remove first element from array and return the array minus the first element

Why not use ES6?

 var myarray = ["item 1", "item 2", "item 3", "item 4"];
 const [, ...rest] = myarray;
 console.log(rest)

This should remove the first element, and then you can return the remaining:

var myarray = ["item 1", "item 2", "item 3", "item 4"];
    
myarray.shift();
alert(myarray);

As others have suggested, you could also use slice(1);

var myarray = ["item 1", "item 2", "item 3", "item 4"];
  
alert(myarray.slice(1));

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