We can clear the contents just by reassigning the container element to an empty array. For example,
clear() { this.container = []; }
Example
You can check if this function is working fine using:
let q = new Queue(2); q.enqueue(3); q.enqueue(4); q.display(); q.clear(); q.display();
Output
This will give the output:
[ 3, 4 ] [ ]