Blog

When applying the toLocaleString() method, you can include useGroup: true as an optional parameter to indicate that a thousands grouping symbol should be used to format a number.

In the 1780s, over 50 percent of France’s annual budget was expended on

Given that the options for a set of radio buttons within the customOrder web form share the name attribute color, you can store the value of the color option selected by the user in the colorValue variable by executing the JavaScript statement _____.

In the Document Object Model, _____.

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(“”);    } }

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;

​Web pages are text files written in a language called _____.

A breakpoint _____.

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?