PRACTICE A TEST JAVASCRIPT CIW
QUESTIONS AND ANSWERS
You want to include in your form a button labeled Edit, which changes to Save when in
edit mode and changes back to Edit when the form contents are saved. You are calling
a function from the onclick event handler to perform this task. Which of the following is
the correct code for that function? - Correct Answers -if(myButton.value =="Edit") {
myButton.value = "Save";
}
else{
myButton.value = "Edit";
}
Which of the following is a valid variable name in JavaScript? - Correct Answers -sink
Which of the following correctly defines an object with a property called height, a
property called width, and a method called getArea? - Correct Answers -function
objRectangle(height, width) {
this.height = height;
this.width = width;
this.getArea = getArea;
}
Consider the following expression:
x = 25;
y = 10;
Which statement would evaluate to true? - Correct Answers -x > = y;
You work for a mid-size company with a large Web site that has a very wide customer
base. Which is the best method for testing your JavaScript code for this site? - Correct
Answers -Test in various browsers, versions and operating systems.
Consider the following code:
<script type="text/javascript">
var v1 = "Blue";
function f ()
{
, this.v1 = "Green";
alert (this.v1);
}
f();
alert (v1);
</script>
What is the expected result when this script is run in the browser? - Correct Answers -
Two alert boxes, both displaying Green
What is a pop-up blocker? - Correct Answers -A browser-level security feature
Consider the following statement:
Cookies can be used to store passwords so authentication is not necessary for
returning users.
Which of the following choices about this statement is accurate? - Correct Answers -The
statement is true, but this practice poses a security risk.
Which code will correctly declare the calendarYear variable as a date object? - Correct
Answers -var calendarYear = new Date();
Consider the following code:
<html><head>
<script type="text/javascript">
function validatePhone(phoneField) {
var pattern = /[A-Z]/;
if (phoneField.match(pattern) != 0 || phoneField.match(pattern) != null) {
alert("Please enter only numbers in the phone number field"); }else{
document.myForm.submit();
}
</script></head>
<body>
<form name="myForm" action="confirmation.htm" onsubmit="return
validatePhone(this.phoneNumber; return false;)" >
Name: <input type="text" name="userName"/><br/>
Phone Number: <input type="text" name="phoneNumber"/><br/>
<input type="submit" value="Submit"/>
</form></body></html>
What should the pattern be in order to more accurately filter the phone number? -
Correct Answers -var pattern = /[\d-()\W]/g;
Consider the following code:
QUESTIONS AND ANSWERS
You want to include in your form a button labeled Edit, which changes to Save when in
edit mode and changes back to Edit when the form contents are saved. You are calling
a function from the onclick event handler to perform this task. Which of the following is
the correct code for that function? - Correct Answers -if(myButton.value =="Edit") {
myButton.value = "Save";
}
else{
myButton.value = "Edit";
}
Which of the following is a valid variable name in JavaScript? - Correct Answers -sink
Which of the following correctly defines an object with a property called height, a
property called width, and a method called getArea? - Correct Answers -function
objRectangle(height, width) {
this.height = height;
this.width = width;
this.getArea = getArea;
}
Consider the following expression:
x = 25;
y = 10;
Which statement would evaluate to true? - Correct Answers -x > = y;
You work for a mid-size company with a large Web site that has a very wide customer
base. Which is the best method for testing your JavaScript code for this site? - Correct
Answers -Test in various browsers, versions and operating systems.
Consider the following code:
<script type="text/javascript">
var v1 = "Blue";
function f ()
{
, this.v1 = "Green";
alert (this.v1);
}
f();
alert (v1);
</script>
What is the expected result when this script is run in the browser? - Correct Answers -
Two alert boxes, both displaying Green
What is a pop-up blocker? - Correct Answers -A browser-level security feature
Consider the following statement:
Cookies can be used to store passwords so authentication is not necessary for
returning users.
Which of the following choices about this statement is accurate? - Correct Answers -The
statement is true, but this practice poses a security risk.
Which code will correctly declare the calendarYear variable as a date object? - Correct
Answers -var calendarYear = new Date();
Consider the following code:
<html><head>
<script type="text/javascript">
function validatePhone(phoneField) {
var pattern = /[A-Z]/;
if (phoneField.match(pattern) != 0 || phoneField.match(pattern) != null) {
alert("Please enter only numbers in the phone number field"); }else{
document.myForm.submit();
}
</script></head>
<body>
<form name="myForm" action="confirmation.htm" onsubmit="return
validatePhone(this.phoneNumber; return false;)" >
Name: <input type="text" name="userName"/><br/>
Phone Number: <input type="text" name="phoneNumber"/><br/>
<input type="submit" value="Submit"/>
</form></body></html>
What should the pattern be in order to more accurately filter the phone number? -
Correct Answers -var pattern = /[\d-()\W]/g;
Consider the following code:
