Basic Data Structures: Iterate Through the Keys of an Object with a for...in Statement*

JavaScript
1

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-data-structures/iterate-through-the-keys-of-an-object-with-a-for...in-statement
What is the reason why this does not work?

function countOnline(usersObj) {
  // Only change code below this line
           
         for(let user in usersObj ){
                   let count=0;
                   if (user==online){
                       let newCount=count ++;
                   }return newCount;
         }

  // Only change code above this line

}
3

Thanks for your answer. I want to go trough my object, when I am into it (let count=0;) I started to count from 0. When I get in the loop, I write if the user is ist equal to online, then, if that is true, I sum 1 to newCount. The cycle repeat three times more and I should get in newAccount, the people who is online.

5

I want to count every true to get the users. I have made equal the access to the object to true. I should get the adding of every cycle.


  for(const user in users) {
          let count=0;
          if (user["online"]==true){
                   count+=1;       
          }
             return count; 
          
       }
7

I tried it again. I do not understand the reason why it is misconfigured the cycles in order to get the final value.

function countOnline(usersObj) {
  // Only change code below this line
          let count=0;
           
           for (const user in usersObj){
                  
                  if (user["online"]==true){
                      
                      let count=count + 1;
                  }
                  return count;
           }
  // Only change code above this line
}
8

You still have the issue with the location of your return statement. You only check the fisrt user before returning a value and exiting the function.

1 Like
9

This is the last task that it is being asked by the challenge. The function countOnline should use a for in statement to iterate through the object keys of the object passed to it. But, I used them.

function countOnline(usersObj) {
  // Only change code below this line
         
              let count=0;

           for (const user in usersObj){
                
                  if (usersObj[user]["online"]==true){
                      
                      count=count+1;
                        
                  }
           
           }
              return count;  
  // Only change code above this line
}
10

It is done. I am thankful for your time.

function countOnline(usersObj) {
  // Only change code below this line
         
              let count=0;

           for (let user in usersObj){
                
                  if (usersObj[user]["online"]==true){
                      
                      count=count+1;
                        
                  }
           
           }
              return count;  
  // Only change code above this line
}
1 Like