HTTP URLs can only be sent over the Internet using the ASCII character-set, which often contain characters outside the ASCII set. So these unsafe characters must be replaced with a % followed by two hexadecimal digits. Each time you send data to a server, you need to consider security. HTML forms are by …
Whichever HTTP method you choose, the server receives a string that will be parsed in order to get the data as a list of key/value pairs. The way you access this list depends on the development platform you use and on any specific frameworks you may be using with it. …
HTTP requests are never displayed to the user (if you want to see them, you need to use tools such as the Firefox Network Monitor or the Chrome Developer Tools). As an example, your form data will be shown as follows in the Chrome Network tab. After submitting the form: Press F12 Select …
This attribute defines how data is sent. The HTTP protocol provides several ways to perform a request; HTML form data can be transmitted via a number of different ones, the most common of which are the GET method and the POST method. To understand the difference between those two methods, let’s step back and examine how …
The action attribute This attribute defines where the data gets sent. Its value must be a valid URL. If this attribute isn’t provided, the data will be sent to the URL of the page containing the form. In this example, the data is sent to an absolute URL — http://foo.com: <form action=”http://foo.com”> Here, …
The web is based on a very basic client/server architecture that can be summarized as follows: a client (usually a Web browser) sends a request to a server (most of the time a web server like Apache, Nginx, IIS, Tomcat, etc.), using the HTTP protocol. The server answers the request using the same protocol. On …
An HTML Form is made of one or more widgets. Those widgets can be text fields (single line or multi-line), select boxes, buttons, check-boxes, or radio buttons. Most of the time those widgets are paired with a label that describes their purpose — properly implemented labels are able to clearly …
The POST method is a little different. It’s the method the browser uses to talk to the server when asking for a response that takes into account the data provided in the body of the HTTP request: “Hey server, take a look at this data and send me back an appropriate result.” …
The GET method is the method used by the browser to ask the server to send back a given resource: “Hey server, I want to get this resource.” In this case, the browser sends an empty body. Because the body is empty, if a form is sent using this method the data …