[removed] using typeof to check if string

Question

I\'m working on a codecademy.com exercise where we use for-in statements to loop through an object and print hello in different languages by checking to see if the values of the

Answer 1

"string" is not the same as String. I've found one way to test typeof for string.

if (typeof something === typeof "test") ...

You can of course use "string" to compare to, but any actual String will do.

Answer 2

this is the for in value to work for me

for(var x in languages){

if(typeof languages[x] === "string"){
    console.log(languages[x]);
} else }

Answer 3

You are checking keys of the object, not the value. It's usually a good practice to check against the constructor of an object to determine its type.

Something like this:

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

for(i in languages) {

  if(languages[i].constructor === String) {
    console.log(languages[i])   
  };

};

Answer 4

The below coding is also useful to perform only string value.By using variable to access the property list of abject after that by using it check the value is a NotANumber by using isNaN.The code given below is useful to you

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

// print hello in the 3 different languages
for(a in languages)
{
if(isNaN(languages[a]))
console.log(languages[a]);
}

Answer 5

That's because you're checking the key of the object. To check the actual value, you should be doing something like object[key]. Try this:

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

// print hello in the 3 different languages
for(var hello in languages){
    var value = languages[hello];
    if (typeof value === "string"){
    console.log(value); 
    }
}

Answer 6

Here is the answer: (use typeof and then the object name followed by the var in your for statement and test whether it is equal to "string")

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

// print hello in the 3 different languages
for (var x in languages){
    if (typeof languages[x] === "string"){
        console.log(languages[x]);
    }
    else ;
}