如何实现函数返回JQ ajax请求中success里返回的数据

$.ajax({ 
    url: "test.html",
    dataType: "json",//返回 JSON 数据
    success: function(data){
        //data就是返回值
        //data是接送对象，可以包含error属性
        if(data && data.error)
            console.log(data.error);
    }
});

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