A non-JS option:
Just swap out ‘company_detail’ for the name of your WYSIWYG field.
And set/alter the length of the excerpt by changing the ’32’
<p>
<?php
$raw_content = get_field( 'company_detail' );
$trimmed_content = wp_trim_words( $raw_content, '32' );
$clean_excerpt = apply_filters( 'the_excerpt', $trimmed_content );
echo esc_attr( $clean_excerpt );
?>
</p>
