How can i use a property name passed as paramenter?

Question

I have a function that do something with an array of objects and i need to have just the name of property of another object to access it but i get undefined. It seems that i can't use a string to access to the object

function myFunction(arrayOfObjects, propName)
{
     for(var i = 0; i < arrayOfObjects.length; i++)
     {
         //This will give undefined, propName is simply a string coming from Object.keys()
         arrayOfObjects[i].propName = something;
     }

    return something;
}

Call to the function

var arrayOfNameProp = Object.keys(myObject);

var x = myFunction(arrayOfObjects, arrayOfNameProp[0]);

Typing your question title + "javascript" into Google would have led you to https://stackoverflow.com/questions/13760186/ in now time. — CBroe, Jul 08 '18 at 12:13

score 2 · Accepted Answer · answered Jul 08 '18 at 12:08

2

As you pass it as a string, use bracket notation [propName] instead of dot notation .propName

arrayOfObjects[i][propName] = something;

answered Jul 08 '18 at 12:08

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How can i use a property name passed as paramenter?

1 Answers1