js获得表单表单项的值

select

function test(){
	
	var test=document.getElementById("test");
	var value=test.options[test.selectedIndex].value;
	var text=test.options[test.selectedIndex].text;
	alert("----value-----"+value+"---text---"+text);
	
	
}

select
<select id="test">
	<option value="1">select1</option>
	<option value="2">select2</option>
	<option value="3">select3</option>
	<option value="4">select4</option>
</select>
<input type="button" value="测试"  onclick="test()">