3
The double NOT operator (!!)
It's simply a way to convert/type-cast a non-boolean value to a boolean value, and !! <expression> gives us the opposite of ! <expression>.
let foo = 'bar'; // non-empty string
console.log( ! foo, !! foo ); // false, true
foo = ''; // now it's an empty string
console.log( ! foo, !! foo ); // true, false
Issues in ...
2
Anytime you want to use JavaScript in WordPress, you should enqueue it.
Save the JS as a file, ie clickbutton.js inside your theme folder:
document.getElementById("defaultOpen").click();
Then in functions.php, enqueue that file:
add_action('wp_enqueue_scripts', 'wpse_371294_enqueue_js');
function wpse_371294_enqueue_js() {
wp_enqueue_script('...
1
In your GalleryImage
const { withSelect } = wp.data;
const { compose } = wp.compose;
// You should define __
const { __ } = wp.i18n;
In your FeaturedGallery
You need to return the element, and set a key for the element (which is a list item): ( I also removed the index because it's not being used.. if we define a variable, it should be used. :) )
And ...
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