迭代JSON并将数组更改为字符串

I have a JSON object that was returned from an XML to js function. This xml converter creates arrays for every entry even when they should be strings. I cannot modify this original function so therefore I would like to take my final json object, iterate through it, detect if a value is an array of length 1 and, if so, change that array to a string.

我有一个从XML返回到js函数的JSON对象。这个xml转换器为每个条目创建数组，即使它们应该是字符串。我无法修改此原始函数，因此我想获取我的最终json对象，遍历它，检测值是否为长度为1的数组，如果是，则将该数组更改为字符串。

Original object:

原始对象：

var json = {
  user: {
     name: ["bob"],
     email: ["[e-mail]"]
  },
  items: [{ 
    name: ["Object 1"]
  },{ 
    name: ["Object 2"]
  }]
}

Should become:

应该成为：

var json = {
  user: {
     name: "bob",
     email: "[e-mail]"
  },
  items: [{ 
    name: "Object 1"
  },{ 
    name: "Object 2"
  }]
}

I have considered the reviver function but a) I would like to avoid going back to a string and b) I am not sure if that would even work as it will probably just feed me each array element individually.

我已经考虑过reviver函数，但是a）我想避免回到字符串而b）我不确定这是否会起作用，因为它可能只是单独给我每个数组元素。

2 个解决方案

#1

This recursive function seems to work for this problem:

这个递归函数似乎适用于这个问题：

function simplify(obj) {
    for (var k in obj) {
        if (Object.prototype.toString.call(obj[k]) == '[object Array]' && obj[k].length == 1) {
            obj[k] = obj[k][0];
        }
        else if (typeof obj[k] == 'object') {
            obj[k] = simplify(obj[k]);
        }
    }
    return obj;
}

simplify(json);

Demo: http://jsfiddle.net/xkz4W/

#2

Here's a recursive way to do it:

这是一种递归方式：

function flattenArrays(data) {

    function processItem(item) {
        if (Array.isArray(item)) {
            if (item.length === 1 && typeof item[0] === "string") {
                data[prop] = item[0];
            } else {
                for (var i = 0; i < item.length; i++) {
                    processItem(item[i]);
                }
            }
        } else if (typeof item === "object") {
            flattenArrays(item);
        }
    }

    for (var prop in data) {
        processItem(data[prop]);
    }
}

Working demo: http://jsfiddle.net/jfriend00/L5WKs/

工作演示：http：//jsfiddle.net/jfriend00/L5WKs/