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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects The Build an Object Challenge, Part 2 Solution

Jordan Featherstone
Jordan Featherstone
5,973 Points
Posted by Jordan Featherstone
Jordan Featherstone
5,973 Points

Another solution? Nested loops, Good Idea?

I Have used a nested for in loop within the for loop to print out the data within the Un-ordered List.

var html = '<ul>';
for(var i =0; i<students.length; i+=1){
    for (var prop in students[i]){
        html += '<li>' + students[i][prop] + '</li>';    
     }   
}
html += '</ul>';
document.write(html);

This to me seems a more particle solution because i'm not hard coding each property of the objects, am i correct to use this method or is this a bad practice?

Obviously i can make this more robust and 'Team friendly' by putting this into a function and another script. I was just wondering if this is a valid way to print of multiple objects?

Thanks J

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

:point_right: It depends on what functionality you want to achieve.

This method is good for showing the properties that exist for each student. But the original method would also show where expected properties might be missing on the student.

For example, if a student had no "track" property, your method would not show anything for track, but the original one would display "Track: undefined".

So either method could be considered "valid", as long as difference in behavior fits the needs of the task.

Jordan Featherstone
Jordan Featherstone
5,973 Points
Jordan Featherstone
Jordan Featherstone
5,973 Points

Could that not be easily solved with a if statement 

 if (students['prop'] === ' '){
     #print property + custom 'undefined' message;
 }

I understand where you are coming from, Thank you for you reply.