javascript - Auto-summarising JSON objects -

i want summarise json data objects in webpage. method can think of read r, run summarise(), extract report json , read webpage , write dom. know less idiotic method getting equivalent intelligent summary doesn't involve r?

is there equivalent in javascript/jquery json objects?

the closest thing object.keys , array#reduce, visits each array entry (each property name — key — in case) , calls callback passing accumulator reduce operation , value of entry. instance, sum looks this:

var obj = {    foo: 42,    bar: 27,    baz: 51  };  var sum = object.keys(obj).reduce(function(acc, key) {    return acc + obj[key];  }, 0); // <== 0 = seed value accumulator  snippet.log(sum);

<!-- script provides `snippet` object, see http://meta.stackexchange.com/a/242144/134069 -->  <script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

other that, you're libraries.