27/33 - TypeError: Cannot read property 'name' of undefined


#1

I have the following message after starting the script "TypeError: Cannot read property 'name' of undefined". I have no ideas, heelp, please...
Here is my code:
// Our Person constructor
function Person(name, age) {
this.name = name;
this.age = age;
}
// Now we can make an array of people
var family = new Array();
family[0] = new Person("alice", 40);
family[1] = new Person("bob", 42);
family[2] = new Person("michelle", 8);
family[3] = new Person("timmy", 6);
// loop through our new array
for(var i = 0; i <= family.length; i++) {
console.log(family[i].name);
}


#2

Your for loop condition will be executed 5 times when you only have four array items.
Your loop condition should be: for(var i = 0; i < family.length; i++) { without less than or equal sign.
When for loop is executed for last time it can't access name property at index 4 because it doesn't exist. That's why you get TypeError.


#3

So stupid mistake:D Thanks!