

Since there are no validation checks on the input fields, this data is passed directly to our view function and the following output is logged to the console:Īdd a Stock: Stock Symbol (required, 1-5 uppercase letters) Number of Shares (required) Purchase Price ($) (required) Navigate to the form in your browser and enter the following data: Field To illustrate how valuable form validation can be, let's attempt to send some invalid data. If the data passes the validation checks, it will be sent to the server for processing.
So, when the form is submitted, the web browser checks that the data is in the correct format based on the specified constraints.
#RADIO IO STOCK CODE#
Here are some key validation checks that can be defined in the HTML code for a form:
#RADIO IO STOCK PASSWORD#
"Your password needs to be between 8 and 30 characters long and contain one uppercase letter, one symbol, and two numbers.".You've probably seen examples of form validation in practice on different websites: The goal of form validation is to ensure that the data is in the correct format. Stock Symbol: Number of Shares: Purchase Price ($): Form Validationįorm validation is a set of checks to constrain the data input by the user. In HTML, the typical approach for defining an input is to create a element to define a description of what to enter and then to have a separate element for collecting the input:

In the above example, we set the method to POST and since we left off the action attribute, the form submission will be sent to the same URL that's used to serve up the form in the browser.

In this chapter, we'll implement a form for submitting the following data for a stock: Typically, forms allow the user to enter data, which is sent to the server to be processed. If you've never worked with HTML or forms before, there are some great resources available from the Mozilla Developer Network (MDN):įorms (also referred to as 'web forms' or 'HTML forms') provide a way for the user to interact with a web app. This chapter looks at how forms are implemented and validated in HTML.
#RADIO IO STOCK HOW TO#
This chapter looks at how to create forms for acquiring user input data.
