For example, the browser might present the message "The entered text doesn't match the required pattern." followed by your specified title. That's because the title may be displayed or spoken as part of a validation error message. That is, it should explain what format the data should take on, rather than any other information. If you do, the title must describe the pattern. It's advisable to use the title attribute along with pattern.
As a result, we wind up with a validation which says "make sure this resembles a valid e-mail address, and if it is, make sure it's also a address." However, the browser runs both the standard e-mail address filter and our custom pattern against the specified text. Note that this is not even close to an adequate filter for valid e-mail addresses it would allow things such as " (note the leading space) or neither of which is valid. We set pattern to This simple regular expression requests a string that consists of at least one character of any kind, then an followed by the domain name "". But we want to go one step farther: we want to make sure that the e-mail address is in fact in the form " This is where we'll use pattern. If we left things at that, we would at least be validating on legitimate e-mail addresses. If the text in the input box isn't an e-mail address, you'll get an error message that looks something like this: This is in addition to the fact that using type email will validate the text to ensure that it's formatted like an e-mail address. This string demonstrates both that an e-mail address should be entered, and suggests that it should be a corporate account. The required attribute is specified, making it mandatory that a valid e-mail address be provided.Īn appropriate placeholder is provided- demonstrate what constitutes a valid entry. Its size and maxlength attributes are both set to 64 in order to show room for 64 characters worth of e-mail address, and to limit the number of characters actually entered to a maximum of 64. Let's take a closer look at the e-mail address entry box. Each text entry box has a associated with it to let the user know what's expected of them. Our contains one of type email for the user's e-mail address, a to enter their message for IT into, and an of type "submit", which creates a button to submit the form.
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