You are developing a customer web form that includes the following HTML.
<input id=”txtValue” type=”text”/>
A customer must enter a valid age in the text box prior to submitting the form.
You need to add validation to the control.
Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Explanation:
val
Returnvalue
A string containing the value of the element, or an array of strings if the element can have multiple values