lodash获取数组或对象的值 at

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    <title>获取数组或对象的值title>
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    <script src="https://cdn.bootcss.com/lodash.js/4.17.10/lodash.min.js">script>
    <script type="text/javascript">
        var obj = { 'a': 5};
        var arr = [1,2,3,4]
        console.log(_.at(obj,'a'))
        console.log(_.at(arr,3))
    script>
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