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javascripttypeof

JavaScript typeof should be number but returns string

my problem is that I want to print out only the properties of my object which are strings. but when I check for the type of the property it's returning string also for a number..

Here's my code: 

var languages = {
    english: "Hello!",
    french: "Bonjour!",
    notALanguage: 4,
    spanish: "Hola!"
};

for(var prop in languages){
    console.log(typeof prop);   
}

The output is:

string
string
string
string

I'm sure it's just an easy to solve issue but I can't understand why typeof returns string for the property notALanguage...

Solution

  • prop will be a string representation of the property name.

    You want to test typeof languages[prop]