With HTML5 video element, you can easily make it elastic by using the max-width:100% trick (see elastic HTML5 video demo). As mentioned in the introduction, this trick doesn't work if the embed code uses iframe or object tag which is commonly used by most video sharing sites such as YouTube and Vimeo.
The trick is very simple. You need to wrap the embed code with a <div> container and specify 50% to 60% padding bottom. Then specify the child elements (iframe, object embed) 100% width, 100% height, with absolute position. This will force the embed elements to expand fullwidth automatically.
To restrict the width of the video, an additional <div> wrapper is required. Wrap the video with another <div> tag and specify a fixed width value with max-width:100%.
Before we had the placeholder attribute, we relied on Javascript to fake the placeholder text. Below is an example. The text is inserted in the value attribute. On focus, it checks if the value is "search" and returns empty to clear the field. If the value is empty, it returns "search." As you can see, this way is not an efficient way because each field has to be checked.
Now with HTML5 placeholder, it is more semantic to use placeholder than value attribute. However, placeholder text is not supported by all browsers. To make it cross-browser, Modernizr and jQuery come in handy here.
Modernizr is used here to check if placeholder is supported. If placeholder is not supported, the jQuery code will run. It finds all elements with placeholder attribute and stores in a variable. It then compares the input value with the placeholder attribute. If the input value is empty, it will display the placeholder text and add a "placeholder" class to the input field. View Demo.
To use this on your site, download a copy of Modernizr and jQuery and paste the following code any where in your html page (be sure the jquery.js and modernizr.js file is in correct path).
<script src="jquery.js"></script>
<script src="modernizr.js"></script>
<script>
$(document).ready(function(){
if(!Modernizr.input.placeholder){
$('[placeholder]').focus(function() {
var input = $(this);
if (input.val() == input.attr('placeholder')) {
input.val('');
input.removeClass('placeholder');
}
}).blur(function() {
var input = $(this);
if (input.val() == '' || input.val() == input.attr('placeholder')) {
input.addClass('placeholder');
input.val(input.attr('placeholder'));
}
}).blur();
$('[placeholder]').parents('form').submit(function() {
$(this).find('[placeholder]').each(function() {
var input = $(this);
if (input.val() == input.attr('placeholder')) {
input.val('');
}
})
});
}
</script>
Remove Webkit Search Input Styles
Webkit browsers add extra styling to the search input field. To remove them, add the following CSS code:
This demo is intented to show you how to make a grayscale/color image hover effect with HTML5 and jQuery. To achieve this effect before HTML5, two images are required: a color and a grayscale version. Now HTML 5 made it easier and faster because the grayscale image is generated from the original source. I hope you will find this script useful in your design such as portfolio showcase, photo gallery, etc.
jQuery Code
The jQuery code below will look for the target images and generate a grayscale version. When hovering the image, it will fade the grayscale image into color.
<script src="jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
// On window load. This waits until images have loaded which is essential
$(window).load(function(){
// Fade in images so there isn't a color "pop" document load and then on window load
$(".item img").fadeIn(500);
// clone image
$('.item img').each(function(){
var el = $(this);
el.css({"position":"absolute"}).wrap("<div class='img_wrapper' style='display: inline-block'>").clone().addClass('img_grayscale').css({"position":"absolute","z-index":"998","opacity":"0"}).insertBefore(el).queue(function(){
var el = $(this);
el.parent().css({"width":this.width,"height":this.height});
el.dequeue();
});
this.src = grayscale(this.src);
});
// Fade image
$('.item img').mouseover(function(){
$(this).parent().find('img:first').stop().animate({opacity:1}, 1000);
})
$('.img_grayscale').mouseout(function(){
$(this).stop().animate({opacity:0}, 1000);
});
});
// Grayscale w canvas method
function grayscale(src){
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var imgObj = new Image();
imgObj.src = src;
canvas.width = imgObj.width;
canvas.height = imgObj.height;
ctx.drawImage(imgObj, 0, 0);
var imgPixels = ctx.getImageData(0, 0, canvas.width, canvas.height);
for(var y = 0; y < imgPixels.height; y++){
for(var x = 0; x < imgPixels.width; x++){
var i = (y * 4) * imgPixels.width + x * 4;
var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
imgPixels.data[i] = avg;
imgPixels.data[i + 1] = avg;
imgPixels.data[i + 2] = avg;
}
}
ctx.putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
return canvas.toDataURL();
}
</script>
How to use it
To apply this to your site:
include a copy of jquery.js
paste the code as shown above
set the target image (eg: .post-img, img, .gallery img, etc.)
you may change the animation speed (ie. 1000 = 1 second)
Compatibility
It works with any browser that support HTML5 and Javascript such as Chrome, Safari, and Firefox. If HTML5 is not supported, it will fallback to original color image. Note: if it doesn't work with Firefox and Chrome locally. You need to put the HTML file on a web server.
Take a look at the demo and note that there is border-radius and inset box-shadow applied in the first row of images. Firefox does render border-radius on image element, but doesn't render the inset box-shadow. Chrome or Safari doesn't render the border-radius and inset box-shadow at all.
Workaround
To get the border-radius and inset box-shadow working, the workaround is to apply the actual image as background-image.
Dynamic Way
To make it dynamic, you can use to jQuery to wrap the background image dynamically for every image element. The jQuery code below will wrap all images with a span tag and apply the image source as the background image (jQuery code by Darcy Clarke).
Now that the image is applied as a background image, you can pretty much add any style to it. Below is a simple circle image created with border-radius. If you are not familiar with CSS3, read my tutorial on the Basics of CSS3.
In this example, I added transition to the image wrap element. On mouse over, it will morph from rounded corners to circle and add a glowing effect. The glowing effect is done with multiple box-shadow values.
CSS
.morphing-glowing .image-wrap {
-webkit-transition: 1s;
-moz-transition: 1s;
transition: 1s;
-webkit-border-radius: 20px;
-moz-border-radius: 20px;
border-radius: 20px;
}
.morphing-glowing .image-wrap:hover {
-webkit-box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
-moz-box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
-webkit-border-radius: 60em;
-moz-border-radius: 60em;
border-radius: 60em;
}
This trick pretty much work on any browser (eg. Chrome, Firefox and Safari) that supports border-radius, box-shadow, :before and :after. The unsupported browsers will fall back to the image without any styles.
You can specify either normal or break-word value with the word-wrap property. Normal means the text will extend the boundaries of the box. Break-word means the text will wrap to next line.
