向jquery树对象添加值 [英] Adding a value to a jquery tree object

问题描述

假设我有一个这样的对象.

Suppose I have an object like that.

var t = {
    "obj1": {
        "obj1.1": "test",
        "obj1.2": {
            "obj1.1.1": null, // <-- "obj1.1.1" has to have a value.
            "obj1.1.2": "test"
        }
    }
};

还有我要在其中添加值的节点的路径，即:

And a path to the node where I'd like to add a value, i.e.:

var path = ['obj1', 'obj1.1', 'test'];

如何以编程方式添加值?

How do I add the value programmatically?

推荐答案

尝试一下:

function setDeepValue(obj, value, path) {
    if(path.length > 1){
        var p=path.shift();
        if(obj[p]==null || typeof obj[p]!== 'object'){
            obj[p] = {};
        }
        setDeepValue(obj[p], value, path);
    }else{
        obj[path[0]] = value;
    }
}

var obj = {};
var path = ['obj1', 'obj1.1'];
setDeepValue(obj, 'test', path);
console.log(obj); // {"obj1":{"obj1.1":"test"}}

但是，您将需要修复对象:

You will however need to fix your object:

var t = {
    "obj1": {
        "obj1.1": "test",
        "obj1.2": {
            "obj1.1.1": null, // <-- "obj1.1.1" has to have a value.
            "obj1.1.2": "test"
        }
    }
};

一个对象不能有一个没有值的键，所以"obj1.1.1"将必须有一个值，即使它是null.

A object can't have a key without a value, so "obj1.1.1" will have to have a value, even if it's null.

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