Hook a function to the customize_preview_init action. In that function, do your add_action for the wp_head.
The customize_preview_init action runs in the call that renders the frame that the preview page is displayed on, and happens early enough to hook onto wp_head.
Related Posts:
- Responsive Images – Generating multiple images from Theme Customizer control upload?
- Modify Javascript Configuration Options for Theme Customizer Colour Picker
- Modify the Additional CSS section (adding a disclaimer)
- Customizer: Unique identifier that distinguishes which image upload control is uploading an image
- Disabling Customizer Selective Refresh shortcut icons for selected controls
- JavaScript stops working on selectively refreshed sections one inside the other
- “Add A Widget” button in the Customizer
- Customizer: save setting/control content to post/page
- Q: How to pull data from custom table to populate zustomizer setting/control select options
- Is it possible to visually group items on the theme customizer?
- Customizer – loading settings/controls/sections/panels based on a id/page id
- Default Text not showing from customizer
- How to transfer one domain to another domain without losing theme options (customizer)?
- Customizer: get_preview_url() inside customize_save_after hook
- add shortcode support in customizer
- What is difference between add_theme_support and Theme Customization API?
- Text View (Code View) in WordPress Customizer TinyMCE Editor
- WordPress Customizer Help with FontAwesome Icon
- Customizer API way function is_customize_preview() works only in main page?
- trying to figure out how to use more that one image upload in the same section in theme customizer
- When to use is_home() vs is_front_page()?
- How To extend WP_Customize_Control
- How do I remove a pre-existing customizer setting?
- Using classes instead of global functions in functions.php
- Theme customizer – settings order
- Custom Image section in Customizer
- Get entered value of customiser field for live preview
- How to remove the Theme Customization Button from the dashboard and themes options page?
- Is it possible ( or advisable) to allow open access to the new theme customizer for potential clients?
- What are the ADVANTAGES of ORIGINAL wordpress template structure?
- Change admin bar to default:off
- Add a dropdown to theme customizer
- Theme Customizer : how to create multiple-level panel
- Allow Shortcode in Theme Customizer
- Theme Customizer – Nested Sections?
- How to change admin bar color scheme in MP6 / WP 3.8 front end?
- Customizer Active Callback not working
- Template for individual post designs
- Can I create customizer setting that can handle plugin shortcode?
- Editing the custom background CSS
- How to execute conditional script when on new customize.php (Theme Customize) screen
- When to use esc_url, esc_html, esc_attr, and friends?
- Is the theme customizer slowing down my site?
- Trigger Customizer saving process with Javascript only
- Adding customizer styles with wp_add_inline_style
- Best practices – Should I create a child theme vs. customizing a framework theme? (such as HTML5 reset)
- How can you develop on a live WordPress installation that is using W3 Total Cache? [closed]
- How to disable 3.1 “Admin Bar” via script for the admin user?
- What is the best practice for customizing a plugin’s JavaScript/jQuery?
- WordPress Customizer Typography: How to load just the unique Google Fonts?
- WordPress Customize — Move “menus” options / field to another section
- Can we add more than one control under a setting in WP theme customizer?
- Widgets panel not displaying in the Theme Customizer
- Front End Post Submit Form
- Is it possible to display the admin bar while in the Theme Customizer?
- How do I get a parent theme modification from a child theme?
- Feature Survey – What would you want in a resume theme?
- Changing the entire control choices using wp.customize with JavaScript
- How the WordPress sidebar works
- How to Change CSS Variable value in Theme Customizer Live Preview
- Should we localize custom-made themes / plugins?
- Change loop order via form or link (jquery, not URL)
- Extend walker – navigation, adding data attribute to a tag
- How can I remove the Static Front Page option from the Customizer
- How to remove menus section from WordPress theme customizer
- Set front page as static page [closed]
- How to programmatically bring back “excerpts” field in post editor in WP 3.1+
- Get background color for Live Preview with Theme Customization API?
- How can i customize the comment list
- How to add custom template tag in wordpress theme?
- Checking if there is an Image inserted – if not don’t display anything
- How should I store global information such as a phone number so that it is editable through the CMS?
- When developing a distributable Theme, does it HAVE to be “inheritable”?
- How to handle theme customization and sass variables
- wp_enqueue_scripts not called on search page?
- wp_head() not inserting the default stylesheet style.css
- Upgrading a custom theme through the Dashboard
- “Display Site Title and Tagline” checkbox not working?
- First completely customized theme, where should I start?
- WordPress how to override function adjacent_posts_rel_link_wp_head() in link-template.php the correct way
- How to set page template on front using starter content?
- Theme Customizer not loading
- Default header image does not display
- WordPress Customizer Control with React
- How to retrieve an image from a post and display it before excerpt of a post? [duplicate]
- Best practices: Custom theme sidebar menu – hardcode or widget?
- Best approach to create sites with Modular Content? [closed]
- How to change the customizer´s sidebar width?
- Theme Customizer – Choose where widget area appears, to let users organise widgets
- What’s the best action to use when you want to do something only once per theme setup?
- wordpress custom theme import and export options for sample data [closed]
- How to hook CSS file according to theme selection in the customizer section
- Version control for both Vagrant config and themes being developed [closed]
- How i can get widgets areas working in customizer?
- How Can I Create a List of Values to Be Iterated Through via WordPress Customization API?
- Change setting name in Customizer and keep the data
- Customizer API and add_panel(). Panel doesn’t show
- How to correctly add JQuery in a WP theme?
- Creating multiple hooks for theme
- after_setup_theme, Global Variable and Theme Customizer