javascript怎麼可以判斷單選複選按鈕是否選中,且傳值

來源:互聯網
上載者:User

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>test</title>
<script type="text/javascript">
function saveRadio(){
    var arr= document.getElementsByName("radio1");
    var v="";
    for(var i=0;i<arr.length;i++){
        if(arr[i].checked) {v = arr[i].value;break;}
    }
    alert(v);
}
function saveCheck(){
    var arr= document.getElementsByName("checkbox1");
    var v="";
    for(var i=0;i<arr.length;i++){
        if(arr[i].checked) v += arr[i].value + ",";
    }
    if(v!="") v = v.substr(0,v.length-1);
    alert(v);
}
</script>
</head>
<body>
<div>
01<input name="radio1" type="radio" value="01" />
02<input name="radio1" type="radio" value="02" />
03<input name="radio1" type="radio" value="03" />
</div>
<div>
<input type="button" value="save" onclick="saveRadio()" />
</div>
<div>
01<input type="checkbox" name="checkbox1" value="01" />
02<input type="checkbox" name="checkbox1" value="02" />
03<input type="checkbox" name="checkbox1" value="03" />
04<input type="checkbox" name="checkbox1" value="04" />
</div>
<div>
<input type="button" value="save" onclick="saveCheck()" />
</div>
</body>
</html>

 注意方法: getElementsByName,arr[i].checked,v.substr

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.