Otherwise, make sure you have a site backup before making any changes. That way, if something goes wrong, you can always revert to a working version of your website.
There are two parts of your WordPress site you need to back up before adding any customizations:
- Database: Where all your posts, pages, settings, and configurations are stored.
- Files: Your images, videos, themes, and plugins.
You can use a plugin like Jetpack to back up your WordPress site quickly and easily. Another option is to back up your files manually. You should also consider creating a child theme for adding custom code.
A child theme is a duplicate of your current theme that you can customize without affecting the original code. You can simply activate the original theme to revert any changes if you make a mistake. This also allows you to update your parent theme without losing the code changes you made.
Method 1: Use a plugin
For this tutorial, we’ll be using Insert Headers and Footers.
Once the plugin is activated, navigate to Settings → Insert Headers and Footers in your WordPress dashboard.
This code will display a Try it button in the header. When you select the button, it will confirm that you pressed it.
You can test this feature out by going to your website and clicking on the Try it button.
Method 3: Use WordPress functions and hooks
A hook is a WordPress feature that can add code without editing any core files. There are two types of hooks: actions and filters.
An action is a PHP function triggered at specific points during the loading of a page. As an example, the wp_head action hook is triggered before the </head> tag in your theme’s header.php file. You can use this hook to add custom code or scripts to your header.
Filters modify existing code or data. For example, the_content filter can alter the content of a post before it’s displayed.
Add a new folder in your WordPress directory to create a child theme. Then make a style.css file that will contain your child theme’s styles. Next, you’ll need to add the following code to your style.css file:
/* Theme Name: Twenty Twenty-Two Child Template: twentytwentytwo */
Now that you’ve created your child theme, you can activate it by going to Appearance → Theme File Editor from your WordPress dashboard. Navigate to the functions.php file, then add the following code:
When you’re done, save your changes.
Method 4: Create a plugin
Replace the Plugin Name, Plugin URI, Description, Author, and Author URI fields with your values. These are just general information fields that describe your plugin.
Your plugin should now be installed and activated. You can verify it’s working by going to the Plugins page in your WordPress admin panel. You should see your plugin listed there.
You will need to change the “1” in the above code to the post or page ID. You can find this number by opening the post from your dashboard, then finding the URL in the browser bar. The ID number will be next to “post=”:
To use Insert Headers and Footers, simply install and activate the plugin. Then, go to Settings → Insert Headers and Footers.
This code will hook into wp_footer. Remember to save the file to update the changes when you’re done.
Adding an “onclick” event to a WordPress button is a great way to add extra functionality to your website. You could use an onclick event to trigger a popup window or display a message when the button is clicked.
Once you have added the onclick attribute, hit the Save button. Your button should now have the onclick event added to it.
Open the file via a File Transfer Protocol (FTP) client or your File Manager. Then insert the following code:
Remember to place this code before the “That’s all, stop editing! Happy blogging” line.
You can also access the developer tools by pressing Ctrl + Shift + J (Windows/Linux) or Cmd + Option + J (Mac).
If you’re unsure what the error means or how to fix it, you can search for it online. Just copy and paste the error message into a search engine, and you should find some helpful results.
You can also try deactivating all of your WordPress plugins to see if that approach fixes the issue. If it does, you know that one of your plugins is causing the problem. You can also narrow down which tool is causing the issue by reactivating your plugins one at a time until you find the culprit.
If you’re still having trouble, consider contacting your WordPress hosting company for further assistance. They should be able to help you identify and fix the issue.
How to add other coding languages to WordPress (HTML, CSS, PHP)
There are various methods to add other coding languages to WordPress. For instance, you can use the Custom HTML or Code blocks.
Another method is installing a plugin like Code Snippets.
The Code Snippets plugin lets you add code directly in the editor and give it a title. You can also choose whether to execute the code in the header or footer of your site.
In your WordPress dashboard, navigate to Appearance → Editor and locate the file named footer.php. Click on this file to edit it.
At the bottom of the file, you’ll see a line of code that looks like this: “wp_footer();”. Add the following code above this line:
wp_enqueue_script( 'jquery', get_template_directory_uri() . '/js/jquery.js', array(), '1.0.0', true );
Save your changes. Your jQuery library should now be added to WordPress. You can test it out by going to the front end of your website and seeing if it’s working correctly.
This method will allow you to use the following shortcode in your post or page content. You can then use this same technique to enqueue any other scripts you need for your shortcode.
Start customizing your WordPress site
The best method for you will depend on your preferences and the nature of the code you’re adding. Working directly with your theme might be easiest if you’re just inserting a small amount of code. But if you’re adding a lot of code, using a plugin or editing functions.php might be better.