Can the order in which adding link and meta tags on head of a webpage have any adverse effect?

问题

I have added this code to my webpage with .php extension

<?php include_once("cssheadertop.php")?>
<link rel="stylesheet" href="button.css">
<?php include_once("cssheaderbottom.php")?>

Now, cssheadertop.php contains the following code

<head>
<meta charset="utf-8">
<title>8mags - CSS Lessons</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../../bootstrap.min.css" media="screen">
<link rel="stylesheet" href="../../style.css">
<link href='http://fonts.googleapis.com/css?family=Roboto+Condensed' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Coda' rel='stylesheet' type='text/css'>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

The cssheaderbottom.php file has following code

  <style>
  page specific style here.
  </style>
  </head>

I want to add meta description and meta keywords tag between

 <?php include_once("cssheadertop.php")?>

and

 <?php include_once("cssheaderbottom.php")?>

just like the link tag I have added.

Can it pose any problem in rendering or SEO?

回答1:

Apart from a few exceptions, the order of childs in the head element doesn’t matter.

That said, consumers like search engines may of course do what they want (e.g., ignoring every third element, just for the fun of it), but discussing the possible behaviour of undesignated consumers is off-topic here.

The exceptions:

meta-charset should ideally be the first child (i.e., the element must be within the first 1024 bytes of the document, and at best before any non-ASCII characters)
base should ideally be the second child (i.e., it must come before any other element in head that has a URI as attribute value)
those link and script elements that the user agents wants to process are by default processed in the order they appear
the order of link-stylesheet and style elements can play a role for applying CSS
the first link-alternate with a type of application/rss+xml or application/atom+xml is the "the default syndication feed for the purposes of feed autodiscovery"

来源：https://stackoverflow.com/questions/27576959/can-the-order-in-which-adding-link-and-meta-tags-on-head-of-a-webpage-have-any-a

标签

php

html

meta-tags