In this tutorial, you will learn how to get the query string parameters from URL using javascript or jQuery. Query string parameters are used to send the extra information to the server, generally, server-side languages easily read the query string parameters, but if you want to get the query string parameter in javascript, you can also get that using location. search property.
Tutorial By - J John Hart
In this tutorial, you will learn how to set and get the config items in Codeigniter, In the Codeigniter application, we can set the config items manually, in application/config/config.php file you have to set the items. for example $config['api_key'] = "Your API Key"; like this, you can set the api_key in the config file, you can access the config item anywhere in the Codeigniter application.
Tutorial By - J John Hart
In this tutorial, you will learn how to get the users IP address in PHP.
$_SERVER super global variable holds all the information about headers, paths, and script locations. By using this super global variable we can access the users' IP address.
By using $_SERVER['REMOTE_ADDR'] we can get the ip address.
Tutorial By - J John Hart
In this tutorial, you will learn how to get the current Date and Time using Javascript. By using a Javascript Date object you can work with dates. To create a new object with the current date and time use new Date().
Tutorial By - J John Hart
In this tutorial, you will learn how to compare two dates using Javascript. In Javascript, we can compare two dates by converting them into a numeric value by using getTime() function. getTime() function converts dates into a numeric value, once we converted in the numeric value we can directly compare them.
Tutorial By - J John Hart
In this tutorial, you will learn how to compare two dates in PHP. Comparing two dates in PHP is simple when both the dates are in the same format If dates are not in the same format first create them in the same format and compare again.
Tutorial By - J John Hart
In this tutorial, you will learn how to check live username availability using PHP, Ajax, and jQuery. In the application development, you have to check the username or email is already taken or not, at the time when the user enters the username in the text field. Let us understood how to achieve this using example.
Tutorial By - J John Hart
In this tutorial, you will learn how to search live using ajax, jQuery, PHP, and MySQL. Live Search is nothing but when a user searches anything, get the records instant, without hitting any button or refreshing page. Let us understand this using example.
Tutorial By - J John Hart
In this tutorial, you will learn how to copy text from one field to another using jQuery and PHP. Suppose, you have a requirement like where in your form there are mailing address and billing address fields, sometimes for some users both the address are same, at that time user have to fill the same address in both the places, instead of that we can add one checkbox saying billing address same as mailing address, If user checks the checkbox, all the mailing address fields should copy into the billing address.
Tutorial By - J John Hart
In this tutorial, you will learn how to extract or unzip the zip file in PHP. Php provides the ZipArchive class, using that class we can zip the folder or we can unzip the zip files. First, create the object of the ZipArchive class. Using extractTo method we can extract the zip file in the specific folder.
Tutorial By - J John Hart
In this tutorial, you will learn how to create a zip file and download it using PHP. Php provides ZipArchive Class to create the zip file, ZipArchive class has few methods like open(), close(). First, create the object of the ZipArchive class for zip creation. Call the open() method of ZipArchive class and pass the filename with .zip extension like "./myzipfile.zip".
Tutorial By - J John Hart
In this tutorial, you will learn how to get latitude and longitude from zip code using google maps and PHP. A few times in your project you have the requirement like getting the latitude and longitude bypassing the users' zip code. Let us understand how to achieve this using example.
Click on the Live Demo button to see the output.
Tutorial By - J John Hart
How to style the SVG g element, you can use a "foreignObject" with an "SVG" inside it to simulate what you need. The below example demonstrates how to style the SVG element.
Question By - J John Hart
==(double equal to) and ===(triple equal to ) operators are used to checking the equality. 
== operator checks the abstract equality, for example, it checks only values, not the type.
Question By - J John Hart
The difference is that != is for comparing two different types, for example, if you are comparing a variable of integer type with number value and a variable with string type with a number value it will still work.
Question By - J John Hart
\r\n, \n or \r are used as newline characters in the different operating systems.
Question By - J John Hart
FB is not defined error occurs when the function assigned to window.fbAsyncInit is run as soon as the SDK is loaded. Any code that you want to run after the SDK is loaded should be placed within this function and after the call to FB init. or Put the code inside $(document).ready function.
Check below working example Login with Facebook:
Question By - J John Hart
The double arrow operator(=>), is used as an access mechanism for an array. for example, age=>25, age is the key of an array element and the 25 is the value of that key. What is on the left side is the key and what is on the right side is the value. This (=>) arrow operator denotes the array key value.
Tutorial By - J John Hart
Use htmlentities() function to display php tags as plain text in php, htmlentities() function converts characters to HTML entities.
Syntax: htmlentities(string, flags,character-set, double_encode)
Question By - J John Hart
In PHP ", for example, you have the below syntax.

It's a shorthand for
Question By - J John Hart
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