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分享如何用Cookie记住用户对单选按钮(type="radio")的选择?
如何用Cookie记住用户对单选按钮(type="radio")的选择?
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weidegong 2002-04-21
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<html>
<head>
<title></title>
</head>
<SCRIPT LANGUAGE="JavaScript">
<!--
function save()
{
var tmpelm = document.forms[0].gender;
for (var i=0;i<tmpelm.length;i++)
if (tmpelm[i].checked)
document.cookie = "gender="+i;
}
function load(){
var i=GetCookie("gender");
alert(i);
var tmp=document.forms[0].gender[i];
tmp.checked=true;
}
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
//-->
</SCRIPT>
<body>
<form>
<input type=radio name=gender value="男">男</input>
<input type=radio name=gender value="女">女</input>
</form>
<button onclick="save()">save to cookie</button><BR>
<button onclick="load()">load the cookie</button>
</body>
</html>
<head>
<title></title>
</head>
<SCRIPT LANGUAGE="JavaScript">
<!--
function save()
{
var tmpelm = document.forms[0].gender;
for (var i=0;i<tmpelm.length;i++)
if (tmpelm[i].checked)
document.cookie = "gender="+i;
}
function load(){
var i=GetCookie("gender");
alert(i);
var tmp=document.forms[0].gender[i];
tmp.checked=true;
}
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
//-->
</SCRIPT>
<body>
<form>
<input type=radio name=gender value="男">男</input>
<input type=radio name=gender value="女">女</input>
</form>
<button onclick="save()">save to cookie</button><BR>
<button onclick="load()">load the cookie</button>
</body>
</html>
emu 2002-04-21
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忘了写打印了，你可以自己把document.cookie打出来看。
emu 2002-04-21
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<html>
<head>
<title></title>
</head>
<SCRIPT LANGUAGE="JavaScript">
<!--
function save()
{
var tmpelm = document.forms[0].gender;
for (var i=0;i<tmpelm.length;i++)
if (tmpelm[i].checked)
document.cookie = "gender="+tmpelm[i].value;
}
//-->
</SCRIPT>
<body>
<form>
<input type=radio name=gender value="男">男</input>
<input type=radio name=gender value="女">女</input>
</form>
<button onclick="save()">save to cookie</button><BR>
</body>
</html>
<head>
<title></title>
</head>
<SCRIPT LANGUAGE="JavaScript">
<!--
function save()
{
var tmpelm = document.forms[0].gender;
for (var i=0;i<tmpelm.length;i++)
if (tmpelm[i].checked)
document.cookie = "gender="+tmpelm[i].value;
}
//-->
</SCRIPT>
<body>
<form>
<input type=radio name=gender value="男">男</input>
<input type=radio name=gender value="女">女</input>
</form>
<button onclick="save()">save to cookie</button><BR>
</body>
</html>
