Delete or reset a browser cookie via Javascript

HTML links:

<a href="javascript:del_cookie(name);">Logout</a>

<a href="javascript:delete_cookie(rememberKeepMeLog开发者_JS百科gedIn);">Logout</a>

<a href="javascript:eraseCookie(name);">Logout</a>

<a href="#" onclick="del_cookie(name);">Logout</a>

<a href="#" onclick="delete_cookie(rememberKeepMeLoggedIn);">Logout</a>

<a href="#" onclick="eraseCookie(name);">Logout</a>

Javascript:

function delete_cookie(rememberKeepMeLoggedIn) {

var cookie_date = new Date ( );

cookie_date.setTime ( cookie_date.getTime() - 1 );

document.cookie = rememberKeepMeLoggedIn += "=; expires=" + cookie_date.toGMTString();

}

function del_cookie(name) { document.cookie = 'acceptsCookies=; expires=Thu, 01 Jan 1970 00:00:00 GMT;';

window.location = "http://www.smugmug.com/logout.mg?goTo=#"

}

function eraseCookie(name) { var cookies = document.cookie.split(";");

for (var i = 0; i < cookies.length; i++)

eraseCookies(cookies[i].split("=")[0]);

}

How can I delete or reset a cookie with the name "UP-759283"?

Does the syntax below look good?

Here's my javascript function:

function del_cookie() {

document.cookie = UP-759283 +'=; expires=Thu, 01-Jan-70 00:00:01 GMT;';

}

The HTML URL callout

<a href="javascript:del_cookie(); document.location.reload( );">Logout</a>

Does the syntax below look good?

No; just run your code through JSLint and you'll see. Change

document.cookie = UP-759283 +'=; expires=Thu, 01-Jan-70 00:00:01 GMT;'; 

to

document.cookie = 'UP-759283=; expires=Thu, 01-Jan-70 00:00:01 GMT;'; 

As per the MDC document.cookie docs, cookies are deleted by setting the expiration time to zero:

document.cookie = 'UP-759283=; expires=Thu, 01 Jan 1970 00:00:00 GMT;';

Other reference: cookies @ quirksmode .