1、获取选中select的value和text,html代码如下:
<select id="mySelect"> <option value="1">one</option> <option value="2">two</option> <option value="3">three</option></select>
则可通过以下script代码s来获取选中的value和text
$("#mySelect").val(); //获取选中记录的value值 $("#mySelect option:selected").text(); //获取选中记录的text值
2、运用new Option("文本","值")方法添加选项option
var obj = document.getElementById("mySelect");obj.add(new Option("4","4"));
3、删除所有选项option
var obj = document.getElementById("mySelect");obj.options.length = 0;
4、删除选中选项option
var obj = document.getElementById("mySelect");var index = obj.selectedIndex;obj.options.remove(index);
5、修改选中选项option
var obj = document.getElementById("mySelect");var index = obj.selectedIndex;obj.options[index] = new Option("three",3); //更改对应的值obj.options[index].selected = true; //保持选中状态6、删除select
var obj = document.getElementById("mySelect");obj.parentNode.removeChild(obj); //移除当前对象
7、select选择的响应事件
$("#mySelect").change(function(){ //添加所需要执行的操作代码})
来源:https://www.cnblogs.com/xiangpiaopiao2011/archive/2011/06/15/2081580.html