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up vote 0 down vote favorite

Here's my json file, I am trying to access the properties inside the group such as homeTeam and markerImage.

And how do determine the number of groups inside the competition. Please help!

{
   "competition":{
      "group1":[
         {
            "homeTeam":"Lawrence Library",
            "markerImage":"images/red.png",
         },
         {
            "homeTeam":"Hamilton Library",
            "markerImage":"images/white.png",

         },
         {
            "homeTeam":"Applebees",
            "markerImage":"images/newcastle.png",

         }
      ],
      "group2":[
         {
            "homeTeam":"Lawrence Library",
            "markerImage":"images/red.png",

         },
         {
            "homeTeam":"Hamilton Library",
            "markerImage":"images/white.png",

         },
         {
            "homeTeam":"Applebees",
            "markerImage":"images/newcastle.png",
         }
      ]
   }
}
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up vote 1 down vote accepted

To determine the number of groups in competition object you can use 

Object.keys(obj.competition).length

console.log(Object.keys(obj.competition).length);

And to loop trought your groups try something like this

for(var x in Object(obj.competition.group1)){
    var newObj = Object(obj.competition.group1[x]);
    console.log(newObj.homeTeam + ' and '+ newObj.markerImage);
}
share|improve this answer
    
thanks ! It works... – 1033 Jul 25 at 4:13
up vote 0 down vote
  1. Parse your JSON object and store it in a javascript object
  2. Use underscore and lo-Dash libraries to calculate number of objects

Link to calculate it with Underscore and Lo-Dash libraries

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