javascript containsAll

사용자 정의해야 함.

Array.prototype.containsAll = function(otherArray) {

if(otherArray == null) return false;

if(this.length < otherArray.length) return false;

  

var origin = this;

return otherArray.every(function(otherVal) {

return origin.indexOf(otherVal) >= 0;

});

}

var a = new Array(1,2,3);

var b = new Array(5);

alert(a.containsAll(b));

 ==> false