Which of the following statements is true regarding Cross Origin Resource Sharing (CORS)?

What will the following JavaScript code do?let toys = ;function mystery() {return 0.5 – Math.random();}toys.sort(mystery);

The JavaScript expression 36– returns the value 34.

The new Promise() object constructor contains a command block called an executor that includes _____.

Every JavaScript object has a constructor function that acts as a template for all the properties and methods associated with the object’s class, and a prototype, which can be thought of as a machine to instantiate objects.

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 does the following JavaScript code accomplish?let surveyForm = window.open(“”);let mainHeading = document.createElement(“h1”);mainHeading.textContent = “Your Experience”;surveyForm.document.body.appendChild(mainHeading);

When the userName field of the login web form contains invalid data entered by the user, both of the following JavaScript commands will return false:Command 1: document.forms.login.elements.userName.checkValidity()Command 2: document.forms.login.checkValidity()

How would you rewrite the following JavaScript function using arrow function syntax?function totalWithTax(price1, price2) {return (price1 + price2) * 1.09;}

What should you place in the blank to complete the following JavaScript statements if you want to store the Boolean true value in wordCheck if the string stored in text contains the word “phenomenon”?let regx = /phenomenon/;let wordCheck = _____;