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Contact Form 7 is the best plugin to build forms — every web developer already knows it. However, due to its limitless configuration and layout possibilities, we often rely on additional plugins to complement it.
To show a hidden field when selecting an option in a select field, we use this plugin, which adds conditional fields support.
On my first experience with it, it took me just 3 minutes to understand how it works — it’s simple.
Example:
