var labelName = {};
labelName["Name"]="James"
labelName["Sex"]="1"

结果：labelName={"Name":"James","Sex":1};

var getData ={"Label":"Dong","Sex":"1","Address":"China"};
$.each(getData, function (key, value) {
    ……
 })

var getData ={"Label":"Dong","Sex":"1","Address":"China"};
delete getData["Label"];