inplement tree to list and list to tree with javascript
list to tree
<!DOCTYPE html>
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<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
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<s...
eddieqiao.hashnode.dev2 min read