从javascript对象属性创建路径

本文介绍了从javascript对象属性创建路径的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

假设我有以下javascript对象

Let's say I've got the following javascript object

var obj = { a:{ b:"value", c:{ d:"value2" } } }

当用"d"对象(例如，function getPath(obj, d))输入时，什么功能输出"a.c.d"字符串?我已经尝试过各种方法，包括对象路径，但它似乎不是设计好的为此

What function would, when input with the "d" object (for example, function getPath(obj, d)), output the "a.c.d" string? I've tried various things including object-path, but it doesn't seem to be designed for that

推荐答案

您可以使用迭代和递归方法.

You could use an iterative and recursive approach.

function getPath(object, key) { function iter(o, p) { if (typeof o === 'object') { return Object.keys(o).some(function (k) { return iter(o[k], p.concat(k)); }); } if (p[p.length - 1] === key) { path = p; return true; } } var path = []; iter(object, []); return path.join('.'); } console.log(getPath({ d: { d: { d: { d: 'val' } } } }, 'd')); console.log(getPath({ a: { b: 'value', c: { d: 'value2' } } }, 'd'));

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