js 解析 json对象值里面的变量

    var tt="192.168.0.1"
    var t1="127.0.0.1"
    var str={};
    str[tt] = [{"key1":"张三"}];
    str[t1] = [{"key1":"李四"}];
    var data=JSON.stringify(str)  
    console.log(data);//{"192.168.0.1":[{"key1":"张三"}],"127.0.0.1":[{"key1":"李四"}]}