Employ the power of AJAX to selectively display or conceal a specific group of images

Question

Employ the power of AJAX to selectively display or conceal a specific group of images

Have you ever thought about showcasing a large number of images on a non-CMS website? Say you have 50 images that can't all be displayed at once. One idea is to display the first 15, then allow users to click "Next" to reveal the next batch of 15, and so on.

How can this be achieved using AJAX, PHP, and CSS?

Perhaps counting, adding a hidden class, and toggling visibility could work?

Alternatively, in PHP or jQuery, how can you target the first 15 elements within a div with the class "image," add a "showimage" class to them, and then upon clicking a "NEXT" button, remove the "showimage" class from all and reveal images 16 to 30?

A sample code snippet may look like the following:

<div id="gallery2"> <!-- Photo Gallery --> 

<a href="ia/new_01.jpg" class="highslide" onclick="return hs.expand(this)">
<img src="timthumb.php?src=ia/new_01.jpg&amp;h=<?php echo $size ?>" title="Click to enlarge" 
alt="Pont Neuf - Ile de la Cité - Paris - France - Watercolor <br> Personal design"/></a>

<a href="ia/new_02.jpg" class="highslide" onclick="return hs.expand(this)">
<img src="timthumb.php?src=ia/new_02.jpg&amp;h=<?php echo $size ?>" title="Click to enlarge" 
alt="Studebaker Hawk - Retro concept <br> Personal design"/></a>

<a href="ia/new_03.jpg" class="highslide" onclick="return hs.expand(this)">
<img src="timthumb.php?src=ia/new_03.jpg&amp;h=<?php echo $size ?>" title="Click to enlarge" 
alt="Corvette - Retro concept <br> Personal design"/></a>

<a href="ia/new_04.jpg" class="highslide" onclick="return hs.expand(this)">
<img src="timthumb.php?src=ia/new_04.jpg&amp;h=<?php echo $size ?>" title="Click to enlarge" 
alt="Thunderbird - Retro concept <br> Personal design"/></a>

<a href="ia/new_05.jpg" class="highslide" onclick="return hs.expand(this)">
<img src="timthumb.php?src=ia/new_05.jpg&amp;h=<?php echo $size ?>" title="Click to enlarge" 
alt="My Father's Cars <br> Personal design"/></a>

Repeat the process for the remaining images up to 50.

css ajax

Answer 1

Answer №1

There is no need for ajax in this scenario. Instead, you can store all the image URLs in a JavaScript array. Then, when the user clicks on a "next" button, you can simply hide the current 15 images and replace them with the next 15 images from the array. This allows the browser to render the images on the fly.

var images=[]; // array to store images
var ptr=0;
var length = 15;
function show(offset, count){
    for(var i=offset;i<offset+count;i++){
        // add image images[i] to the image container
    }
}
function next(){
    // clear the image container
    ptr+=length
    show(ptr, length);
}

show(0, length); // display first set of images initially

To enable the functionality for the "next" button, simply attach the next function as a click handler.

Answer 2

There is no need for ajax in this scenario. Instead, you can store all the image URLs in a JavaScript array. Then, when the user clicks on a "next" button, you can simply hide the current 15 images and replace them with the next 15 images from the array. This allows the browser to render the images on the fly.

var images=[]; // array to store images
var ptr=0;
var length = 15;
function show(offset, count){
    for(var i=offset;i<offset+count;i++){
        // add image images[i] to the image container
    }
}
function next(){
    // clear the image container
    ptr+=length
    show(ptr, length);
}

show(0, length); // display first set of images initially

To enable the functionality for the "next" button, simply attach the next function as a click handler.

Employ the power of AJAX to selectively display or conceal a specific group of images

Answer №1

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