I'm working with a CMS, which prevents editing HTML source for <head> element.
For example I want to add the following above the <title> tag:
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
This question is related to
javascript
jquery
css
xhtml
In the latest browsers (IE9+) you can also use document.head:
Example:
var favicon = document.createElement('link');
favicon.id = 'myFavicon';
favicon.rel = 'shortcut icon';
favicon.href = 'http://www.test.com/my-favicon.ico';
document.head.appendChild(favicon);
jQuery
$('head').append( ... );
JavaScript:
document.getElementsByTagName('head')[0].appendChild( ... );
JavaScript:
document.getElementsByTagName('head')[0].appendChild( ... );
Make DOM element like so:
link=document.createElement('link');
link.href='href';
link.rel='rel';
document.getElementsByTagName('head')[0].appendChild(link);
With jquery you have other option:
$('head').html($('head').html() + '...');
anyway it is working. JavaScript option others said, thats correct too.
Try a javascript pure:
Library JS:
appendHtml = function(element, html) {
var div = document.createElement('div');
div.innerHTML = html;
while (div.children.length > 0) {
element.appendChild(div.children[0]);
}
}
Type:
appendHtml(document.head, '<link rel="stylesheet" type="text/css" href="http://example.com/example.css"/>');
or jQuery:
$('head').append($('<link rel="stylesheet" type="text/css" />').attr('href', 'http://example.com/example.css'));
Create a temporary element (e. g. DIV), assign your HTML code to its innerHTML property, and then append its child nodes to the HEAD element one by one. For example, like this:
var temp = document.createElement('div');
temp.innerHTML = '<link rel="stylesheet" href="example.css" />'
+ '<script src="foobar.js"><\/script> ';
var head = document.head;
while (temp.firstChild) {
head.appendChild(temp.firstChild);
}
Compared with rewriting entire HEAD contents via its innerHTML, this wouldn’t affect existing child elements of the HEAD element in any way.
Note that scripts inserted this way are apparently not executed automatically, while styles are applied successfully. So if you need scripts to be executed, you should load JS files using Ajax and then execute their contents using eval().
You can use innerHTML to just concat the extra field string;
document.head.innerHTML = document.head.innerHTML + '<link rel="stylesheet>...'
However, you can't guarantee that the extra things you add to the head will be recognised by the browser after the first load, and it's possible you will get a FOUC (flash of unstyled content) as the extra stylesheets are loaded.
I haven't looked at the API in years, but you could also use document.write, which is what was designed for this sort of action. However, this would require you to block the page from rendering until your initial AJAX request has completed.
Source: Stackoverflow.com