JavaScript is a client side powerful scripting language mainly used to enhance the user interaction with the webpage. In this tutorial, we will see the Keycode values of each and every character on the keyboard. What are the KeyCodes in JavaScript? Key code or Char code is the Unicode character code of the key that triggered when keyboard key is pressed. Keycode for Navigation Keys backspace 8tab 9enter 13shift 16ctrl 17alt … Read more
Spamming is a very common issue for all websites. Every web developer faces to the spamming problem and implements captcha verification. Google Recaptcha is one of the best options to get free from spam. In this tutorial, we are going to see how to use Recaptcha in PHP or How to use Google reCaptcha code … Read more
As a web developer, you must know about host header injection so that you can secure your web application from malicious attacks. In this tutorial, We are going to see what is host header injection and how to prevent web apps from host header injection. What is Host Header or HTTP Host Header? Host header … Read more
When you create a form with an input box for getting mobile number or amount then you must restrict the user to enter an only numeric value. In this article, I am going to show you how to allow the user to enter only numbers in the input box. To allow only numeric value in … Read more
The !important property is CSS is used to give more importance than normal CSS property. In css , !important mean “this is important”. Using !important property means ignore all rule and apply it. In jQuery, We use css() methods to set or returns style properties to the selected elements. In this tutorial, I am going … Read more
When we work on web services it is generally required to send json data via POST method. In this tutorial we will see how to post json data with PHP curl. It is very easy to post data in json form using header Content-Type: application/json in CURLOPT_HTTPHEADER. Here we put data in PHP array and … Read more