how to store values in an array (stack or queue) using JavaScript -


device 1 details: 

{     "positions": [{         "address": "1326 13 cross rd, bengaluru, ka, in",         "protocol": "osmand",         "fixtime": "2017-01-19t11:58:40.000+05:30",         "devicetime": "2017-01-19t11:58:40.000+05:30",         "latitude": 12.9750062,         "longitude": 77.63568398,         "valid": true,         "speed": 0.0,         "outdated": false,         "altitude": 808.0,         "course": 0.0,         "deviceid": 2,         "id": 545,         "attributes": {             "battery": "62.0",             "ip": "192.168.0.107",             "distance": 0.13,             "totaldistance": 3307.1         }     }] }

device 2 details : 

{     "positions": [{             "address": "1326 13 cross rd, bengaluru, ka, in",             "protocol": "osmand",             "fixtime": "2017-01-18t17:38:29.000+05:30",             "devicetime": "2017-01-18t17:38:29.000+05:30",             "latitude": 12.9750375,             "longitude": 77.6356692,             "servertime": "2017-01-18t17:38:31.000+05:30",             "valid": true,             "speed": 0.0,             "outdated": false,             "altitude": 0.0,             "course": 0.0,             "deviceid": 1,             "id": 262,             "attributes": {                 "battery": "55.0",                 "ip": "192.168.0.108",                 "distance": 0.0,                 "totaldistance": 26.96             }         }

i need store position of these devices in separate stack simultaneously , fetched according device

function updatemaplive(positions) {     (i = 0; < positions.length; i++) {         console.log(positions[i].longitude + "," + positions[i].latitude);          var latlong = positions[i].longitude + "," + positions[i].latitude;         var deviceid = positions[i].deviceid;         var q = new queue();          q.enqueue(latlong);         arr.push(latlong);          console.log(deviceid);     } }  function queue() {     this.stac = new array();      this.dequeue = function () {         return this.stac.pop();     }      this.enqueue = function (item) {         this.stac.unshift(item);     } }

  1. array.splice() thing looking for. use instead of unshift & pop. read here to enqueue use this & to dequeue use this.

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