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To simulate a matrix in JavaScript using a multidimensional array, _____.

If you write the JavaScript code specialInstructions:in front of a series of statements, you create a label for those statements that you can reference elsewhere in the program.

The following JavaScript code will display the message “Please enter your name!” instead of the browser’s native error message when executed in response to a user trying to submit a web form without entering text in the lastName field, which has the required attribute. let lastName = document.getElementById(“lastName”); lastName.setCustomValidity(“Please enter your name!”);

You can use the following JavaScript code to add a browser test for the find() method that will execute the if branch to locate an element in the invoices array if this method is supported by the user’s web browser, but move on to the else branch if the method is not supported: if (invoices.find) {    let firstOverdue = invoices.find(overdue); } else { //alternate code in place of the find() method

You can submit a web form requesting a quote without validating its contents or causing a submit event by _____.

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).

When you discover that several variables are assuming inappropriate values at some point in your long, complex JavaScript program but don’t know where or how this is happening, you should _____.

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 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 _____.

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?