How To Change All Links With Javascript

I want to change all links of my site. Suppose a link given by .Example http://www.google.com/ changes to http://www.mysite.com/?redirect=http://www.google.com/ i have my own redir

Solution 1:

var anchors = document.getElementsByTagName("a");

for (var i = 0; i < anchors.length; i++) {
    anchors[i].href = "http://www.mysite.com/?redirect=" + anchors[i].href
}

You can then make the code run on page-load by wrapping it in a function linked to window.onload event:

window.onload = function() {
       /* onload code */
}

Solution 2:

If you use javascript without a framework, you can use the following lines:

var links, i, le;
links = document.getElementsByTagName('a');
for (i = 0, le = links.length; i < le; i++) {
    links[i].href = "http://www.mysite.com/?redirect=" + encodeURIComponent(links[i].href);
}

Solution 3:

$('a').each(function(i, e)
{
    var current = $(this);

    current.attr('href', 'http://www.mysite.com/?redirect=' + encodeURIComponent(current.attr('href')))
});

Solution 4:

Just another version with some checks for local links and .forEach()

var links = [].slice.apply(document.getElementsByTagName("a"));
links.forEach(function(link) {
    var href = link.href;

    if (href.length && href.substring(0, 1) !== "#" && href.substring(0, 1) !== "/") {
        link.href = "http://www.mysite.com/?redirect=" + encodeURIComponent(link.href);
        console.log(link.href);
    }
});