Stop Refreshing With Ajax , Javascript , Php

My code looks like this:

Share

You may like these posts

• 
  Html Marquee Text On My Site Moves At A Weird Speed But When It's Viewed In Chrome, It's Perfectly Fine?
• 
  Irregular Anchors And Shapes Using Js In Html/html5
• 
  Newly Generated Ul Li Input Values Not Getting Pushed Into Waypoints Array / Not Working With Google Maps Places Autocomplete
• 
  Remove 'previous', 'next' And 'done' Button At Html Form