What JavaScript statements should you place in the blank in order to retrieve the value of the user’s selection from the sauceFlavor drop-down menu in your web form and assign it to the sauceValue variable? let orderForm = document.forms.orderForm; let sauceFlavor = orderForm.elements.sauceFlavor;

What does the following JavaScript code do when the web page loads? window.addEventListener(“load”, function() {    let survey = document.forms.survey;    let lastName = orderForm.elements.lastName;    lastName.focus(); });

Imagine that you are working on a web form. After writing the JavaScript statement let pinNo = document.getElementById(“pinNo”); what statement can you add to assign a Boolean value of true to isValid if the value in the pinNo field is matched by the regular expression /^\d{4}$/ or assign a value of false to isValid if it isn’t?

Suppose you are writing an anonymous JavaScript function that will run when your web page loads, and you want to include a statement that will cause a selection list in a web form to become active and ready for data entry. Which method should you apply in this statement?

To format a number stored in the variable x using the local standards for displaying numeric values on a user’s computer, you can use the JavaScript statement _____.

Suppose you want to add the following statement to your JavaScript code in order to help you trace an error. What belongs in the blank? _____(“totalPrice = ” + totalPrice);

Which JavaScript method will create a node list by selecting all the paragraph element nodes belonging to the narrative class?

The only way to run a JavaScript function upon an event such as a page loading or a user clicking a page element is to enclose the function within an event handler or event listener.

Suppose you see the following lists of functions in the call stack window of your browser’s debugger as you are examining your JavaScript code. What does this call stack information indicate? siftFlour prepareBatter bakeCupcakes

You can correct an error in a JavaScript program by creating an event listener that runs a function, for instance by adding window.addEventListener(“error”, handleErrors).