- var lost = [4, 8, 15, 16, 23, 42];
- var count = lost.length;
- var isLost = function (n) {
- for (var i = 0; i < lost.length; i++) {
- if ( n === lost[i]) {
- return true;
- }
- }
- return ;
- };
- if ( isLost(12) ) {
- console.log('12 is a lost number');
- }
- if ( isLost(16) ) {
- console.log('16 is a lost number');
- }