Blogfreakz - Web Design and Web Development resources » Ajax

How To Add A “Load More Posts” Button In WordPress

Keith@Blogfreakz — Tue, 10 Apr 2012 10:17:01 +0000

Today’s featured WordPress tutorial comes from Michael Martin and it’s about replacing the “Older Posts” link on your blog with a button that extends the length of the current web page instead of reloading it; it is similar to how you view older tweets on Twitter.

A partial screenshot of the button

You can check it out on the demo here.

In Michael’s tutorial, you’ll be using AJAX to create the plugin which will have the following features:

Multiple clicks – First clicks will load page 2?s posts, second will load page 3 etc.)
Check for posts first – If there are no more posts that can be loaded, we’ll tell the user.
Degrade gracefully – If a visitor doesn’t use JavaScript, we won’t change the site at all.

Below is a snippet taken from the javascript that makes the AJAX call:

$('.pbd-alp-placeholder-'+ pageNum).load(nextLink + ' .post',

function() {

//   Update page number and nextLink.

pageNum++;

nextLink   = nextLink.replace(/\/page\/[0-9]?/, '/page/'+ pageNum);

//   Add a new placeholder, for when user clicks again.

$('#pbd-alp-load-posts')

.before('
')

//   Update the button message.

if(pageNum   <= max) {

$('#pbd-alp-load-posts   a').text('Load More Posts');

}   else {

$('#pbd-alp-load-posts   a').text('No more posts to load.');

);

On that note, if you want to see the rest of the code, you can download the completed files as a plugin. All you have to do is upload them in to your WordPress directory and activate it. But if you want to know more about the plugin’s nuts and bolts, you can check out Michael’s tutorial by clicking here.

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Use Ajax to Save Changes in Contenteditable as JSON

Keith@Blogfreakz — Fri, 30 Mar 2012 08:58:28 +0000

Contents of any HTML5 element with a contenteditable attribute can be live-edited inside the browser window. But any changes that you apply won’t be saved on the actual document itself that is located in the server, so these changes won’t appear anymore once you refresh the page.

To get around this and have the data saved is to wait for the Return key to be pressed, which then sends the new inner HTML of the element as an AJAX call and blurs the element. you can then press Esc to return the element to its pre-edited state.

You can see more of this in Remy Sharp’s demo .

JavaScript

document.addEventListener('keydown', function (event) {

var esc = event.which == 27,

nl = event.which == 13,

el = event.target,

input = el.nodeName != 'INPUT'   && el.nodeName != 'TEXTAREA',

data = {};

if (input) {

if (esc) {

// restore state

document.execCommand('undo');

el.blur();

} else if (nl) {

// save

data[el.getAttribute('data-name')] = el.innerHTML;

// we could send an ajax request to   update the field

/*

$.ajax({

url:   window.location.toString(),

data: data,

type: 'post'

});

*/

log(JSON.stringify(data));

el.blur();

event.preventDefault();

}, true);

function log(s) {

document.getElementById('debug').innerHTML = 'value changed to: ' + s;

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Create AJAX Loading Animation with CSS3

Keith@Blogfreakz — Fri, 24 Feb 2012 06:00:47 +0000

Now we don’t have to rely on animated gifs in creating AJAX loading animation effects. This CSS3 tutorial will teach us how to create three different types of loading animation.

Let’s start off with our HTML markup.

HTML Markup

Each

basically represents each of the bars in our animated loader. Now on to CSS!

CSS Markup for the first loading animation

#loading{

margin-top:30px;

float:left;

width:95px;

height:32px;

background-color:#779ec2;

margin-left:30px;

/* CSS3   Border  Radius for rounded corner */

-webkit-border-radius:   5px;

-moz-border-radius: 5px;

border-radius: 5px;

.Columns{

background-color:#fff;

border:1px solid   #fff;

float:left;

height:30px;

margin-left:5px;

width:10px;

/* Here we will   define an animation name and then we will animate it later */

-webkit-animation-name:   animation;

/* total time   for animation to complete one cycle */

-webkit-animation-duration: 3s;

/* Number of   loops for animation cycle we set it infinite */

-webkit-animation-iteration-count: infinite;

-webkit-animation-direction: linear;

/* Initially the   opacity of Columns is zero */

opacity:0;

/* Scale it to   0.8 in starting */

-webkit-transform:scale(0.8);

#Column1{

/* Column1   animation delay by .3 seconds */

-webkit-animation-delay: .3s;

#Column2{

/* Column2   animation delay by .4 seconds */

-webkit-animation-delay: .4s;

#Column3{

/* Column3   animation delay by .5 seconds */

-webkit-animation-delay: .5s;

#Column4{

/* Column4   animation delay by .6 seconds */

-webkit-animation-delay: .6s;

#Column5{

/* Column5   animation delay by .7 seconds */

-webkit-animation-delay: .7s;

#Column6{

/* Column6   animation delay by .8 seconds */

-webkit-animation-delay: .8s;

/* Earlier we have defined animation-name as animation now the   animation properties will set here */

@-webkit-keyframes animation{

/* opacity of Column   will be 0 at beginning of animation */

0%{opacity:0;}

/* opacity of Column   will be 1 at middle of animation */

50%{opacity:1;}

/* Back to   opacity zero when animation completes its cycle */

100%{opacity:0;}

Second loading animation CSS Markup

#loading1{

margin-top:30px;

float:left;

margin-left:30px;

.Columns1{

background-color:#39F;

border:1px solid   #00F;

float:left;

height:30px;

margin-left:5px;

width:8px;

-webkit-animation-name:   animation1;

-webkit-animation-duration: 2s;

-webkit-animation-iteration-count: infinite;

-webkit-animation-direction: linear;

opacity:0.2;

-webkit-transform:scale(0.6);

#Column11{

-webkit-animation-delay: .3s;

#Column22{

-webkit-animation-delay: .4s;

#Column33{

-webkit-animation-delay: .5s;

#Column44{

-webkit-animation-delay: .6s;

#Column55{

-webkit-animation-delay: .7s;

#Column66{

-webkit-animation-delay: .8s;

@-webkit-keyframes animation1{

0%{-webkit-transform:   scale(.9);opacity:1;}

100%{-webkit-transform:   scale(.2);opacity:0.1;}

Third loading animation CSS Markup

#loading2{

margin-top:30px;

float:left;

margin-left:30px;

.Columns2{

-webkit-border-radius:   10px;

-moz-border-radius: 10px;

border-radius: 10px;

background-color:#39F;

float:left;

height:20px;

margin-left:5px;

width:20px;

-webkit-animation-name:   animation2;

-webkit-animation-duration: 2s;

-webkit-animation-iteration-count: infinite;

-webkit-animation-direction: linear;

opacity:0;

#Column111{

-webkit-animation-delay: .1s;

#Column222{

-webkit-animation-delay: .3s;

#Column333{

-webkit-animation-delay: .5s;

#Column444{

-webkit-animation-delay: .7s;

@-webkit-keyframes animation2{

0%{opacity:0;}

50%{opacity:1;}

100%{opacity:0;}

Pretty short, quick, and easy, isn’t it? Have fun using it in your website!

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Upload Your Files with These 10 Powerful jQuery Uploader Plugins

Marvin@Blogfreakz — Wed, 21 Dec 2011 02:21:23 +0000

Today’s web developers are unstoppable about creating newer and better plugins for your web site, so I’ve gathered 10 of the most powerful jQuery File Uploaders for your web site or blog. One of the plugins featured here is the jQuery upload which lets you upload your files by Ajax style.

Ajax Upload by Valums

Ajax Upload provides good user experiences everywhere. It uses XHR for multiple uploads of files with progress bar in FF3.6+, Safari4+, Chrome and goes back to the hidden iframe based-upload in other browsers.

Plupload v1.5.1.1

This file uploader lets you upload your files using Silverlight, Flash, HTML5 Gears and BrowserPlus. It also allows resizing of image and shows you its upload progress.

Uploadify

This plugin combines Javascript and other known server-side languages. It has multiple file upload abilities and a large support community with the docs.

Ajax Multiple File Upload Form using jQuery

This plugin permits the user to upload multiple files easily.

Multiple File Upload Plugin

This is an unobtrusive plugin which helps the user to select multiple files with ease, provides basic validation functionality, and helps identify errors without before you upload our files.

Uploadprogress v0.3 – jQuery + PHP plug-in

It allows users to select files individually and provides information about the uploading progress.

jQuery Form Plugin

A basic file uploader form that allows you to test your files.

Fancy Upload – Swiff meets Ajax v3.0

This plugin is easy to set up, server-independent, uses MooTools to work on all modern browsers and styleable through XHTML and CSS. It features a multiple file selection menu and queued upload with animated progress bar.

SWFUpload jQuery Plugin

The SWFUploader, which was rewritten by Adam Royle, uses jQuery to make a real event dispatcher. It makes multiple SWFupload instances on single page easier to manage, completely separates SWFUpload object from UI codes, and has the ability to assign multiple callbacks per event.

IqUploader

This plugin sends the file you choose the email address you input.

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One Line Ajax Requests With jQuery-ahm

Mufti Ali — Wed, 06 Apr 2011 13:19:37 +0000

jquery-ahm is a light-weight jquery plugin that reduces ajax requests to one-line. jquery-ahm is a replacement for $.ajax. With $.ajax, every ajax request needs a callback, resulting in a lot of javascript. $.ahm reduces javascript code by letting the response data define the actual callbacks.

Features

Super light-weight: ~1KB minified
Reduces ajax requests to one-line (including ajax form validation)
No more custom callbacks for every ajax request
Lets back-end define post ajax callbacks (applied automagically)
Supports all jquery + custom callbacks in back-end code
Drop in replacement for $.ajax() (supports all $.ajax options)

Requirements: jQuery Framework
Demo: http://www.jqueryahm.com/examples
License: MIT License

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20 jQuery and CSS Awesome Effects

Mufti Ali — Sat, 05 Mar 2011 02:24:13 +0000

jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript. You can create amazing effects using jQuery coupled with CSS and XHTML. Some previous posts on Designing Mall, like Five Usefull CSS Properties and Pure CSS Effects and Tips deals with basic information regarding to CSS Effects, while this post belongs expert level of Effects some are with sources. So explore indepth about jQuery and CSS Effects and Animations in this post

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An Outstanding Collection of Resources for WordPress Content Sliders

Mufti Ali — Mon, 21 Feb 2011 12:36:44 +0000

A collection of tutorials and plugins to give your WordPress website a featured content slider.

35 Latest AJAX Tutorials at your Disposal

Mufti Ali — Mon, 14 Feb 2011 11:27:27 +0000

The presented post includes 35 Latest AJAX tutorials at your Disposal, they cover almost every aspect of AJAX development: forms, applications, polls, editing, parsing, visual effects and much more.

Add onto Your PHP Knowledge with 30 Expert Tutorials

Mufti Ali — Fri, 11 Feb 2011 09:52:24 +0000

Internet realm is vast and does not limit itself for some basic development tools. It has diverse development tool kit in which PHP has a very significant role. PHP is an awesome tool and can develop desired website. Keeping this in mind, I am posting this perfect PHP round up article for those who are not expert but they want to be.

Learn Best with 50 jQuery Tutorials

Mufti Ali — Tue, 08 Feb 2011 18:50:07 +0000

Web design cannot be finished without jQuery because of many appropriate benefits. jQuery is very lightweight JavaScript library that emphasizes interaction between JavaScript and HTML. It basically simplifies HTML document crossing along with event handling and animating for rapid web development.