To declare a function in JavaScript, which keyword is used?

What will be the output of the following JavaScript code?

var arr=[1,2,3,4];  

var rev=arr.reverse();  

document.writeln(rev);

What is the use of the <noscript> tag in Javascript?

The process by which the browser decides which objects to trigger event handlers on is called ____________

What will be the output of the following JavaScript code?

document.writeln("<br/>navigator.appVersion: "+navigator.appVersion);

The basic purpose of the toLocaleString() method is to:

What will be the output of the following JavaScript code?

function compare()

{ 

  int num=2;  

  char b=2;  

  if(a==b)  

      return true;    

  else

      return false; 

} 

Where are objects allocated in an event loop?

What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
var numbers = [45, 4, 9, 16, 25];
var ans = numbers.reduce(myFunction);
document.getElementById("demo").innerHTML = ans;
function myFunction(total, value, index, array)
{
return total + value;
}
</script>