title: Iterating over google places JSON response
body: <p>Hi I have been able to get the JSON response back from google places and need to extract the photo reference element from it.</p>
  
  <p>I have tried to iterate over the places results and for each places results the photo_reference but i get the error message. </p>
  
  <p>TypeError: Cannot read property '0' or undefined.</p>
  
  <p><strong>What I have tried:</strong></p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>    response.on('end', function() {
        var places = JSON.parse(body);
        var locations = places.results;
        
        locations.forEach(function(loc) {
            var photoRef = loc.photos[0].photo_reference;
            console.log('Photo ref ==' + photoRef);
                  
        });
      });</code></pre>
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  </p>
  
  <p>Here is a sample of the JSON response.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>{
     "html_attributions" : [],
     "results" : [
        {
           "geometry" : {
              "location" : {
                 "lat" : 46.7725141,
                 "lng" : 23.62686099999999
              },
              "viewport" : {
                 "northeast" : {
                    "lat" : 46.77284264999999,
                    "lng" : 23.62798785
                 },
                 "southwest" : {
                    "lat" : 46.77152845000001,
                    "lng" : 23.62348045
                 }
              }
           },
           "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/lodging-71.png",
           "id" : "18ce6ff7131f1ffd9ce9b2558ba407eed7409aee",
           "name" : "Hotel Univers T",
           "photos" : [
              {
                 "height" : 1066,
                 "html_attributions" : [
                    "\u003ca href=\"https://maps.google.com/maps/contrib/116854836566418330262/photos\"\u003eHotel Univers T\u003c/a\u003e"
                 ],
                 "photo_reference" : "CoQBdwAAAE6Zi31LvtXmRM0orTBKDbJ3pgENKS82rVyP-462YhvrZAhhiDp2xowEiWsDNPU8tTmkXkhhB2ADKHi5GcptXSDx16GtG6RL9gpmogJw9BIR1JDiWSgMOzIE9xguxAQJ_s6Q9VHv77tQAmukc7JTJmBF_bFKQF3pVcmH6ffuUuiZEhDaF5BmQFqZRyeDOAA0KBkdGhSYpD-28mHr9XOKRb8dTheHJLA5bg",
                 "width" : 1069
              }
           ],
           "place_id" : "ChIJPzw_f2oMSUcRNl_Mz_sQS2c",
           "rating" : 4,
           "reference" : "CmRRAAAAGFISd-ET8V96LNII_v7yz5W80IuYIkLPyEPkf2dXWXudbM8YOfzaLDGMV1oNFl2YpN6dWEIDGl4TmAFP2wEYHPklveu-fXdFjUWA-w5cKapzxv0fdhSlSk4HkzpG9YN8EhDuT1KZUzs-O2h_eIjhgu5_GhSND6qUA9VG54QBT3csNWMaG_75Lw",
           "scope" : "GOOGLE",
           "types" : [
              "gym",
              "spa",
              "lodging",
              "health",
              "restaurant",
              "food",
              "point_of_interest",
              "establishment"
           ],
           "vicinity" : "Strada Alexandru Vaida Voevod 53-55, Cluj-Napoca"
        },
        {
           "geometry" : {
              "location" : {
                 "lat" : 46.7720145,
                 "lng" : 23.6257946
              },
              "viewport" : {
                 "northeast" : {
                    "lat" : 46.77209325,
                    "lng" : 23.62638825
                 },
                 "southwest" : {
                    "lat" : 46.77177825,
                    "lng" : 23.62401364999999
                 }
              }
           },
           "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png",
           "id" : "61f80d1a74e00b55a075cacde6fc95aa88bfa83f",
           "name" : "Pizza Hut Iulius Mall",
           "opening_hours" : {
              "open_now" : false,
              "weekday_text" : []
           },
           "photos" : [
              {
                 "height" : 2322,
                 "html_attributions" : [
                    "\u003ca href=\"https://maps.google.com/maps/contrib/112054611800145890609/photos\"\u003etamara ionescu\u003c/a\u003e"
                 ],
                 "photo_reference" : "CoQBdwAAAOdAY1sLwHqWZ1sEFvhZrqAoFCNo7DbthSnLMn1aI6lGxmGhfJdE7dLFDsJxjwSyh_0L3F2Mf_-Si12UmJ9CtaySu6SjHrqnaoF1WdafNDNLbkDbqjvesU0FqJid9V8poKU8Hhtb2PAvRe8lkfJF6N1ujIWWOxQlRfhHdjqN_BAAEhCTFmdXtQjfWiC3qbOZO3SqGhTIsansBf4AxGYnt6FnoslOVrqtyw",
                 "width" : 4128
              }
           ],
           "place_id" : "ChIJ-0XLwGoMSUcR87bDPcmCLHI",
           "price_level" : 1,
           "rating" : 4.1,
           "reference" : "CmRRAAAAby6PokNes7fY7vSBVfxZvOfZj5wehpXYD8oUFAYRgmyOwreZ-hsxByGOCb0SRRfD73muHIScP0lK7fVlMk7g2-B1tOqxHt60oDKPkfgbe42QogLNVDnAmjo1nGrtHGzUEhB9TPDl0pw_CSCpmcQkERp8GhT_kUf3Xb1CQLliMvvc_BStebrt_w",
           "scope" : "GOOGLE",
           "types" : [ "restaurant", "food", "point_of_interest", "establishment" ],
           "vicinity" : "Strada Alexandru Vaida Voevod 55, Cluj-Napoca"
        },
        {
           "geometry" : {
              "location" : {
                 "lat" : 46.7731014,
                 "lng" : 23.627801
              }
           },
           "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png",
           "id" : "32a93ffe70bbdd2c8485e346837ad61384e67bf1",
           "name" : "Hanul Dacilor",
           "opening_hours" : {
              "open_now" : false,
              "weekday_text" : []
           },
           "photos" : [
              {
                 "height" : 2988,
                 "html_attributions" : [
                    "\u003ca href=\"https://maps.google.com/maps/contrib/102010465058487677046/photos\"\u003eחוסין מוחמד\u003c/a\u003e"
                 ],
                 "photo_reference" : "CoQBdwAAALGMxPZEorGPgWzFhEX8GQ6KWqvl1Gs5s4w8n0-_wyFWNQ2AaxbUXjIZK_EXnEbI6UCM4YhVyjdObdpVyEtJ6oMJ1MG_GtW_BJi2Mc-75PPBX500rAbAy_jz-8L9NL4pdC1wHF6cwWj08xx2zBHammjvvB-DD_yeSjP5qt-GV09PEhDhOXdgy57rEKjg0N5pZ01CGhTeRa3PSqE-RkpI5vGjdDObho2AwQ",
                 "width" : 5312
              }
           ],
           "place_id" : "ChIJmRm5HmsMSUcRLIcHKiIRKmY",
           "rating" : 4.4,
           "reference" : "CmRRAAAA1mC_ed2g3YhFhzsrY8fXgE4Xida9jQ9BxpIk6raJpNmFUEJn00JciB3PRisZfOCpB3034vayac5_dqY8Bp_eQnS1HBSC0IdQp_Hu4Dcb_krbWQs6Sl7bTVSD5Rsu9LqmEhCDZdOMO2YJCNCh7n3-t0qbGhTI9ibzMsLx0OQUQ_oihQkUdr_Yhg",
           "scope" : "GOOGLE",
           "types" : [ "restaurant", "food", "point_of_interest", "establishment" ],
           "vicinity" : "Iulius Mall, Strada Alexandru Vaida Voevod 53-55, Cluj-Napoca"
        },
        {
           "geometry" : {
              "location" : {
                 "lat" : 46.771945,
                 "lng" : 23.626012
              }
           },
           "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png",
           "id" : "8d7bb32fd50d968c79c2e5048c12b95cec8cbb7d",
           "name" : "Marty City",
           "opening_hours" : {
              "open_now" : false,
              "weekday_text" : []
           },
           "photos" : [
              {
                 "height" : 1125,
                 "html_attributions" : [
                    "\u003ca href=\"https://maps.google.com/maps/contrib/114164649734885665448/photos\"\u003eMarty City\u003c/a\u003e"
                 ],
                 "photo_reference" : "CoQBcwAAAAfjwkLAWX73DgVUjKgP2uS39gFUilk6CrHCfdy-V4d1ZJrdZKzHOeqNqU0f5gHy9-MWeNGsY_2q7cJpi_b9_5oYneyQWs4U-zN6l5DxpeMdtrnNuNwd31b3BA_IEy7q_JZ8IlMScrqRspSBmq6tfFaTdnNZUwr0acvEOCVnwp2MEhCw0oErjn23GJoa5knp4gZuGhQ5ztJ1RbSe1zJbhCzAqJvAm-fN-Q",
                 "width" : 1500
              }
           ],
           "place_id" : "ChIJU22Cv2oMSUcR-rhmfyKJixA",
           "rating" : 3.8,
           "reference" : "CmRRAAAAHjaKSuIN_npID0s-cC2oJAJxwLZv-sOz0J9OW8AdiRzoqlQE1MMKH3aWDwKLB9P18uGxzgefxBnkc1_E4s-4gpJsTdmoATlxSoxsuQPGl4W0pXVHBZzpnvPHCSK5GyHEEhDarUaahHk1WNi7jzExovQ3GhS-KvRprEN1uPj-cw6PJcIqiDhl8A",
           "scope" : "GOOGLE",
           "types" : [ "restaurant", "food", "point_of_interest", "establishment" ],
           "vicinity" : "str. Alexandru Vaida Voievod 53, Cluj-Napoca"
        },</code></pre>
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