1. <input type=file>
2.
html+=v.attr_name+' : ';
html+="<a href='javascript:void(0)' onclick='addrow(this)'>[+]</a>";
html+="<select name=ga["+v.id+"][]>";
html+="<option value=''>请选择</option>";
var arr=v.attr_option_values.split(',');
var length=arr.length;
for(i=0;i<length;i++){
html+="<option value='"+arr[i]+"'>"+arr[i]+"</option>";
}
html+="</select>";
3.
