FCC 中级算法题 Everything Be True

 1 function every(collection, pre) {
 2   // Is everyone being true?
 3   function isFit(element, index, array){
 4     return element[pre];
 5   }
 6   var rf=collection.every(isFit);
 7  
 8   return rf;
 9 }
10 
11 every([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}, {"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex");