ABOUT AJAX
  • Update a web page without reloading the page
  • Request data from a server - after the page has loaded
  • Receive data from a server - after the page has loaded
  • Send data to a server - in the background
Examples of  using AJAX: 
Google Maps, Gmail, YouTube, and Facebook.

AJAX = Asynchronous JavaScript and XML.(You don't have to understand XML to use AJAX.)

AJAX is Based on Open Standards

AJAX is based on the following open standards:
  • Browser-based presentation using HTML and Cascading Style Sheets (CSS).
  • Data is stored in XML format and fetched from the server.
  • Behind-the-scenes data fetches using XMLHttpRequest objects in the browser.
  • JavaScript to make to display/use the data.

Comments

Post a Comment

Popular posts from this blog

What is an operator? An  operator  is an object that is capable of manipulating a value.  For example, in "1 + 2", the "1" and "2" are the operands and the plus symbol is the operator.  JavaScript supports the following types of operators.   Arithmetic Operators Comparision Operators Logical (or Relational) Operators Assignment Operators Conditional (or ternary) Operators
Read more
Use of page.php in WordPress. Display page title and page content. Display comment list and comment form (unless comments are off). Include  wp_link_pages()  to support navigation links within a page. Metadata such as tags, categories, date and author should not be displayed. Display an "Edit" link for logged-in users with edit permissions. Use of single.php in WordPress. Include  wp_link_pages()  to support navigation links within a post. Display post title and post content. Display the post date. Display the author name (if appropriate). Display post categories and post tags. Display an "Edit" link for logged-in users with edit permissions. Display comment list and comment form. Show navigation links to next and previous post using  previous_post_link()  and  next_post_link() . Use of function.php in WordPress. The functions file behaves like a  WordPress Plugin , adding features and functionality to a WordPress site....
Read more

Bootstrap Breakpoints

  // Extra small devices (portrait phones, less than 576px) // No media query for `xs` since this is the default in Bootstrap // Small devices (landscape phones, 576px and up) @media ( min-width : 576px ) { ... } // Medium devices (tablets, 768px and up) @media ( min-width : 768px ) { ... } // Large devices (desktops, 992px and up) @media ( min-width : 992px ) { ... } // Extra large devices (large desktops, 1200px and up) @media ( min-width : 1200px ) { ... } // No media query necessary for xs breakpoint as it's effectively `@media (min-width: 0) { ... }` @include media-breakpoint-up ( sm ) { ... } @include media-breakpoint-up ( md ) { ... } @include media-breakpoint-up ( lg ) { ... } @include media-breakpoint-up ( xl ) { ... } // Extra small devices (portrait phones, less than 576px) @media ( max-width : 575 .98px ) { ... } // Small devices (landscape phones, less than 768px) @media ( max-width : 767 .98px ) { ... }...
Read more