javascript中的lambda表达式

时间 2020-11-30

标签 html express 数组 spa code htm blog console class 栏目 JavaScript 繁體版

原文原文链接

<!DOCTYPE html>
<html>
<head>
</head>
<body>
    <script>
        var nubList = [ { expressId: "00001", //快递单号ID
                    expressNum: "数据1" }, { expressId: "00002", //快递单号ID
                    expressNum: "数据2" }, { expressId: "00003", //快递单号ID
                    expressNum: "数据3" }, { expressId: "00004", //快递单号ID
                    expressNum: "数据4" } ]; var nub = nubList.find(nub => nub.expressId == "00002"); console.log(nub.expressId); var nub1 = nubList.filter(nub => nub.expressId == "00002"); console.log(nub1[0].expressId); </script>
</body>
</html>

数据来自网上。html

find和filter这两个的区别是：express

find返回的是一条数据；数组

filter返回的是一个数组；spa