答复: js 实现下拉列表的重复利用

原帖《js 实现下拉列表的重复利用 》

可以优化一下代码：

<div id="nation">民族：</div>
<div id="shengxiao">生肖：</div>
<div id="degree">学位：</div>
<div id="self">自定义：</div>
<script>	
function createSelect(c){
	var _inner = {
		"nation" : ['汉族','蒙古族','彝族','侗族','哈萨克族', 
			'畲族','纳西族','仫佬族','仡佬族','怒族','保安族', 
			'鄂伦春族','回族','壮族','瑶族','傣族','高山族', 
			'景颇族','羌族','锡伯族','乌孜别克族','裕固族','赫哲族', 
			'藏族','布依族','白族','黎族','拉祜族','柯尔克孜族','布朗族', 
			'阿昌族','俄罗斯族','京族','门巴族','维吾尔族','朝鲜族', 
			'土家族','傈僳族','水族','土族','撒拉族','普米族','鄂温克族', 
			'塔塔尔族','珞巴族','苗族','满族','哈尼族','佤族','东乡族', 
			'达斡尔族','毛南族','塔吉克族','德昂族','独龙族','基诺族'],
		"shengxiao" : ['鼠','牛','虎','兔','蛇','蛇','马','羊','猴','鸡','狗','猪'],
		"degree" : ['小学','初中','高中','中专','大专','本科','硕士','博士']
	}
	var _array = c["array"] || _inner[c["type"]];
	var _select = document.createElement("select");
	for(var i=0; i < _array.length; i++){
		_select.options[i] = new Option(_array[i], _array[i]);
		_array[i] == c["selected"] && (_select.options[i].selected = true);
	}
	c["id"] && (_select.id = c["id"]);
	c["name"] && (_select.name = c["name"]);
	c["onchange"] && (_select.onchange = c["onchange"]);
	return _select;
}

//应用
function $(id){return document.getElementById(id);}
$("nation").appendChild(createSelect({type : "nation", selected : "蒙古族",onchange : function(){alert(this.value)}}));
$("shengxiao").appendChild(createSelect({type : "shengxiao", selected : "虎", id : "shengxiao"}));
$("degree").appendChild(createSelect({type : "degree", selected : "本科", name : "degree"}));
$("self").appendChild(createSelect({array : ["你","我","他"], selected : "他"}));
</script>