JoeWrights

大佬，我也有这种需求，现在找到解决办法了吗？

```js const arr2arrTree = (list) => { const initTree = () => { const map = {} list.forEach(item => { item.forEach((item2, i) => { map[item2] = {} if (i <...

```js Array.prototype.myFlatMap = function (callback) { let array = this const result = [] const getArrayDepth = (arr) => { if (!Array.isArray(arr)) throw new Error('参数必须是数组') const map = { '[':...

测试: ```js [1,2,3,4].myFlatMap(x => [[x * 2]]) // [[2],[4],[6],[8]] [1,2,3,4].myFlatMap(x => [[x * 2, x * 3]]) // [[2,3],[4,6],[6,9],[8,12]] [1,2,3,4].myFlatMap(x => [[[x * 2, x * 3]]]) // [[[2,3]],[[4,6]],[[6,9]],[[8,12]]] ```

```javascript function getTargetAndRest(target, originList) { let targetArr = [] for(let i = 0; i

> I've reproduced the issue in react with svg build with visx: https://codesandbox.io/s/visx-html2canvas-issue-l7ox9x?file=/src/App.js > > Does anyone have an idea, how to fix it? +1

一、获取其中某一种组合 ```js function twoSum(arr, target) { let first let second arr.forEach(element => { if (arr.includes(target - element)) { first = element } }) second = arr.find(ele => ele === target...

同问，vue文件里的style用不了命令