Boilerplate CSS Media Queries

Media Queries are now becoming quite common practice in web design. They allow you to change the CSS of the different elements on your web page depending on the size of the screen the visitor currently can see.

Below is a media query boilerplate you can use to change the design of your depending on if the user is using an iPad,iPhone or other smart phones. This snippet even allows you to change the design if the device is landscape or portrait.

/* Smartphones (portrait and landscape) ———– */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px) {
/* Styles */
}

/* Smartphones (landscape) ———– */
@media only screen
and (min-width : 321px) {
/* Styles */
}

/* Smartphones (portrait) ———– */
@media only screen
and (max-width : 320px) {
/* Styles */
}

/* iPads (portrait and landscape) ———– */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px) {
/* Styles */
}

/* iPads (landscape) ———– */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) ———– */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : portrait) {
/* Styles */
}

/* Desktops and laptops ———– */
@media only screen
and (min-width : 1224px) {
/* Styles */
}

/* Large screens ———– */
@media only screen
and (min-width : 1824px) {
/* Styles */
}

/* iPhone 4 ———– */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
/* Styles */
}

JSON Object with integer values as key attributes

Using JSON object selection to paint the output based on descending key values.

JSON Object:

var popularObj= {
“89”:”animation”,
“71”:”apple”,
“64”:”barbara beery”,
“48”:”video”,
“39”:”cheese sticks”,
“29”:”games”,
“28”:”bbq pork sticks”,
“27”:”asian chicken tenders”,
“25”:”bake”,
“24”:”banana”
};

Problem:
The requirement was to paint only the values in descending order as they are the popular searches within the website. Whether we use for in loop or jquery each construct which does the same thing if the variable is an object, our results were varying across browsers namely Google chrome. The reason being in chrome, the key values were seen as array index instead of object key properties. The key values here were treated as indexes (integer indexes) and were painted in reverse order.

In Firefox and IE, we will get

“animation apple barbara beery video cheese sticks games bbq pork sticks asian chicken tenders bake banana”

and in chrome

“banana bake asian chicken tenders bbq pork sticks games cheese sticks video barbara beery apple animation”

Solution:
Convert the object into array, reverse it for chrome browser and then the finally load the dom object.

Note: In case the key was a text then the order of rendering is same across the browsers.

jQuery .on() and .off () Methods

New Event API

The new .on() and .off() methods provides ways of attaching and removing event handlers to the currently selected set of elements in the jQuery object. $(el).on () gives the developers an unified way of binding events for any event types, direct and delegated events. It also allows you to bind more than one events at the same time by passing an object .

Syntax:
$(elements).on(events [, selector] [, data] , handler);
$(elements).off([ events ] [, selector] [, handler]);

// An example of binding a click event in before version 1.7 and version 1.7 is illustrated below:
$(“a#vikas”).click(Handler); // Click event before jQuery 1.7
$(“a#vikas”).bind(“click”, Handler); // Binding click event before jQuery 1.7
$(“a#vikas”).on(“click”, Handler); // Click event in jQuery 1.7

// Similar example for .delegate() and .undelegate() methods is shown below:
$(‘.container’).delegate(‘a.vikas, ‘click’, Handler);
$(‘.container’).undelegate(‘a.vikas, ‘click’, Handler);

//Above code can be replaced by the following code in the version 1.7
$(‘.container’).on(‘click’, ‘a.vikas, Handler);
$(‘.container’).off(‘click’, ‘a.vikas, Handler);

Reference:
http://api.jquery.com/on
http://api.jquery.com/off

HTML5 Reset Stylesheet

html, body, div, span, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
del, dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, figcaption, figure,
footer, header, hgroup, menu, nav, section, summary,
time, mark, audio, video {
margin:0;
padding:0;
border:0;
outline:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
}

body {
line-height:1;
}

article,aside,details,figcaption,figure,
footer,header,hgroup,menu,nav,section {
display:block;
}

nav ul {
list-style:none;
}

blockquote, q {
quotes:none;
}

blockquote:before, blockquote:after,
q:before, q:after {
content:”;
content:none;
}

a {
margin:0;
padding:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
}

/* change colours to suit your needs */
ins {
background-color:#ff9;
color:#000;
text-decoration:none;
}

/* change colours to suit your needs */
mark {
background-color:#ff9;
color:#000;
font-style:italic;
font-weight:bold;
}

del {
text-decoration: line-through;
}

abbr[title], dfn[title] {
border-bottom:1px dotted;
cursor:help;
}

table {
border-collapse:collapse;
border-spacing:0;
}

/* change border colour to suit your needs */
hr {
display:block;
height:1px;
border:0;
border-top:1px solid #cccccc;
margin:1em 0;
padding:0;
}

input, select {
vertical-align:middle;
}

Reference: http://code.google.com/p/html5resetcss/downloads/list

How to add icons using CSS Attribute Selector?

CSS Attribute Selector
CSS Attribute selectors are very powerful giving you many options to control styles of different elements e.g. you can add an icon based on the href attribute of the a tag to let the user know whether link points to an image, pdf, doc file etc.

Supported Browsers
IE7/IE8/IE9/Mozilla/Safari/Opera/Chrome.

CSS Code
a[href$=’doc’]
{
padding:5px 0 5px 30px;
background:url(doc_icon.png) no-repeat left center;
font:normal 14px arial;
line-height:32px;
}

HTML Code
<a href=”example.doc”>Doc File</a>