Edit in JSFiddle

var isAboveTen = function(element, index, array){ //show all arguments passed
    return element >= 10;
};

array1 = [4,3,4,3,4,1,9];
array2 = [432,43,4321,43,121,314,31,10,31,88];

//does array1 contain any number that is equal to or above 10
console.log(array1.some(isAboveTen)); //logs false

//does array2 contain any number that is equal to or above 10
console.log(array2.some(isAboveTen)); //logs true