[Solved] how to select a specific entry from a JSON object

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To retrieve the value of foo3, you can just use JSON.Parse with a callback function that will only return the value of foo3 if it is present.

Here is a working snippet:

var text="{"foo1":"1123","foo2":"332","foo3":"23-SEP-15"}";
JSON.parse(text, function(k,v){
  if (k === 'foo3') {
    document.write(v);
  }
  return v; 
});

Here, in function(k,v), k stands for the key and v stands for the value.
You can find more working examples of how to parse JSON with JavaScript at the provided MDN link above.

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solved how to select a specific entry from a JSON object