如何从关键字符串

Question

建立嵌套属性

var keys1 = ["foo", "moreFoo"], 
value1 = "bar", 
keys2 = ["foo", "ultraFoo"], 
value2 = "bigBar"; 

我想使这会为我建造对象的函数：

object { 
foo : {moreFoo: "bar", ultraFoo: "bigBar"} 
} 

我认为把我的阵列中的每一个，并执行以下操作：

function recursiveObjectBuild(object, keys, value) { 
    var index = 0; 
    function loop(object, index) { 
     var key = keys[index]; 
     //Property exists, go into it 
     if (key in object) { 
      loop(object[key], ++index); 
     //Property doesn't exist, create it and go into it 
     } else if (index < keys.length-1) { 
      object[key] = {}; 
      loop(object[key], ++index); 
     //At last key, set value 
     } else { 
      object[key] = value; 
      return object; 
     } 
    } 
    return loop(object, 0); 
} 

哪个应该工作国际海事组织但不（无限循环，必须是一个愚蠢的错误，但不能看到它）。

而且我敢肯定，必须有一个更简单的方法

Answer 1

尝试以下操作：

function objectBuild(object, keys, value) { 
    for (var i = 0; i < keys.length-1; i++) { 
     if (!object.hasOwnProperty(keys[i])) 
      object[keys[i]] = {}; 
     object = object[keys[i]]; 
    } 
    object[keys[keys.length-1]] = value; 
} 

用法示例（see it in action）：

var object = {}; 
objectBuild(object, ["foo", "moreFoo"], "bar"); 
objectBuild(object, ["foo", "ultraFoo"], "bigBar"); 
// object --> {foo: {moreFoo: "bar", ultraFoo: "bigBar}}