How to add &ref=123 every link

How would i be able to put the follow on the end of every link of my website with out editing every link?

e.g www.WebsiteName.com/?ref=123

so if i went to www.WebsiteName.com/aboutus.php i want it to add ?ref=123开发者_开发技巧 onto the end of the url.

---

var has_querystring = /\?/;

$("a[href]").
    each(function(el) {
        if ( el.href && has_querystring.test(el.href) ) {
            el.href += "&ref=123";
        } else {
            el.href += "?ref=123";
        }
    });

---

Depends on what you mean by without editing every link.

If you mean that you just don't want to manually add it in your source, you could do this:

$('a[href]').attr('href', function(i, hrf) { return hrf + '?ref=123';});

Or if you meant that you didn't want to have to do that, you could attach a .click() handler that will add the value when the link is clicked.

$('a[href]').click(function( e ) {
    e.preventDefault();
    window.location = this.href + '?ref=123';
});

---

I would use a RewriteRule. It's the easiest and most reliable way in my opinion. That is to say not parsing the page with PHP or fighting DOM load issues with JavaScript

Here's an example:

# For blank query only
RewriteCond %{QUERY_STRING} ^$
RewriteRule ^(.*)\.php$ /$1.php?ref=123 [L]

# Append to existing query
RewriteCond %{REQUEST_URI} \.php$
RewriteRule ^(.*)$ /$1&ref=123 [QSA,L]

---

$('a[href]').attr("href", function(){
    this.href + '?ref=123';
});

Would be a very simple method. You'd probably have to add some error checking to make sure you're not ruining any other parameters, etc.