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!”);

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);

The following JavaScript code will display the message “You can vote!” if the age variable’s value is 40, but will display “When you are 18, you can vote!” if the age variable’s value is 4. if (age >= 18) { window.alert(“You can vote!”); } else { window.alert(“When you are 18, you can vote!”); } ​

Which JavaScript expression references the tenth element in an HTML document with the “menuChoice” name attribute?

Imagine you want to write JavaScript code to display a customized message depending on the value of the dessert variable. Which series of words belongs in the blanks (one word per blank)? _____ (dessert) { _____ “Ice cream”: alert(“We all scream for ice cream!”); break; _____ “Apple pie”: alert(“Full of baked cinnamon-sweet fruit!”); break; _____ “Brownies”: alert(“A rich and gooey chocolate treat!”); break; _____ alert(dessert + ” is always an excellent choice!”); } ​

The use of global variables is strongly discouraged for applications managed by a team of programmers because, in comparison, the scope of local variables is well-contained and therefore more easily tracked.

Convert the Binary Number below to Decimal. 11000101

What JavaScript code should be placed in the blank to write JanuaryFebruaryMarch to a web page? let firstQuarter = [“January”, “February”, “March”]; for (_____; i++) {    document.write(firstQuarter[i] + “”); }

Suppose you have written the following function. function salesTax(price, rate) {    let tax = price * rate;    return tax; { How can you make it an anonymous function?

Suppose you have defined an array containing days of the week, and realize that you left off Saturday. Which JavaScript statement should you use to add Saturday at the end of the array while ensuring the array’s length will be equal to 7?