JS Symbol
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
</head>
<body>
<script type="text/javascript">
const _symbolKey = array => {
// 补全代码
let res = {};
array.forEach(i => {
res[Symbol(i)] = i;
})
return res;
}
console.log(_symbolKey([1,2,3,4]))
</script>
</body>
</html>
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