Exam 70-480 topic 1 question 9 discussion

Actual exam question from Microsoft's 70-480

Question #: 9
Topic #: 1

You are developing a customer web form that includes the following HTML.
<input id = "txtValue" />
A customer must enter a value in the text box prior to submitting the form.
You need to add validation to the text box control.
Which HTML should you use?

A. <input id="txtValue" type="text" required="required"/>
B. <input id="txtValue" type="text" pattern="[A-Za-z]{3}" />
C. <input id="txtValue" type="required" />
D. <input id="txtValue" type="required" autocomplete="on" />

Show Suggested Answer

Suggested Answer: A 🗳️
Definition and Usage -
The required attribute is a boolean attribute.
When present, it specifies that an input field must be filled out before submitting the form.

Example -
An HTML form with a required input field:
<form action="demo_form.asp">
Username: <input type="text" name="usrname" required />
<input type="submit" />
</form>
Username: <input type="text" name="usrname" required />
Reference: HTML <input> required Attribute
http://www.w3schools.com/tags/att_input_required.asp

by assadk at Oct. 13, 2020, 1:34 p.m.