标题：[推荐]常见表单选择控件的选中内容读取方法
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获取单选列表框的选中内容
<html>
<head>
<meta charset="UTF-8">
<title>Form validation</title>
<script type="text/JavaScript">
function display(form) {
var myselect = document.getElementById("selCards");
var index = myselect.selectedIndex;
alert(myselect.options[index].text);
}
</script>
</head>
<body>
<form name="frmCards" action="cards.asp" method="get" >
<select name="selCards" id="selCards" size="6">
<option>选择你的发牌花色</option>
<option value="hearts">红桃</option>
<option value="diamonds">方块</option>
<option value="spades">黑桃</option>
<option value="clubs">梅花</option>
</select>
<input type="submit" value="显示"/>
</form>
</body>
</html>
获取单选列表框的多选内容
<html>
<head>
<meta charset="UTF-8">
<title>Form validation</title>
<script type="text/JavaScript">
function display(form) {
var myselect = document.getElementById("selCards");
var len = myselect.options.length;
var result = "";
var opt;
for (var i = 0; i < len; i++) {
opt = myselect.options[i];
if (opt.selected)
result = result + opt.text + ";";
}
alert(result);
}
</script>
</head>
<body>
<form name="frmCards" action="cards.asp" method="get" >
<select name="selCards" id="selCards" size="6" multiple="multiple">
<option>选择你的发牌花色</option>
<option value="hearts">红桃</option>
<option value="diamonds">方块</option>
<option value="spades">黑桃</option>
<option value="clubs">梅花</option>
</select>
<input type="submit" value="显示"/>
</form>
</body>
</html>
获取选中的单选按钮内容
<html>
<head>
<meta charset="UTF-8">
<title>Form validation</title>
<script type="text/JavaScript">
function display(form) {
var radioButtons = form.radSuit;
for (var i = 0; i < radioButtons.length; i++) {
if (radioButtons[i].checked) {
alert(radioButtons[i].nextSibling.nodeValue);
break;
}
}
}
</script>
</head>
<body>
<form name="frmCards" action="cards.aspx" method="post"
>
<p>选择你的发牌花色</p>
<p><input type="radio" name="radSuit" value="hearts"/> 红桃 </p>
<p><input type="radio" name="radSuit" value="diamonds"/> 方块 </p>
<p><input type="radio" name="radSuit" value="spades"/> 黑桃 </p>
<p><input type="radio" name="radSuit" value="clubs"/> 梅花 </p>
<p><input type="submit" value="提交"/></p>
</form>
</body>
</html>
获取选中的复选按钮内容
<html>
<head>
<meta charset="UTF-8">
<title>Form validation</title>
<script type="text/JavaScript">
function display(field) {
var result = "";
for (var i = 0; i < field.length; i++) {
if (field[i].checked)
result = result + field[i].nextSibling.nodeValue + ";"
}
alert(result);
}
</script>
</head>
<body>
<form name="frmCards" action="cards.aspx" method="post" >
<p>选择你的发牌花色</p>
<p><input type="checkbox" name="chkSuit" value="hearts"/> 黑桃 </p>
<p><input type="checkbox" name="chkSuit" value="diamonds"/> 方块 </p>
<p><input type="checkbox" name="chkSuit" value="spades"/> 黑桃 </p>
<p><input type="checkbox" name="chkSuit" value="clubs"/> 梅花 </p>
<p><input type="submit" value="提交"/></p>
</form>
</body>
</html>