Post a Comment

Popular posts from this blog

Fail to load namespace Spring Security http://www.springframework.org/security/tags -

-
i have problem namespace of spring security on xhtml page. don't understand why can't load uri, , have following issue: whitelabel error page application has no explicit mapping /error, seeing fallback. tue jul 21 16:58:12 utc 2015 there unexpected error (type=not found, status=404). please need help! possible uri has been changed? best regards you using incorrect namespace url. correct url http://www.springframework.org/schema/security the error page seeing spring source website since not recognize url. try visiting http://www.springsource.org/security/tags in browser update : spring security tags used in jsp page correct tag lib declaration is: <%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
Read more

sql - MySQL query optimization using coalesce -

-
can explain me why second query faster first? (first 1 takes around 40 seconds, second 1 less 0.1) select releases.feature_code, releases.platform_id, version, release_date, general_available, uri, filesize, display_name, feature_name.full_name, if ((select exists(select 1 release_exceptions releases.feature_code = release_exceptions.feature_code , releases.platform_id = release_exceptions.platform_id , releases.version = release_exceptions.version) = 1), 1, 0) release_exceptions releases left outer join platform using(platform_id) left outer join feature_name using(feature_code) order version desc; ~~~ query 2 ------------------ ~~~ select feature_code, version, release_date, general_available, platform_id, uri, filesize, display_name, feature_name.full_name, coalesce(release_exceptions, 0) release_exceptions mus.releases left outer join ( select distinct feature_code, version, platform_id, 1 release_exceptions mus.release_exceptions ) release_exceptions using ...
Read more

unity3d - Unity local avoidance in user created world -

-
i'm using unity3d networked multiplayer online game have large complex 3d terrain scene forest, trees, cliff, hills, mountains, bounders, etc. players can build structures sort of minecraft, , put them anywhere in scene, or move them around anytime. aside human controlled players, there automated ai players , objects animals roaming around scene following path. the problem how make these automated ai players , animals, able navigate around static , dynamic player created structures, because path follow can blocked player created structures, or other players , other ai objects, cliffs etc. have find away around them or on track if tumble down off high cliff example. so made navmesh , used navagents, takes care of static, non moving objects, how make ai players navigate around each other , dynamic structures created players can number in hundreds? i thought of adding navmeshobstacle everything, result in being attached hundreds of objects since user created structures b...
Read more