1、获取选中select的value和text,html
<select id="mySelect"> <option value="1">one</option> <option value="2">two</option> <option value="3">three</option> </select>
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})
1.动态创建select
function createSelect(){ var mySelect = document.createElement_x("select"); mySelect.id = "mySelect"; document.body.appendChild(mySelect); }
2.添加选项option
function addOption(){ //根据id查找对象, var obj=document.getElementByIdx_x('mySelect'); //添加一个选项 obj.add(new Option("文本","值")); //这个只能在IE中有效 obj.options.add(new Option("text","value")); //这个兼容IE与firefox }
3.删除所有选项option
function removeAll(){ var obj=document.getElementByIdx_x('mySelect'); obj.options.length=0; }
4.删除一个选项option
function removeOne(){ var obj=document.getElementByIdx_x('mySelect'); //index,要删除选项的序号,这里取当前选中选项的序号 var index=obj.selectedIndex; obj.options.remove(index); }
5.获得选项option的值
var obj=document.getElementByIdx_x('mySelect'); var index=obj.selectedIndex; //序号,取当前选中选项的序号 var val = obj.options[index].value;
6.获得选项option的文本
var obj=document.getElementByIdx_x('mySelect'); var index=obj.selectedIndex; //序号,取当前选中选项的序号 var val = obj.options[index].text;
7.修改选项option
var obj=document.getElementByIdx_x('mySelect'); var index=obj.selectedIndex; //序号,取当前选中选项的序号 var val = obj.options[index]=new Option("新文本","新值");
8.删除select
function removeSelect(){ var mySelect = document.getElementByIdx_x("mySelect"); mySelect.parentNode.removeChild(mySelect); }