Recent Rotating Post Gadget with Excerpt For Blogger

This Javascript code will display the latest posts of any feed with the distinction of having two parts that can be used individually or combined. At the top this widget will show a single post along with the title (link), author, date and a brief summary of its content. In addition, this post will rotate automatically within a list whose number of elements will be decided by us. At the bottom, we'll find a full list with chosen posts that will change the post above when we mouse over them, thus breaking the automatic cycle.

Before installing anything, let's see it in action to decide if it does what we want.

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How to Add Recent Rotating Posts Widget to Blogger

Step 1. Go to Layout > click on Add a Gadget link.

Step 2. From the pop-up windows, choose the HTML/Javascript gadget

Step 3. Paste this code inside the empty box:

<style>
.gfg-root {
width: 100%;
height : auto;
position : relative;
overflow : hidden;
margin: 0 auto;
text-align : center;
font-size: 12px;
border: 1px solid #DBDBDB;
}
.gfg-title {
font-size: 16px;
font-weight : bold;
color : #6B6B6B;
background:#F3F3F3;
background-repeat: repeat;
line-height : 1.4em;
overflow : hidden;
white-space : nowrap;
padding: 5px;
text-shadow: 0px 2px #fff;
}
.gfg-entry {
background-color: #FFFFFF;
width : 100%;
height : 9.2em;
position : relative;
overflow : hidden;
text-align : left;
margin-top : 3px;
}
.gf-title a {
text-transform: capitalize;
color: #0000ff;
font-size: 14px;
}
.gfg-subtitle {
display: none;
}
.gfg-list {
position : relative;
overflow : hidden;
text-align : left;
}
.gfg-listentry {
line-height : 1.5em;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
padding-left : 15px;
padding-right : 5px;
}
.gfg-listentry-odd {
background-color : #F3F3F3;
border-bottom : 1px dotted #CCCCCC;
padding: 5px;
}
.gfg-listentry-even {
background-color : #F3F3F3;
border-bottom : 1px dotted #CCCCCC;
padding: 5px;
}
.gfg-listentry-odd a{
color: #595959;
padding: 0 0px 0 10px;
}
.gfg-listentry-even a{
color: #242424;
padding: 0 0px 0 10px;
}
.gfg-listentry-highlight {
background: #FFFFFF;
}
.gfg-listentry-highlight:before {
position: absolute;
left: 0;
content: '\25BA ';
font-size: 14px;
color: #DBDBDB;
}
.gfg-listentry-highlight a {
color: #242424;
}
.gfg-root .gfg-entry .gf-result {
position : relative;
background-color: #ffffff;
width : auto;
height : 100%;
padding-left : 20px;
padding-right : 5px;
}
.gfg-root .gfg-entry .gf-result .gf-title {
font-size: 14px;
line-height : 1.2em;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
margin-bottom : 2px;
margin-top: 5px;
}
.gfg-root .gfg-entry .gf-result .gf-snippet {
height : 3.8em;
color: #000000;
margin-top : 3px;
}
.clearFloat {
clear : both;}</style>
<script src="http://www.google.com/jsapi" type="text/javascript"></script><script src="http://www.google.com/uds/solutions/dynamicfeed/gfdynamicfeedcontrol.js" type="text/javascript"></script>
<script type="text/javascript">
function showGadget() {var feeds = [{title:'List',url:'http://bloggerchive.blogspot.com/feeds/posts/default?redirect=false&start-index=1&max-results=10'},];
new GFdynamicFeedControl(feeds, 'feedGadget',{title: 'Latest Posts', numResults : 10, displayTime : 5000, hoverTime : 500});} google.load("feeds", "1");
google.setOnLoadCallback(showGadget);
</script>
<div id="feedGadget">Loading...</div>

Customizations:

The url in blue is the feed address. Obviously, the http://bloggerchive.blogspot.com address should be replaced with yours.

Next is start-index=1. This number indicates which post will appear first on the list. By default it is the latest post published on our blog, so if we want to begin displaying older posts, we need to change the 1 value.

max-results=10 indicates the maximum number of posts that we will be reading from the feed, beginning from the one that we have set up before in the start-index=1. This number always needs to be equal or greater to what we should see later and its purpose is to set the number of posts that will be shown in the gadget. The easy thing would be to put 500 in order not to fail, but the higher the number is, the longer the gadget will take to load, so it's better to adjust to what we need to show.

Finally here are some other parameters of the script:

title: 'Latest Posts', is the widget's title that appears on top.
numResults: 10, number of posts that will show in the list
displayTime: 5000, the delay time between posts in the rotator (in milliseconds)
hoverTime: 500, minimum time for an item in the list to be displayed at the top.

If you want to hide the list and show only the posts, then change this part:

.gfg-list {
position : relative;
overflow : hidden;
text-align : left;
}

 to :

.gfg-list {
display:none;
}

and if you want to display only the list, then change this part:

.gfg-entry {
background-color: #FFFFFF;
width : 100%;
height : 9.2em;
position : relative;
overflow : hidden;
text-align : left;
margin-top : 3px;
}

to:

.gfg-entry {
display: none; }

Step 4. Save the gadget and you're done. Enjoy!