datepicker clone 控件错误

删除id，并删除hasDatepicker

//+ - 
function changeRows(sender,desc){
var tr = $(sender).closest("tr");
var table = tr.parent();
if(desc<0){
if(table.find("tr").length>1){
tr.remove();
}else{
tr.find("input[type=text]").val("");
tr.find("input[type=checkbox]").removeAttr("checked");
}
}else{
var newrow = $(tr).clone(true);
$(tr).after(newrow);
newrow.find(".date").removeAttr("id").removeClass('hasDatepicker').datepicker({ dateFormat: 'yy-mm-dd' }); 
newrow.find("input[type=text]").val("");
newrow.find("input[type=checkbox]").removeAttr("checked");
}
}

参考：

ar $clone=$(".datepicker").clone(); $clone.datepicker("destroy"); $clone.removeAttr("id"); $clone.datepicker(); $('form').append($clone);

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