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Return string without trailing slash

I have two variables:

site1 = "www.somesite.com";
site2 = "www.somesite.com/";

I want to do something like this

function someFunction(site)
{
    // If the var has a trailing slash (like site2),
    // remove it and return the site without the trailing slash
    return no_trailing_slash_url;
}

How do I do this?

Answer

Try this:

function someFunction(site)
{
    return site.replace(//$/, "");
}