alternating classes on wp_list_pages

Consider this a complement to toscho’s solution.

I believe that …

$this->alternate = ($this->alternate != 'background_1') ? 'background_1' : 'background_2';
$css_class[] = $this->alternate;

… will do what you want.

The difference is that toscho’s solution, using the static keyword, will make that variable static for any instantiation of this walker– that is, all instances will share the same value. If you instantiate two walkers the second will pick up where the last left off. That may be what you want, or it may not be. Using $this will limit it to the one instance of the walker only.

Related Posts:

  1. $item->url not retrieving url in custom walker?
  2. How to prevent custom walker from creating sub navigation for pages that are not relatives of the current page?
  3. How can I hide children of draft pages using wp_list_pages()?
  4. How to List All Pages (With their template names) Within a Website
  5. How can I list all pages with their templates?
  6. Add Parent to List of Subpages
  7. get all page IDs from wp_list_pages
  8. Add class to the items in wp_list_pages
  9. Display grandchildren on child and grandchild pages using wp_list_pages
  10. Load parent pages when there are no child pages
  11. create shortcode to show children if any otherwise siblings
  12. dynamically limit depth of wp_list_pages
  13. Conditional styling of wp_list_pages bullet points [closed]
  14. Setting multiple values to as sort_column
  15. wp_list_pages – Using a Walker to customize output order
  16. Custom category listings
  17. How can I include private pages in a page list?
  18. Do Not Display Parent Page if No Subpages
  19. Arrange Combined List of Pages and Categories
  20. Make wp_list_pages print slugs instead of titles
  21. List pages within a certain parent and show published month
  22. Change Parent Name with wp_list_pages?
  23. List all Posts under heading in wp_list_pages menu
  24. wp_list_pages() but only show children on the branch you are on
  25. Append a code when at the current page in wp_list_pages()
  26. WordPress Side Navigation with Parent Heading and Child Sub Pages
  27. List pages to show only Whitelisted sub pages
  28. Get Parent List Class for Child Pages Using Walker
  29. List subpage of subpage
  30. wp_list_page with something like showpost
  31. How can I list all page titles and IDs?
  32. Hide Parent if No Children
  33. Add Parent to Subpage List
  34. active parent page when clicked on childpage
  35. WP List Pages – Add Title Attributes to Anchors
  36. wp_list_pages Hierarchical Help
  37. remove auto generated pages from the menu?
  38. Inset image thumbnail from page into list
  39. Exclude current page in wp_list_pages
  40. Sub Navigation in Sidebar
  41. wp_list_pages bug in “number” parameter
  42. Targeting specific instane of wp_list_pages
  43. Renaming wp_list_pages class
  44. wp_list_pages issue/bug?
  45. WordPress get_pages sub nav show current page
  46. Change class name in WordPress wp_list_page nav
  47. Non page link in wp_list_pages
  48. only display Pages which have children
  49. add a.parent in wp_list_pages
  50. wp_list_pages by taxonomy?
  51. wp_list_pages Format only on Recently Modified Pages
  52. Adding custom class names to anchor in wp_list_pages
  53. Walker Class : extract function and wp_list_pages
  54. Exclude pages by custom field (with yes/no) storing wrong data?
  55. Any walker causes blank menu?
  56. Custom Nav Walker menu – Display children count
  57. Adding Post Counts to Menu (Nav) Programmatically?
  58. Show top-level parent with submenu menu walker
  59. Adding a class (arrows) to main menu links that have children?
  60. Adding html elements to wp nav menu
  61. Bar separated navigation by extending Walker_Nav_Menu
  62. wp_nav_menu custom walker – child items
  63. Getting post content within wp_nav_walker
  64. Walker nav remove submenu ul from a certain depth
  65. Insert HTML inside link in a walker
  66. Trouble creating conditional PHP for nav menu items with children for custom Walker
  67. How to get specified parent page title in my function
  68. Bootstrap Navwalker not displaying
  69. Highlight another nav item
  70. WordPress empty Nav Menu error
  71. wordpress wp_list_pages help
  72. walker – 0 level on submenu formatting
  73. Combine get_page_by_title to exclude pages from wp_list_pages
  74. CSS_Menu_Walker not showing on mobile view?
  75. Custom megameu walker need improvement
  76. Exlude pages from wp_list_pages
  77. How to actually make menu walker alive on admin interface?
  78. Get parent of current page
  79. Exclude pages by menu order
  80. How do I get_the_content in a custom walker?
  81. How to modify the output of wp_terms_checklist when used within the built-in category metabox on edit posts?
  82. Change page name in admin list
  83. Remove a class from a using Walker
  84. wp_nav_menu: Is there a way to modify the output of that got a submenu?
  85. Creating Custom navigation in wordpress with sub menus
  86. How to convert the argument of wp_list_pages to an array
  87. How to change the menu mark up with walker_nav_menu class?
  88. How can I list the current pages siblings and any ancestor page siblings?
  89. Dynamic menu wp_list_pages displaying only current branch including: current page, his siblings and its childs
  90. Custom nav walker: How to acces the $args parameter?
  91. Add classes + taxonomy terms to wp_list_pages() output
  92. Disable the link on certain pages
  93. Hook or callback when wp_nav_menu() has completed
  94. wp_list_pages two columns
  95. Walker_Category – not reliably saving
  96. Extending Walker_Nav_Menu in wp_nav_menu List of Empty Items
  97. List pages including both parent and child pages
  98. Help with output of post classes using apply_filters
  99. Override edit_custom_walker.php to conditionally show input depending on menu position
  100. current_page_item and custom post type?