lodash 检查值是否存在 includes

_.includes(collection, value, [fromIndex=0])

检查值是否在集合中，如果集合是字符串，那么检查值是否在字符串中。其他情况用 SameValueZero 等值比较。如果指定 fromIndex 是负数，从结尾开始检索。

<!DOCTYPE html>
<html lang="zh">

    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <meta http-equiv="X-UA-Compatible" content="ie=edge" />
        <title>检查值是否存在</title>
    </head>

    <body>
        <script src="https://cdn.bootcss.com/lodash.js/4.17.10/lodash.min.js"></script>
        <script type="text/javascript">
            console.log(_.includes([1, 2, 3], 1));
            //true
            console.log(_.includes({ 'user': 'fred', 'age': 40 }, 40));
            //true
            console.log(_.includes('pebbles', 'eb'));
            //true
        </script>
    </body>

</html>