javascript - Getting nested data from firebase database by "onchildchanged" and "onchildadded" returns something unrecognizable -


console_screenshot

screenshot of console displays output i.e. child added in messages directory of 1 of users.

, must noticed have displayed short portion of console, console displaying similar output each , every messages. if more screenshots required clarification, please tell me, add them!

json code:

{ "tf42gluiuvbf1ygmx1cseyd6evc3" : {   "intents" : {     "intentfields" : "",     "intentname" : ""   },   "messages" : {     "-kvivgc7zg051emxp0-5" : {       "name" : "ed",       "photourl" : "https://cdn1.iconfinder.com/data/icons/user-pictures/100/male3-512.png",       "text" : "hello, i'm ed, personal assistant cum friend",       "timestamp" : "1476880306"     },     "-kw3c8azybp_-bilwmnv" : {       "name" : "aakash bansal",       "photourl" : "https://lh5.googleusercontent.com/-oqya4hxvycc/aaaaaaaaaai/aaaaaaaahko/ov0a0p0ljiy/s96-c/photo.jpg",       "text" : "hi",         //this message displayed in console above.       "timestamp" : "1478613047"     }   } }, "gfiprphchemkqg2tgui1aolir3x1" : {   "intents" : {     "intentfields" : "",     "intentname" : ""   },   "messages" : {     "-kvivgc7zg051emxp0-5" : {       "name" : "ed",       "photourl" : "https://cdn1.iconfinder.com/data/icons/user-pictures/100/male3-512.png",       "text" : "hello, i'm ed, personal assistant cum friend",       "timestamp" : "1476880306"     }   } }

}

this node.js code:

ref.on("child_changed", function(snapshot){     snapshot.ref.child("messages").on("child_added", function(itemsnapshot) {         var mytemp = itemsnapshot.child("text");     console.log(mytemp);   }); });



note viewed similar questions on stackoverflow when implemented them, came know belonged outdated version of firebase , didn't work in current version.

edit using following code, i'm getting null each child added. also, want ask how parent's or user's id child has changed. code is:

ref.on("child_changed", function(snapshot){ //using limittolast(1) last value snapshot.ref.child("messages").orderbykey().limittolast(1).once("value", function(itemsnapshot) {     var mytemp = itemsnapshot.child("text").val(); console.log(mytemp);

}); });

console.png screenshot of console after using code got answer aove question, remaining doubt how parent of node child has changed?

please feel free ask more clarification if , when needed
thanks!!

i think may looking this:

ref.on("child_changed", function(snapshot){     snapshot.child("messages").foreach(function(itemsnapshot) {         var mytemp = itemsnapshot.child("text").val();         console.log(mytemp);     }); });

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