Sum all properties in object

Question

I have the following object:

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

I want to sum all this

Answer 1

var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"};


function sum(obj){
    var sum = 0;
    for(var key in obj){
      if (obj. hasOwnProperty(key)) {
          sum += parseInt(obj[key]) || 0;  
       }
    }
    return sum
}

console.log(sum(obj));

parseInt(obj[key]) || 0; is important id the value is not a number