Demo: https://tuanphan-demo01.squarespace.com/click-text-show-image?noredirect
Password: abc
Suppose you have 2 Texts.
You want: when users click on each Text > Show Image Block.
#1. First, you add a Text Block with some text/url.
Make sure the option “Open link in new tab” is disabled
- #before
- #after


and 2 Image Blocks below.

#2. Install Squarespace ID Finder to find the ID of the Image Block.
In my example, we will have:
- Left image: #block-yui_3_17_2_1_1714637665132_10256
- Right image: #block-yui_3_17_2_1_1714637665132_10719

#3. Use code to Code Injection – Footer (or Page Header Code Injection)
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
$(document).ready(function(){
// Before
$("#block-yui_3_17_2_1_1714637665132_10256").closest('.fe-block').addClass('before show');
// After
$("#block-yui_3_17_2_1_1714637665132_10719").closest('.fe-block').addClass('after');
// Before
$('a[href="#before"]').click(function(){
$(".before").addClass("show");
$('.fe-block:not(.before)').removeClass('show');
}
);
// After
$('a[href="#after"]').click(function(){
$(".after").addClass("show");
$('.fe-block:not(.after)').removeClass('show');
}
);
});
</script>
<style>
.before .image-block, .after .image-block {
display: none;
}
.show .image-block {
display: block !important;
}
.show {
z-index: 999999 !important;
}
</style>

#4. Explain code
