Which actions can be done using the JavaScript browser console?

A. Run code that’s not related to the page

B. View and change the DOM of the page

C. Display a report showing the performance of a page

D. Change the DOM and the JavaScript code of the page

E. View and change security cookies

Refer to the code below:

< html >

< body >

< div id= " logo " > Hello Logo! < /div >

< button id= " test " > Click me < /button >

< /body >

< script >

function printMessage(event) {

console.log( ' This is a test message ' );

}

let el = document.getElementById( ' test ' );

el.addEventListener( " click " , printMessage, false);

< /script >

< /html >

Which action should be done?

A. Add event.removeEventListener(); to window.onload event handler

B. Add event.removeEventListener(); to printMessage function

C. Add event.stopPropagation(); to printMessage function

D. Add event.stopPropagation(); to window.onload event handler

Why does second have access to variable a?

A. Inner function ' s scope

B. Outer function ' s scope

C. Prototype Chain

D. Hoisting

Given a value, which two options can a developer use to detect if the value is NaN?

A. value === Number.NaN

B. value == NaN

C. isNaN(value)

D. Object.is(value, NaN)

A developer publishes a new version of a package with new features that do not break backward compatibility. The previous version number was 1.1.3.

Following semantic versioning formats, what should the new package version number be?

A. 1.2.3

B. 1.1.4

C. 2.0.0

D. 1.2.0