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100 lines
3.9 KiB
JavaScript
100 lines
3.9 KiB
JavaScript
/*
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*
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* You need to put the name and values in quotes when you call the function, like this:
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* set_cookie( 'mycookie', 'visited 9 times', 30, '/', '', '' );. Don't forget to put in empty quotes for the unused parameters or
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* you'll get an error when you run the code. This makes the cookie named 'mycookie', with the value of 'visited 9 times', and with
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* a life of 30 days, and the cookie is set to your root folder.
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*
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* The Set_Cookie values for 'domain' and 'secure' are not utilized. Use 'domain' on the Javascript cookie if you are using it on a
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* subdomain, like widgets.yoursite.com, where the cookie is set on the widgets subdomain, but you need it to be accessible over the
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* whole yoursite.com domain.
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*
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* It's good practice to not assume the path to the site root will be set the way you want it by default, so do this manually as a
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* rule, '/'. If no value is set for expires, it will only last as long as the current session of the visitor, and will be automatically
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* deleted when they close their browser.
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*/
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function set_cookie(name, value, expires, path, domain, secure)
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{
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// set time, it's in milliseconds
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var today = new Date();
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today.setTime( today.getTime() );
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/*
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if the expires variable is set, make the correct
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expires time, the current script below will set
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it for x number of days, to make it for hours,
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delete * 24, for minutes, delete * 60 * 24
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*/
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if ( expires )
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{
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expires = expires * 1000 * 60 * 60 * 24;
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}
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var expires_date = new Date( today.getTime() + (expires) );
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document.cookie = name + "=" +escape( value ) +
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( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
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( ( path ) ? ";path=" + path : "" ) +
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( ( domain ) ? ";domain=" + domain : "" ) +
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( ( secure ) ? ";secure" : "" );
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}
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/*
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* This will retrieve the cookie by name, if the cookie does not exist, it will return false, so you can do things like
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* if ( Get_Cookie( 'your_cookie' ) ) do something.
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*/
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function get_cookie(name) {
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var start = document.cookie.indexOf(name + "=");
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var len = start + name.length + 1;
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if ((!start) && (name != document.cookie.substring(0, name.length )))
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{
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return null;
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}
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if (start == -1) return null;
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var end = document.cookie.indexOf(";", len);
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if (end == -1) end = document.cookie.length;
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return unescape(document.cookie.substring(len, end)); //中文时有乱码
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//return decodeURI(document.cookie.substring(len,end));
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}
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function get_cookieCn(name) {
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var start = document.cookie.indexOf(name + "=");
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var len = start + name.length + 1;
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if ((!start) && (name != document.cookie.substring(0, name.length )))
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{
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return null;
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}
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if (start == -1) return null;
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var end = document.cookie.indexOf(";", len);
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if (end == -1) end = document.cookie.length;
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//return unescape(document.cookie.substring(len, end)); //中文时有乱码
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return decodeURI(document.cookie.substring(len,end));
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}
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/*
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* Here all you need to do is put in: Delete_Cookie('cookie name', '/', '') and the cookie will be deleted. Remember to match
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* the cookie name, path, and domain to what you have it in Set_Cookie exactly, or you may get some very hard to diagnose errors.
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*/
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// this deletes the cookie when called
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function Delete_Cookie(name, path, domain) {
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if(Get_Cookie(name)) document.cookie = name + "=" + ((path) ? ";path=" + path : "") + ((domain) ? ";domain=" + domain : "" ) + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
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}
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/*
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* SAMPLE CODE
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*
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* <script type="text/javascript">
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* // remember, these are the possible parameters for Set_Cookie:
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* // name, value, expires, path, domain, secure
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* Set_Cookie( 'test', 'it works', '', '/', '', '' );
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* if ( Get_Cookie( 'test' ) ) alert( Get_Cookie('test'));
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* // and these are the parameters for Delete_Cookie:
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* // name, path, domain
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* // make sure you use the same parameters in Set and Delete Cookie.
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* Delete_Cookie('test', '/', '');
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* ( Get_Cookie( 'test' ) ) ? alert( Get_Cookie('test')) :
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* alert( 'it is gone');
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* </script>
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*/ |