how to remove first element to compare with second array javascript code example
Example 1: remove all from array that matches
var array = [1,2,'deleted',4,5,'deleted',6,7];
var newarr = array.filter(function(a){return a !== 'deleted'})
Example 2: js remove item from array by value
var arr = ['bill', 'is', 'not', 'lame'];
arr.splice(output_items.indexOf('not'), 1);
console.log(arr) //returns ['bill', 'is', 'lame']