find number in array and remove 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: delete item from list javascript

const array = [1, 2, 3];
const index = array.indexOf(2);
if (index > -1) {
  array.splice(index, 1);
}