动态添加下拉选项

JS

window.onload = function(){
	var _addOptions = document.getElementById("addOptions"),
			_addOption = document.getElementById("addOption"),
			addOptions = function(target, optons){//添加option
				var _option = null,
						ol = optons.length,
						i = 0,
						_v = "",
						_t = "";
				for(; i < ol ; i++ ){
					_v = optons[i].value;
					_t = optons[i].text;
					_option = document.createElement("OPTION");//创建空option引用
					_option.value = _v;//添加值
					_option.text = _t;//添加文本
					target.options.add(_option);//增加option
				}
			};
	_addOptions.onclick = function(){
		addOptions(_addOption, [
			{
				"value":"新添加的元素",
				"text":"新添加的元素"
			}
		])

	}
};