JavaScript Certification Test UPDATED
Actual Exam Questions and CORRECT
Answers
Which of the following escape sequences will print the backslash character? - CORRECT
ANSWER✔✔- \\
Which of the following characters matches the start of a line in a regular expression -
CORRECT ANSWER✔✔- ^
What is the main role of JavaScript in an AJAX transaction? - CORRECT ANSWER✔✔- To
request XML or plain text data from a web server
Which property is used to add CSS styles to elements in a Web Page? - CORRECT
ANSWER✔✔- HTMLElement.style
What is a bug in the JavaScript code? - CORRECT ANSWER✔✔- An error in the code
Which of the following is not a valid property? - CORRECT ANSWER✔✔-
coords.timestamp
What readyState value specifies that the response header has been received, but the message
body is yet to be received? - CORRECT ANSWER✔✔- 3
Which of the following casting rules is incorrect when concatenating? (true is a Boolean
value) - CORRECT ANSWER✔✔- 9 + true equals "9true"
Which of the following statements is true of semicolons in JavaScript? - CORRECT
ANSWER✔✔- Semicolons are essential while combining separate statements in a line
Which statement is false in reference of XSS attacks? - CORRECT ANSWER✔✔- They
cannot be performed through emails or mail clients
, Sarah has created a JavaScript library, and now she wants to include it in her document.
Which of the following statements follows the correct syntax to link the library in her
document? - CORRECT ANSWER✔✔- <script type="text/javascript"
src="library.js"></script>
Which of the following information is not a part of the cookie header? - CORRECT
ANSWER✔✔- expires = date
Which of the following is not true of JavaScript plug-in? - CORRECT ANSWER✔✔- Plug-
ins cannot be used without the library they depend upon; Every pre-made script is a library
How can a cookie be deleted using JavaScript? - CORRECT ANSWER✔✔- By setting a
passed expiration date
Which event is triggered on the <select> element when the selection is modified? -
CORRECT ANSWER✔✔- onchange
Which of the following methods will remove all the data from the storage? - CORRECT
ANSWER✔✔- localStorage.clear();
Which of the following initializes the HTTP request in an AJAX transaction? - CORRECT
ANSWER✔✔- The open() method
What is a named memory block that serves as containers for a value called? - CORRECT
ANSWER✔✔- Operator
Variable
Which of the following solutions will not help in preventing XSS attacks? - CORRECT
ANSWER✔✔- Storing login credentials in cookies for security
Which of the following characters is used as the escape character in JavaScript? - CORRECT
ANSWER✔✔- \
Actual Exam Questions and CORRECT
Answers
Which of the following escape sequences will print the backslash character? - CORRECT
ANSWER✔✔- \\
Which of the following characters matches the start of a line in a regular expression -
CORRECT ANSWER✔✔- ^
What is the main role of JavaScript in an AJAX transaction? - CORRECT ANSWER✔✔- To
request XML or plain text data from a web server
Which property is used to add CSS styles to elements in a Web Page? - CORRECT
ANSWER✔✔- HTMLElement.style
What is a bug in the JavaScript code? - CORRECT ANSWER✔✔- An error in the code
Which of the following is not a valid property? - CORRECT ANSWER✔✔-
coords.timestamp
What readyState value specifies that the response header has been received, but the message
body is yet to be received? - CORRECT ANSWER✔✔- 3
Which of the following casting rules is incorrect when concatenating? (true is a Boolean
value) - CORRECT ANSWER✔✔- 9 + true equals "9true"
Which of the following statements is true of semicolons in JavaScript? - CORRECT
ANSWER✔✔- Semicolons are essential while combining separate statements in a line
Which statement is false in reference of XSS attacks? - CORRECT ANSWER✔✔- They
cannot be performed through emails or mail clients
, Sarah has created a JavaScript library, and now she wants to include it in her document.
Which of the following statements follows the correct syntax to link the library in her
document? - CORRECT ANSWER✔✔- <script type="text/javascript"
src="library.js"></script>
Which of the following information is not a part of the cookie header? - CORRECT
ANSWER✔✔- expires = date
Which of the following is not true of JavaScript plug-in? - CORRECT ANSWER✔✔- Plug-
ins cannot be used without the library they depend upon; Every pre-made script is a library
How can a cookie be deleted using JavaScript? - CORRECT ANSWER✔✔- By setting a
passed expiration date
Which event is triggered on the <select> element when the selection is modified? -
CORRECT ANSWER✔✔- onchange
Which of the following methods will remove all the data from the storage? - CORRECT
ANSWER✔✔- localStorage.clear();
Which of the following initializes the HTTP request in an AJAX transaction? - CORRECT
ANSWER✔✔- The open() method
What is a named memory block that serves as containers for a value called? - CORRECT
ANSWER✔✔- Operator
Variable
Which of the following solutions will not help in preventing XSS attacks? - CORRECT
ANSWER✔✔- Storing login credentials in cookies for security
Which of the following characters is used as the escape character in JavaScript? - CORRECT
ANSWER✔✔- \
