js行内变量传参，函数内部实参调用

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<!DOCTYPE html><html>    <head>        <meta charset="utf-8" />        <title></title>    </head>    <body>        <button onclick="ddd(this.name)" name="people">11111111111111111</button>        <script type="text/javascript" src="js/jquery.js"></script>        <script>            var aa;            function getData() {                $.ajax({                    type: "get",                    url: "test.json",                    dataType: "json",                    async: false,                    success: function(data) {                        aa = data;                    }                });                return aa;            }            var b = getData();                   console.log(b)            function ddd(obj) {                $.each(b, function(k, v) {                    if(k == obj) {                        for(var i in v){                            console.log(v[i].name)                        }                    }                });            }        </script>    </body></html>test.json:{"people":[{"name":"张三","age":"3"},{"name":"里斯","age":"4"}],"employees": [{ "firstName":"Bill" , "lastName":"Gates" },{ "firstName":"George" , "lastName":"Bush" },{ "firstName":"Thomas" , "lastName":"Carter" }]}

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