Practice A Test JavaScript Ciw questions and answers

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
answer ✔✔if(myButton.value =="Edit") {

myButton.value = "Save";

}

else{

myButton.value = "Edit";

}



Which of the following is a valid variable name in JavaScript? - correct answer ✔✔sink



Which of the following correctly defines an object with a property called height, a property called width,
and a method called getArea? - correct answer ✔✔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 answer ✔✔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 answer ✔✔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 answer ✔✔Two alert boxes,
both displaying Green



What is a pop-up blocker? - correct answer ✔✔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 answer ✔✔The statement is
true, but this practice poses a security risk.