在JavaScript中組合兩個數組

Question

我可以像這樣在JavaScript中合併兩個數組嗎？

這些陣列：

arr1 = ['one','two','three']; 
arr2 = [1,2,3]; 

到

arr3 = ['one': 1, 'two': 2, 'three' : 3] 

Answer 1

var arr3 = {}; 
for (var i = 0; i < arr1.length; i++) { 
    arr3[arr1[i]] = arr2[i]; 
} 

請注意：arr3不陣列，這是object。

Answer 2

Loop！

var arr1 = ['one','two','three']; 
var arr2 = [1,2,3]; 
var result = {}; 

for(var i = 0; i < arr1.length; i++) { 
    result[arr1[i]] = arr2[i]; 
} 

Answer 3

就因爲你說in jQuery，這裏是一個jQuery $.each版本。

arr1 = ['one','two','three']; 
arr2 = [1,2,3]; 
arr3 = {}; 
$.each(arr1, function(i, value){ 
    arr3[value] = arr2[i]; 
}); 
console.log(JSON.stringify(arr3)); 

輸出 - >

{"one":1,"two":2,"three":3} 

here's a working jsFiddle

Answer 4

您可以使用Array.prototype.reduce ...

var arr3 = arr1.reduce(function(obj, val, i) { 
    obj[val] = arr2[i]; 
    return obj; 
}, {}); 

DEMO：http://jsfiddle.net/GMxcM/

{ 
    "one": 1, 
    "two": 2, 
    "three": 3 
} 

Answer 5

即使簡單：

$.merge(arr1, arr2);