Ajax & PHP scriptsThe popularity of Ajax is increasing day by day. One of the best example as used by google is google suggest. Here based on the user keywords entered at search box, google returns matching keywords or extension of this words as searched before by users.Ajax the short form of asynchronous JavaScript and XML we will try to learn by studying some examples here. As you know Ajax is itself not a scripting language so we will be using our script PHP for programming here and other languages in different sections. Connecting to a JavaScript fileWe can keep our JavaScript file used for Ajax inside the main file or can keep in external .js file. Any external JavaScript file can be included inside the main file like this.<script src='query.js'></script>Checking Script supportAs Ajax depends on client side scripting, we need to check the script support is enabled ( in browser ) or not. Here is the code we can use to display message if scripting is disabled.<noscript>Your browser does not support scripts, you have to enable it to run this page</noscript>Let us start with some examples on uses of AjaxXMLHttp objectTo work in Ajax we have to create XMLHttp request objects based on type of browser. This object we will use to pass data and collect the data from the server.Form submission in GET methodUsing GET method we can submit form details to a backend PHP script using AjaxServer ClockDisplays a clock showing server time where request is send in every second to server to get the dataAdding options to a datalistDatalist can be used for auto complete of a textbox. We will learn how to add options to a datalist.Dependant list box using AjaxWe will be using Ajax to send the selection value of first drop down list and then based on this value we will send one more dependant drop box.Read MoreValidation of email addressWe will use Ajax to pass email data as entered by user and then this address is checked with a validation code written in PHP. Read MoreCustomer Details from ServerUsing Ajax we can Post customer id to server and collect the matching details of the customer. . Read MorePHP MySQL Paging script using AJAXWe can create a paging script by breaking records into pages using Ajax, PHP and MySQL database. . Read MoreMessage Display by using Ajax & PHPWe need to communicate with visitors while processing data in server. Learn the basics of displaying, hiding messages using layers by DIV tag.Ajax based progress barThe status of script exection can be shown by a growing progress bar. This is the basic of how to display a growing progress bar.MySQL PHP Ajax based progress barData is taken from a MySQL table and status is updated from the main script.Form validation using Ajax PHPWe can display the error messages without reloading the page or sending all the data to server side script by using PHP and AjaxForm validation by using onBlur event with Ajax and PHPWhile filling the data we can validated the form by sending the details to server side script by using Ajax and PHP.JsonWhat is Json ? How to know Json support is available in our PHP or not? What we can do with our Json functions? . . Read MoreKeyword Search in MySQL table as we typeWe can get the result from our database table by applying search command. Here data is posted to backend query as we type and results are displayed.Records based on selection of drop down list boxRecords of a sub-category can be displayed after selection of a category from a drop down list box.
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Ajax & PHP scripts
Creating XMLHttp object in different browsers
Sample Code: Get Method of Ajax form submission
Server Clock:: Display real-time date and time of server
Dependant drop down list box using Ajax & PHP
Email validation using Ajax in a form
Getting customer details by entering customer id using Ajax
Progress Bar using Ajax
Progress Bar using MySQL PHP & Ajax
Displaying Message at client side using Ajax & PHP
Web page HTML form validation using Ajax and PHP
Form validation with onBlur event using Ajax and PHP
Json support in PHP json_encode to generate Json string from PHP Array data Json Data formatting to return database records to main script Searching MySql database as we type using Ajax Displaying all records based on selection of a drop down list box
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