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Ajax & PHP scripts
The 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.
Checking Script support
As 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 Ajax
To 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.
Using GET method we can submit form details to a backend PHP script using Ajax
We 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 More
We 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 More
Using Ajax we can Post customer id to server and collect the matching details of the customer. . Read More
We can create a paging script by breaking records into pages using Ajax, PHP and MySQL database. . Read More
We need to communicate with visitors while processing data in server. Learn the basics of displaying, hiding messages using layers by DIV tag.
The status of script exection can be shown by a growing progress bar. This is the basic of how to display a growing progress bar.
Data is taken from a MySQL table and status is updated from the main script.
What is Json ? How to know Json support is available in our PHP or not? What we can do with our Json functions? . . Read More
We 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 of a sub-category can be displayed after selection of a category from a drop down list box.
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| | sumit | 18-02-2009 |
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| thanx | | dhirendra | 22-04-2009 |
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| post comment | | test | 07-05-2009 |
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| testing the form | | kamal | 24-07-2009 |
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| testing the data. |
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