Tag: css

Adding CSS To Header

I am currently working on a website that sources in a header and footer — not an uncommon thing to do as this ensures a consistent look across the site. The lead-in code starts head, closes head, starts body, and defines the common page elements (nav bar, etc). The footer then defines some more common page elements and closes body. This approach creates a problem when you want to add CSS. Now you could use style tags within the HTML, but I would rather not have the same style definition twenty times. Yeah, I’d make a single variable out of it and print the style-definition-variable twenty times … but I’d rather have my CSS sourced in from a style-sheet file.

Since I’m already using jQuery to dynamically append elements — add table rows as data is pulled back from the server — I wondered if you could append something to the header. Yes, you can!

* This function appends a CSS file to the document head
* @param {string} strFileName Path to CSS file
* @return n/a
* @example
* loadCSSStylesheetToHead('/path/to/file.css')
function loadCSSStylesheetToHead(strFileName){
var file = document.createElement("link");
file.setAttribute("rel", "stylesheet");
file.setAttribute("type", "text/css");
file.setAttribute("href", strFileName);

This allows me to after-the-fact add css from a style-sheet file into the document head.

Displaying An Image Tooltip

JQuery developers seem to have put a lot of effort into filtering HTML components out of tooltips … which, as someone who visits a website … is A Good Thing. But what’s a good security consideration can be a massive pain when building a website. I have a form which takes an internal ID number, and I have an image showing people how to find that internal ID number. I want a little question mark after the field name that pops up the image as a tooltip on mouseover events. And clears the image on mouseout.


// Show finding equipment ID image "tooltip" 
        	$('#FindingEID').css({ "display": "block" });
        	$('#FindingEID').css({ "display": "none" });
<div class="col-md-2 col-sm-2 col-lg-2 col-xs-2 text-left">
	<span><strong>Equipment ID(s): <a id="ShowEquipmentIDTip" href="#">(?)</a></strong></span>
	<div id="FindingEID" style="position: relative;top: 20;left: 60;width: 100%;height: 100%;z-index:99;display:none"><img src="/groomsGenerateCircuitReport/images/Tip-FindingEquipmentID.png" /></div>

Moving your mouse over the ShowEquipmentIDTip a element displays the div which contains my image “tooltip” and moving the mouse away sets the display back to none.