Sometimes you may need newer version of jQuery to run your custom theme or some plugins. In that situations you may want to remove WordPress core jQuery to load your own version of jQuery.

If you are creating a HTML form, especially jQuery Ajax driven form, you might want to disable the submit button while page goes into loading mode, because you don’t want user to resubmit same content and cause script failure. To prevent this from happening, we need to disable submit button, here’s how.

Cron jobs allow you to automate certain commands or scripts on your site. You can set a command or script to run at a specific time every day, week, etc. For example, you could set a cron job to delete temporary files every week to free up disk space.

Posting pictures on Facebook works similar as Posting to Facebook Page Wall, you can post not just photos, but questions, status, notes etc in a similar way. In previous post we have seen how we can post a photo to page wall by specifying its relative path, but in this tutorial we will upload picture and directly post to user profile page using an upload form.