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问题:

I am wondering if there is any thing which works like ie conditional comment for webkit.

I want to change width.

For example,

<!--[if IE]>
<link href="css/ie.css" rel="stylesheet" type="text/css" />
<![endif]-->

Thanks in advance.

回答1:

No, there are not.

You can hack it by doing browser detection in JS and attaching scripts/styles dynamically.

Or, if you are concerned only with having different css for different browsers, you can use css hacks. There are probably css hacks that work with the browsers you need.

Or, if the only thing you need to change is 'width' (of one css definition?) you can probably do it in jquery or javascript

jquery browser detection. see: http://docs.jquery.com/Utilities/jQuery.browser

回答2:

I use this on every project: http://rafael.adm.br/css_browser_selector/

Although, if you are having to do a lot of targeting in Firefox or Webkit — you may want to reconsider how you are writing your HTML/CSS.

回答3:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Browsser Detection</title>

<link rel="stylesheet" href="Main.css" type="text/css">

<?php 

$msie        = strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE') ? true : false; 
$firefox    = strpos($_SERVER["HTTP_USER_AGENT"], 'Firefox') ? true : false;
$safari        = strpos($_SERVER["HTTP_USER_AGENT"], 'Safari') ? true : false;
$chrome        = strpos($_SERVER["HTTP_USER_AGENT"], 'Chrome') ? true : false;

if ($msie) {
echo '
<!--[if IE 7]>
<link rel="stylesheet" href="ie7.css" type="text/css">
<![endif]-->
<!--[if IE 8]>
<link rel="stylesheet" href="ie8.css" type="text/css">
<![endif]-->
';
}
if ($safari) {
echo '<link rel="stylesheet" href="safari.css" type="text/css">';
}

?>

</head>
<body>

    <br>
    <?php
    if ($firefox) { //Firefox?
    echo 'you are using Firefox!';
    }

    if ($safari || $chrome) { // Safari?
    echo 'you are using a webkit powered browser';
    }

    if (!$msie) { // Not IE?
    echo '<br>you are not using Internet Explorer<br>';
    }
    if ($msie) { // IE?
    echo '<br>you are using Internet Explorer<br>';
    }
    ?>

    <br>

</body>
</html>

From Chrome conditional comments