I have the following object:
{"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"}
I want to sum all this values and print It out. How can I sum the properties values? :)
for(var in)
parseInt
since some of the integers are 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);
Here's a way of doing it using ES5's Object.keys and reduce :
var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"}; var sum = Object.keys(obj).reduce(function(prev, current, index) { return prev + (+obj[current]); }, 0); console.log(sum); // 746
My for-less version:
var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"}; function sumProperties(obj) { return Object.getOwnPropertyNames(obj) .map(function(item){ return +obj[item];}) .reduce(function(acc,item) { return acc + item; }); } document.write(sumProperties(obj));
Given
var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional": 299}
you can do it very easily with the lodash library:
var result = _.sum(obj);
If some of your values aren't numbers, you need to map them to numbers first:
var result = _.sum(_.map(obj, function(n){
return +n;
//or parseInt(n) or parseInt(n,10)
}));
You can do it this way:
var sum_object = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"};
var sum = 0;
for( var index in sum_object ){
sum += parseInt(sum_object[index]);
console.log("Val: ",sum_object[index], sum);
};
console.log(sum);
JSFiddle: http://jsfiddle.net/abvuh5m0/
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
Using Lodash:
var obj = {"speed":299,"equipment":49,"teleabb":49,"additional":50,"optional":"299"};
var val = _.sumBy(_.values(obj), function(v) {
return parseInt(v)
});
Example: https://codepen.io/dieterich/pen/dyymoxM?editors=0012
var sum = 0;
for(var key in objects) {
sum += parseInt(objects[key]);
}
console.log(sum);
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