[рони]

rand01m,

function isContains(number, array) {
         var numberArray = String(number).split('');
         return numberArray.every(function(elem) {
             return array.indexOf(+elem) != -1
         }) && array.every(function(elem) {
             return numberArray.indexOf('' + elem) != -1
         });
     }
     alert(isContains(449, [4, 9]));
     //true
     alert(isContains(134, [1, 3]));
     //false
     alert(isContains(18, [8, 1]));
     //true
     alert(isContains(18, [7, 1]));
     //false
     alert(isContains(3, [1, 3]));
     //false