Javascript Cookie read, write, delete operation functions_javascript skills

复制代码 代码如下:

function getCookie( name )
{
var start = document.cookie.indexOf( name "=" );
var len = start name.length 1;
if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
return null;
}
if ( start == -1 ) return null;
var end = document.cookie.indexOf( ';', len );
if ( end == -1 ) end = document.cookie.length;
return unescape( document.cookie.substring( len, end ) );
}

// ---------------------------------------------------- //
function setCookie( name, value, expires, path, domain, secure ) {
var today = new Date();
today.setTime( today.getTime() );
if ( expires ) {
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() (expires) );
document.cookie = name '=' escape( value )
( ( expires ) ? ';expires=' expires_date.toGMTString() : '' ) //expires.toGMTString()
( ( path ) ? ';path=' path : '' )
( ( domain ) ? ';domain=' domain : '' )
( ( secure ) ? ';secure' : '' );
}

// ---------------------------------------------------- //
function deleteCookie( name, path, domain )
{
if ( getCookie( name ) ) document.cookie = name '='
( ( path ) ? ';path=' path : '')
( ( domain ) ? ';domain=' domain : '' )
';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}