Tips for verifying the "truthiness" of an object, removing any falsy values, and making changes to the object

I am faced with the task of examining each property of an object to determine if it is truthy, and then removing any that are not. 

var user = {
name: 'my name', 
email: null,
pwHash: 'U+Ldlngx2BYQk',
birthday: undefined,
username: 'myname33',
age: 0
}

This is the code I attempted to use 

function truth(x) {
    if (x) {
    console.log("truthy");
    } else {
    delete; 
    }
}

for (x in user) {
    truth(user[x]);    
}

However, the code is not functioning as expected and I'm uncertain if I am accurately checking for truthiness. Can you please assist in identifying my mistake?

javascriptobjecttruthiness

Answer №1

When deleting an object property, make sure to specify both the object and property for successful deletion.

Mere value passed from the property won't suffice, hence it's essential to provide object reference and property name when calling the function.

for (x in user) {
  if(user[x]) {
    console.log("truthy");
  } else {
    delete user[x];
  }
}

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