Select选中项

方法一:

html源码：

<select name="select" οnchange="changeSelectB()">
	<option value="aaa">1</option>
	<option value="bbb">2</option>
	<option value="ccc">3</option>
	<option value="ddd">4</option>
</select>


js源码:      

function changeSelectB() { 
	//取得选中项的值或者编号,不传this时候写法
	var select = document.getElementById("select");
	var vA = select.options[select.selectedIndex].value;
	var vB = select.options[select.selectedIndex].text;           
	alert(vA);
	alert(vB);
}

方法二:

html源码：

<select name="select" οnchange="changSelect(this)">
	<option value="aaa">1</option>
	<option value="bbb">2</option>
	<option value="ccc">3</option>
	<option value="ddd">4</option>
</select>

js源码：



function changSelect(choose) {
	//取得选中项的值或者编号,传this时候写法
	var aa = choose.options[choose.selectedIndex].text;
	var bb = choose.options[choose.selectedIndex].value;
	alert(aa);
	alert(bb);
}