SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">

JavaScript

var members = [
    {
       name:"Alan Lim",
       id:"54700f06-a199-102c-8976-b1732b7ffc74",
       positions:[
          {
             id:"4cdeb2a2-8897-102d-80ee-95364de284f0"
          }
       ]
    },
    {
       name:"Ben Sinclair",
       id:"ed34b5a4-9b2f-102c-8475-9e610b13400a",
       conflict:"true",
       positions:[
          {
             id:"f00c2128-8895-102d-80ee-95364de284f0"
          },
          {
             id:"f00c68ea-8895-102d-80ee-95364de284f0"
          },
          {
             id:"4cde6824-8897-102d-80ee-95364de284f0"
          },
          {
             id:"4cde9ea2-8897-102d-80ee-95364de284f0"
          }
       ],
       locations:[
          {
             id:"88fb5f94-aaa6-102c-a4fa-1f05bca0eec6"
          },
          {
             id:"930555b0-a251-102c-a245-1559817ce81a"
          }
       ]
    },
    {
       name:"Debbie Wright",
       id:"fa49307a-9cfb-102d-bd08-842c500d506d"
    }
];

function setProp(name, prop, value) {
  for(var i=0; i<members.length; i++) {
    if(members[i].name == name)
       members[i][prop] = value;
  }
}
setProp("Alan Lim", "conflict", "true");

alert(members[0].conflict);