我用以下方法将sql查询结果放到html的下拉框中,但是运行结果如图所示,请问是什么原因呀
var sql = " select ZCH_SWPDFA_PDMC pdmc,ZCH_SWPDFA_PDNM pdnm from ZCH_SWPDFA ";
var list = window.MobileAPI.querySqlRetJson(sql);
let arr = Object.values(list);
let com = document.getElementById("pdtzdmc");
for( let i = 0;i<arr.length;i++){
com.options.add(new Option(arr[i],i));
}