Skip to content

Instantly share code, notes, and snippets.

@wangdu1005

wangdu1005/CookiesSetting

Last active January 21, 2016 09:16
Show Gist options
  • Save wangdu1005/5a8b6fcbe9f83595ac7d to your computer and use it in GitHub Desktop.
Save wangdu1005/5a8b6fcbe9f83595ac7d to your computer and use it in GitHub Desktop.
Download ZIP
How to C.R.U.D. data (JSON) from Cookies by JavaScript
Raw
CookiesSetting
<!DOCTYPE html>
<html>
<head>
<script>
function setCookie(cname,cvalue,exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays*24*60*60*1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
}
function getCookie(cname) {
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1);
if (c.indexOf(name) == 0) {
return c.substring(name.length, c.length);
}
}
return "";
}
function checkCookie() {
var user=getCookie("username");
if (user != "") {
alert("Welcome again " + user);
} else {
user = prompt("Please enter your name:","");
if (user != "" && user != null) {
setCookie("username", user, 30);
}
}
}
function delCookie(cname)//删除cookie
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(cname);
if(cval!=null) document.cookie= cname + "="+cval+";expires="+exp.toGMTString();
}
</script>
</head>
<body onload="checkCookie()">
</body>
</html>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment