Load CSS stylesheet depending on Internet Explorer document mode

As I work on my website, I am facing the challenge of incorporating different versions of my style sheet based on the browser's document mode, not the browser mode.

For instance, if the documentmode = ie8, I may need to load main_ie8.css, whereas for documentmode = ie9, I might need to load main_ie9.css

A significant number of my users utilize IE9 in compatibility mode, which defaults the document mode to standards equivalent to those of ie7. To ensure the document mode is set to IE9 standards in IE9, I rely on the following meta tag:

<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

The issue arises when the browser mode remains locked at IE compatibility, keeping the user agent as IE7.

Given that server-side methods cannot determine the running document mode and conditional comments are designed around the browser mode, how can I effectively load my CSS files based on the document mode rather than the browser mode.

Answer №1

Discovering the browser and document mode using this code:

var j = jQuery.noConflict();
j(document).ready(function(){
    /* Checking for IE Developer Tools usage with different Mode for Browser and Document */
    if(j.browser.msie) {
        var browserVersion = j.browser.version.slice(0,j.browser.version.indexOf("."));
        var documentVersion = document.documentMode;
        }
    }
});

Sending an ajax 'get' call to a sample.php script:

            if (window.XMLHttpRequest)
            {
              xmlhttp=new XMLHttpRequest();
            }
            else
            {
              xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
            }
            xmlhttp.onreadystatechange=function()
            {
              if (xmlhttp.readyState==4 && xmlhttp.status==200)
                {
                    //perform settings based on php response
                    /*echo the css file name to be chosen based on  
browser mode or document mode*/
                        var response=xmlhttp.responseText;
                    }
                }


xmlhttp.open("GET","http://<?php echo IP; ?>/yourapp/sample.php?mode="+,true);
            xmlhttp.send();

Wishing you success with this solution!

Answer №2

To address compatibility issues with CSS styling in older versions of Internet Explorer, consider implementing a conditional JavaScript that checks the document mode before appending the necessary CSS styles. Here is an example:

if (BrowserDetect.browser == 'Explorer')
{
    if (document.documentMode == 7 && BrowserDetect.version > 7)
    {
        // Apply special CSS for users running IE in compatibility mode
    }
}

You can find a solution similar to this one in a different post on Stack Overflow.

If your issue primarily concerns browser support for CSS3, you may want to consider using shims and polyfills to enable modern CSS features in older versions of IE. The HTML5 Shiv is a popular choice for addressing this.

For a comprehensive list of polyfills that can help resolve specific browser compatibility challenges, check out this collection.

Answer №3

One way to address browser compatibility issues is through the use of conditional comments

<p class="accent">
<!--[if IE]>
This content will be displayed only in Internet Explorer<br />
<![endif]-->
<!--[if IE 6]>
This content will be displayed only in Internet Explorer 6<br />
<![endif]-->
<!--[if IE 7]>
This content will be displayed only in Internet Explorer 7<br />
<![endif]-->
<!--[if IE 8]>
This content will be displayed only in Internet Explorer 8<br />
<![endif]-->
<!--[if IE 9]>
This content will be displayed only in Internet Explorer 9<br />
<![endif]-->
<!--[if gte IE 8]>
This content will be displayed in Internet Explorer 8 or higher<br />
<![endif]-->
<!--[if lt IE 9]>
This content will be displayed in Internet Explorer versions lower than 9<br />
<![endif]-->
<!--[if lte IE 7]>
This content will be displayed in Internet Explorer versions lower than or equal to 7<br />
<![endif]-->
<!--[if gt IE 6]>
This content will be displayed in Internet Explorer versions greater than 6<br />
<![endif]-->
<!--[if !IE]> -->
This content will not be displayed in Internet Explorer versions 5-9<br />
<!-- <![endif]-->
</p>

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