Different ways to hide an HTML Element

There are different ways to hide an HTML element from the client, just hiding not removing.

We need to hide p.hide element, so the user can’t see it.

Display:

Display css property, display is the most important and most used css property to control HTML elements layout.

display:none; can be used to hide an HTML element from the view and it will appear as if it was not there on the page, means the HTML element will be hidden without blocking any space.

Example: Text 1 | Text 2 | Text 3

If we apply display:none; on Text 2, it will be: Text 1 |  | Text 3

So to hide p.hide element using display property:

Visibility:

Visibility property is the CSS property to manage HTML visibility, unlike display which has different values to control the element layout, visibility is used jut for show and hide elements

visibility: hidden can be used to hide an element from the client, but it will keep the element space visible like this: Text 1 |        | Text 3

When to use which? based on requirements and the case you have, you just need to test it on all browsers, and there will be an unrecognizable performance differences between different ways

http://stackoverflow.com/a/11757103/20126

Opacity:

Opacity property is controlling the transparency of the html element, so we can use it to make the element fully transparent and this will hide the element from the client view.

Just make sure to test it on all browsers because on older IE browsers it had some special ways to implement. (hope that no one still using old IE browsers, because the wont see many things any way 🙂 )

And the same as Visibility property, it will hide the element but will keep blocking its space, so the client will see an empty space instead of the element.

Background color and color

While it is rarely used, but we can change the background-color element css property and all child elements to be the same as the background color of the page or the same as container background.

Will need to change the text color as well to make sure that text is not visible as well.

And on some elements we may need to remove borders, that’s why this way is not common to use.

Font size:

We can hide text elements by setting font-size property to 0

Position:

Using the position property and top left we can make the control appear outside the client view.

Clip-Path (Clip):

Last way I want to mention on this post is using clip-path css property

 

 

References:

http://adaptivethemes.com/using-css-clip-as-an-accessible-method-of-hiding-content

https://snook.ca/archives/html_and_css/hiding-content-for-accessibility

http://stackoverflow.com/questions/2928688/how-to-hide-elements-without-having-them-take-space-on-the-page

http://stackoverflow.com/questions/775060/how-to-hide-the-content-of-the-div-in-css

Simplest menu using CSS

Many web designers I met had problems while  creating menus, specially which contains nested sub menus.

In some cases it is a real pain, but in most of cases it is simple, and the problem come when the designer start to implement the simple menu the hard wrong way, it will take ages from him to implement a simple menu while it just need few lines of css code.

Also he may think it can’t be done without javascript and jquery.

Try to think simple while writing your next menu and may be you will need my code as a starting point for a more complex menu.

What I am listing here is a very simple menu, putting in mind that this menu may contain infinite number of submenus.

Lets start with html:

 

 

This html use UL and LI to draw the menu html, you can use divs instead of UL and LI, this will not cause a problem.

The only hint I can point about the previous html code is that the sub menus html are inside the parent menu html.

Such as ‘Sub 1 >>’ is inside the parent ‘Main 1’, this will make our job easier.

Next CSS:

 ul li ul li
{
clear: both;
}

li
{
list-style-type: none;
float: left;
margin: 0 10px;
cursor: pointer;
width:100px;
}

li ul
{
display: none;
padding: 0;
}

li:hover > ul
{
display: block;
}

The most important lines for us are starting from line 15, everything before this is just for making things looks better and formatted better.

As you see it is just 4 lines of code to make the menu functional, the trick exists in line 21, which will show the UL which exists under any LI and the user hovered on it, and the ‘>’ means that we will show just the first level of UL not all nested UL.

Feel free to add more nested submenus and see how simple it is.

Demo