js 对象动态添加属性、合并属性

var obj = {a:1, name: 'test'};
var shuxing = {name:"super",sex:"19",work:"IT"};
for(var r in shuxing){
eval("obj."+r+"=shuxing."+r);
}
alert(obj.a);
alert(obj.name);
alert(obj.sex);
alert(obj.work);

function objMerger(obj1, obj2)
{
for(var r in obj2){
eval("obj1."+r+"=obj2."+r);
}
return obj1;
}
obj = objMerger(obj, shuxing);

var searObj = {};
$("div .search input").each(function(_ind,_obj) {
      var val = _obj.value;
      var name = _obj.name;
      eval("searObj."+name+"='"+val+"'");
});
_grid.datagrid("reload",searObj);