IT Specialist INF-306 試験概要:

IT Specialist INF-306 試験シラバストピック:

IT Specialist HTML5 Application Development 認定 INF-306 試験問題：

問題 #1
Match each property to its corresponding value for creating the CSS flexible box layout.
Move each property from the list on the left to the correct value on the right.
Note: You will receive partial credit for each correct match.

問題 #2
Which value does the following JavaScript code fragment store in the variable num?
var num = localStorage.length;

A. Potential capacity of local storage
B. Number of bytes available in local storage
C. Maximum length of a character string
D. Number of key-value pairs in local storage

問題 #3
You need to ensure that the value of an input element is a valid 10-digit phone number with no symbols. The input element should initially display all zeroes, but that value should never be stored with the form.
Complete the markup by selecting the correct option from each drop-down list.

問題 #4
You define the Pet class as follows:
class Pet {
constructor(name, breed) {
this.name = name;
this.breed = breed;
this.show = function() {
var text = " < p > Your pet ' s name is " + name + " . The pet ' s breed is " + breed + " . < /p > " ; return text;
};
}
}
You need to derive a Dog class from the Pet class.
Complete the code by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct selection.

問題 #5
You have created custom error messages for a form. When a user attempts to submit the form with invalid data, the data must remain in the form and error messages must be displayed. Which Event property or method should you use?

A. defaultPrevented
B. cancelable
C. preventDefault
D. abort

解説：