Add key value to an object

Question

I want to push a key-value pair in the 1st element

Like this

 updatedPlatingProcs = [{
 "data":{
 "AsfTime":1,
 "newKey":"newValue" -- // this is where I wanna add the new key-value pair
 },
 "data2":{
 "Asf":3
 }
}]

I tried something like this

 var platingTimeVal = {
 PlatingTime: processArea * time,
 };
 updatedPlatingProcs[0]["data"].push(platingTimeVal);
 updatedPlatingProcs.push(platingTimeVal); // also this

Got wrong results

• DavidDomain: updatedPlatingProcs[0]["data"] is an Object, not an Array. You can not use the push method on an Object. This updatedPlatingProcs.push(platingTimeVal); should actually work.

Answer 1

Your error is that data in updatedPlatingProcs[0]["data"] is not an array, it is an object.

You can set a value of that object like so:

updatedPlatingProcs[0].data.PlatingTime = processArea * time;