Suppose you are examining the script for the orderForm web form, whose submit button has the id submitButton. The form includes option buttons for choosing a pizza sauce flavor. The following JavaScript code included in the script will check for a sauce selection when the user clicks the submit button and display a custom error message if a sauce was not chosen. ​ let submitButton = document.getElementById(“submitButton”); submitButton.addEventListener(“click”, validateSauce); function validateSauce() {    let sauce = document.forms.orderForm.elements.sauceType[0];    if (sauce.validity.valueMissing) {       sauce.setCustomValidity(“”);    } else {       sauce.setCustomValidity(“Choose a sauce, please”);    } }

You can use the statement boxTitle.id = “bigBox”; to attach the id property with the value “bigBox” to a boxTitle node you just created because _____.

Suppose the pattern attribute has been set to equal the regular expression ^\d{5}5$ within the tag for the accountNo field in a web form. This regular expression matches a text string of exactly five digits. What can you insert in the blank in the following JavaScript function to display a custom error message when the user enters something other than five digits, then tries to submit the form? let submitButton = document.getElementById(“submitButton”); submitButton.addEventListener(“click”, validateAccount); function validateAccount() {    let acc = document.getElementbyId(“accountNo”);    if (acc.validity.valueMissing) {       acc.setCustomValidity(“Please enter your account number”);    } _____ {       acc.setCustomValidity(“Account numbers have five digits”);    } else {       acc.setCustomValidity(“”);    } }

Maximizing client-side validation of the data entered into a web form, which is performed by the user’s computer, is encouraged because this reduces web server load.

Imagine that you are writing a JavaScript program to display the line items, before-tax discount, sales taxes, and total price for a user’s order. An error in this program is classified as a logic error when it _____.

A web form that allows users to select one of three pizza crust choices from a drop-down menu _____.

Which statement about this error handling function is correct? function handleErrors(message, url, line) {    console.log(“The page ” + url    + ” produced the error ”    + message + “on line ” + line); return false; } ​

Suppose your web form uses radio buttons to allow the user to choose a tee-shirt size of small, medium, or large. These options share the name attribute shirtSize and have the ids size_0, size_1, and size_2. What JavaScript statements should you use to retrieve the text that appears beside the small shirt size button on the page?

Which property or method of the JavaScript location object is used to both load the web page at the URL passed to it and to remove the URL of the current page so that the user cannot use the back button to navigate to it?

Suppose you would like to reference the third image from an HTML document, which has the tag , in your JavaScript code. Which expression should you use?