动态创建及删除select、添加及删除选项option、获得选项option的值、获得选项option的文本等等,感兴趣的朋友可以参考下
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")); }
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); }
转载原文:http://www.jb51.net/article/37698.htm