比較兩個數組，僅顯示匹配的項目Jquery的

Question

var rundhalsArray = ["50237451_001", "50237451_100"]; 
var Array = ["50237451_001", "50237451_100", "50236765_001", "50236765_100"]; 

我有兩個數組，並想只顯示比較它們的這樣的結果，當匹配的項目上面會：

var resultArray = ["50237451_001", "50237451_100"]; 

Answer 1

http://jsfiddle.net/kL69J/

這是我會怎麼做：

var array1 = ["a", "b", "c", "d", "e", "f"]; 
var array2 = ["a", "b", "c", "d", "e", "f", "g", "h", "i"]; 
var foo = []; 

$.grep(array2, function(el) { 

    if ($.inArray(el, array1) != -1) { 
     foo.push(el); 
    } 

}); 


alert(" they have the same " + foo); 

Answer 2

JSFIDDLE DEMO

var rundhalsArray = ["50237451_001", "50237451_100"]; 
var arr = ["50237451_001", "50237451_100", "50236765_001", "50236765_100"]; 

var result = []; 
$.map(rundhalsArray, function (val, i) { 
    if ($.inArray(val, arr) > -1) { 
     result.push(val); 
    } 
}); 
console.log(result);