javascript 将数组转换为关联数组的函数
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Function to convert an Array to an Associative array
提问by Murtaza Khursheed Hussain
Possible Duplicate:
Convert flat array [k1,v1,k2,v2] to object {k1:v1,k2:v2} in JavaScript?
可能的重复：
在 JavaScript 中将平面数组 [k1,v1,k2,v2] 转换为对象 {k1:v1,k2:v2}？
I want to convert an array to an associative array in JavaScript.
我想在 JavaScript 中将数组转换为关联数组。
For example, given the following input,
例如，给定以下输入，
var a = ['a', 'b', 'c', 'd'];
I want to get the next associative array as output:
我想获得下一个关联数组作为输出：
{'a' : 'b', 'c' : 'd'}
How can I do that?
我怎样才能做到这一点？
回答by Rob W
Using .forEach:
使用.forEach：
var a = ['a', 'b', 'c', 'd'];
var obj_a = {};
a.forEach(function(val, i) {
if (i % 2 === 1) return; // Skip all even elements (= odd indexes)
obj_a[val] = a[i + 1]; // Assign the next element as a value of the object,
// using the current value as key
});
// Test output:
JSON.stringify(obj_a); // {"a":"b","c":"d"}
回答by Rich O'Kelly
Try the following:
请尝试以下操作：
var obj = {};
for (var i = 0, length = a.length; i < length; i += 2) {
obj[a[i]] = a[i+1];
}
回答by Willem Mulder
There is no such thing as an associative array, they're called Objects but do pretty much the same :-)
没有关联数组这样的东西，它们被称为Objects 但几乎相同:-)
Here's how you would do the conversion
以下是您将如何进行转换
var obj = {}; // "associative array" or Object
var a = ['a', 'b', 'c', 'd'];
for(index in a) {
if (index % 2 == 0) {
var key = a[index];
var val = a[index+1];
obj[key] = val;
}
}
