javascript - Sum all properties in object -

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i have following object:

{"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"}

i want sum values , print out. how can sum properties values? :)

  1. iterate on object properties using for(var in)
  2. use parseint since of integers in string form

var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"};  var sum = 0;    for(var key in obj){    sum += parseint(obj[key]);    }    document.write(sum);


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