js深度拷贝一个元素的具体实现？

“`”

参考回答：

<pre><code class=""language-javascript"" lang=""javascript"">var deepCopy = function(obj) {
if (typeof obj !== 'object') return;
var newObj = obj instanceof Array ? [] : {};
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
newObj[key] = typeof obj[key] === 'object' ? deepCopy(obj[key]) : obj[key];
}
}
return newObj;
}

</code></pre>

<pre><code> "“`