In Javascript: How to print an array, use arr.remove(i) to remove the first 2 elements, and print the new array

Question

I need to write a program that prints out an array, removes the first two elements of the array using arr.remove(i), and then prints out the new array. My program correctly removes the first two elements, but I am having trouble with getting the program to print out the lists in the correct format.

The program should print out:

Sam, Lisa, Laurie, Bob, Ryan
Laurie, Bob, Ryan

My program prints out:

Sam, Lisa, Laurie, Bob, RyanLaurie, Bob, Ryan

This is my program:

function start(){
    var arr = ["Sam", "Lisa", "Laurie", "Bob", "Ryan"];

    for(var i = 0; i < arr.length; i++){
        print(arr[i]);

        if(i < arr.length - 1){
            print(", ");
        } 

    }


    var elem = arr.remove(0);
    var elem2 = arr.remove(0);


    for(var i = 0; i < arr.length; i++){
        print(arr[i]);

        if(i < arr.length - 1){

            print(", ");
        } 

    }

}

How can I fix this program so that it prints the new list on a different line?

https://stackoverflow.com/questions/5767325/how-do-i-remove-a-particular-element-from-an-array-in-javascript — Sanka, Jan 15 '18 at 02:16
Where is this `Array.remove` method documented? Programming will go much better if **reading and respecting the contents of error messages**. — user2864740, Jan 15 '18 at 02:21

score 2 · Accepted Answer · answered Jan 15 '18 at 02:19

2

Call print("\n") between the loops

answered Jan 15 '18 at 02:19

Jakub Licznerski

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score 1 · Answer 2 · edited Jan 15 '18 at 02:24

1

There is no Array.remove method. However, Array.splice can be used for removing elements:

if (index > -1) {
    array.splice(index, 1);
}

The second parameter of splice is the number of elements to remove. Note that splice modifies the array in place and returns a new array containing the elements that have been removed.

edited Jan 15 '18 at 02:24

user2864740

54,112
10
112
187

answered Jan 15 '18 at 02:18

Sanka

1,104
1
10
18

In Javascript: How to print an array, use arr.remove(i) to remove the first 2 elements, and print the new array

2 Answers2