Apply CSS class to every second database record [closed]

Inside the loop you can use $the_query->current_post to get the index of the post currently being displayed. You can then check if the index is an odd or even number and conditionally add the class. Example:

if ( 1 === $the_query->current_post % 2 ) {
  echo 'class="switchable"';
}

Related Posts:

  1. Can I force WP_Query to return no results?
  2. Multiple WP_Query loops with Pagination
  3. WP_Query vs get_posts
  4. WP_Query and next_posts_link
  5. Too slow when using both ‘tax_query’ and ‘meta_query’ both in WP_Query
  6. Get array of posts from the current archive page loop
  7. How-to exclude terms from the main query the most performant way?
  8. Pagination with WP_Query is buggy – working for some pages, but not the others
  9. Get the number of posts from the current page results
  10. How can I save an array from a random post sequence for later use?
  11. In loop: posts have thumbnail AND other variables
  12. How to order category.php loop by ‘meta_value’?
  13. Add inline HTML to posts published within last 24hrs
  14. Move posts to top of WP_Query if in certain Taxonomy?
  15. Ajax Infinite Scroll In Custom WP_Query Loop Not Working
  16. Display different number of posts from one category on the different pages
  17. Pagination not working Search posts
  18. Injecting content with $wp_query->current_post restarts from zero on paged pages. How to inject content after X posts, regardless of pagination?
  19. Can certain (site-crashing) limitations on WP_Query in shortcode be overcome?
  20. wordpress query in header won’t reset and corrupts other loops
  21. Implementing an OR statement to wordpress wp_query
  22. Get List of all the Authors
  23. Create ONE callback for all page templates, post filter queries + paginated pages, triggering pagination via AJAX
  24. Pagination is broken and I need help fixing it
  25. How to use WP_Query to display many posts?
  26. Counter problem, infinite loop when post_per_page equals X
  27. How to vary post loop results layout and resume?
  28. Five posts from a category in footer
  29. Get a post from other loop each n-posts in the main loop
  30. How to get all unique categories for posts in loop?
  31. WordPress Loop and $post
  32. Using the_post_thumbnail resets current loop item ID
  33. Order by empty custom field
  34. Excluding pages in WP_query using ACF
  35. reset to main loop doesnt work
  36. Some doubts about how the main query and the custom query works in this custom theme?
  37. Post loop for all taxonomy terms
  38. New WP_Query loop in admin causes problems
  39. Only display post if published in last 24 hours?
  40. Need to convert string of term ids into comma separated integers for use in an arguments array
  41. How to remove the most recent post from $the_query
  42. WP_Query loop else statement not executing
  43. How do I get my custom query to work with search results after the first page?
  44. Issue with front page navigation after upgrading to 3.4
  45. Include current post into loop
  46. Check for the main query from the template
  47. Exclude recently updated post from custom WP_Query using multiple loops
  48. get_posts output always same post
  49. How to use WP_Query() on single.php?
  50. difference between querying database and using the loop
  51. Stomping WP_Query in author archive to facilitate pagination with custom queries
  52. How to make posts unqueryable/unpublish posts where ACF relationship field is an unpublished post? [closed]
  53. Loop increase in while loop not working
  54. posts archive page – closing WP_Query loop correctly [closed]
  55. has_excerpt() not working inside wp_query
  56. AJAX Breaking Offset Argument In WP Query
  57. Continue or break the while loop
  58. Loop posts based on permalink term
  59. Save (and exclude) posts from loop to use in another loop on page
  60. Get all posts with empty meta_value
  61. Loop 3 posts column wise and continue the loop into same columns
  62. Check if a post has term inside loop
  63. How to Order By Two Custom Fields?
  64. Display specific page (that is child) content on parent page
  65. Does putting queries within loops cause an issue on WordPress?
  66. Function using get_posts() with tax_query not working when called from functions.php
  67. Query Not working as expected
  68. Paginate pages with dynamic query
  69. WP_Query loop doen’t work with my custom taxonomy
  70. How to make the ‘request’ filter work?
  71. get_children() Archive Template
  72. Populate select list with meta values from all posts of a Custom Post Type
  73. show most viewed post
  74. How do I stop the same post showing multiple times in a archive?
  75. how to get custom attachment url?
  76. How can I use WP_Query to sort ‘event’ custom post type by date?
  77. Display posts side by side with custom query
  78. WP_Query & Duplicate entries
  79. WordPress For Loop Prints Unwanted Extra Paragraph Element
  80. Calling a function with WP_Query only ever brings the first result
  81. query_posts() doesn’t seem to be called in my page
  82. Pagination returns 404 after page 20
  83. Ordering Posts by parent category, name ascending
  84. WP_Query a custom field value bringing back 0 results
  85. Set Transient on CPT
  86. Create multiple sections for all categories and then queries all the posts for each of those categories
  87. Multiple wp_query loops showing first 5 posts on all pages instead of older posts[Resolved]
  88. Next / previous posts link doesn’t show up with Posts 2 Posts
  89. meta_query dates from an array
  90. Creating array to compare custom field values
  91. Carousel Loop only duplicating
  92. Remove 5 latest posts from the loop
  93. Exclude post formats in custom loop
  94. How to show featured post first, then separate loop for other posts
  95. Show linked products using wp query and woocommerce
  96. Standard Loop – wp_query
  97. Custom Wp_query loop takes very long
  98. Woocommerce set loop_shop_columns to be 3 in the main shop page loop only and 4 otherwise
  99. Prevent WordPress loop from displaying similar post titles
  100. Custom WordPress loop, articles not in same order as Array