Select 跳转

function MM_jumpMenu(targ,selObj,restore){ //v3.0  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");  if (restore) selObj.selectedIndex=0;}

<select name="menu1" onchange="MM_jumpMenu('parent',this,0)">  <option selected="selected" value="http://www.google.com">快速导航</option>  <option  value="http://www.google.com">google</option></select>

1 检测是否有选中if(objSelect.selectedIndex > -1) {//说明选中} else {//说明没有选中}

2 删除被选中的项 objSelect.options[objSelect.selectedIndex] = null;

3 增加项objSelect.options[objSelect.length] = new Option("你好","hello");

4 修改所选择中的项objSelect.options[objSelect.selectedIndex] = new Option("你好","hello");

5 得到所选择项的文本objSelect.options[objSelect.selectedIndex].text;

6 得到所选择项的值objSelect.options[objSelect.selectedIndex].value;