JS确认，错误，返回，不起作用

Question

this current piece of script to confirm whether a user wants to log out is not fully working in Safari on Mac.

function log_out()
{
    ht = document.getElementsByTagName("html");
    ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
    if (confirm('Are you sure you want to log out?'))
    {

        return true;
    }
    else
    {
        ht[0].style.filter = "";
                return false;
    }
}

It works when the user confirm they want to logout, Ok, but when the user clicks cancel, they are still logged out.

Any ideas?

Thanks in advance!

Answer 1

将返回指令放在log_out调用之前

<a class="rnavtab" href="?do=logout" onclick="return log_out()">Log out</a>

Answer 2

Ok, but when the user clicks cancel, they are still logged out.

After seeing your code in the comment you posted:

<a class="rnavtab" href="?do=logout" onclick="log_out()">Log out</a>

The ?do=logout is triggered irrspective of whether a user confirms or not. Try putting a hash instead:

<a class="rnavtab" href="#" onclick="log_out()">Log out</a>

You can later on redirect user like this:

window.location = '?do=logout';