1、报错信息：
报错Uncaught TypeError: Invalid attempt to spread non-iterable instance.
In order to be iterable, non-array objects must have a [Symbol.iterator]() method.
at _nonIterableSpread (OgPanel.js:20:39)
at _toConsumableArray (OgPanel.js:18:131)
at handleSearchUser (OgPanel.js:223:1)
at onSearch (Search.js:72:1)
at onPressEnter (Search.js:81:1)
at handleKeyDown (Input.js:136:1)
at HTMLUnknownElement.callCallback (react-dom.development.js:4164:1)
at Object.invokeGuardedCallbackDev (react-dom.development.js:4213:1)
at invokeGuardedCallback (react-dom.development.js:4277:1)
at invokeGuardedCallbackAndCatchFirstError (react-dom.development.js:4291:1)
在setTreeData 中报错
解决办法：
1、是因为我的搞错了，我以为[...topObj] 会转成数组。其实不行。
正确的应该是
setTreeData([...treeData]) 所以报错的关键就是在于，setTreeData输入的应该是数组，但是输入的不是数组，就会包上面的错误了。 标签：development,non,TypeError,attempt,js,react,报错,iterable From： https://www.cnblogs.com/wwssgg/p/18234364