Which is a more efficient code snippet ?

Code 1 :

for(var num=10;num>=1;num--)
{
           document.writeln(num);
}

Code 2 :

var num=10;
while(num>=1)
{
       document.writeln(num);
       num++;
}

A statement block is a

When an empty statement is encountered, a JavaScript interpreter

The “var” and “function” are

Consider the following statements

switch(expression)
{
    statements
}

In the above switch syntax, the expression is compared with the case labels using which of the following operator(s) ?

Consider the following statements

var count = 0;
while (count < 10) 
{
     console.log(count);
     count++;
}

In the above code snippet, what happens?

The enumeration order becomes implementation dependent and non-interoperable if :

Using _______ statement is how you test for a specific condition.

Which of the following is the structure of an if statement?

<script type="text/javascript">
x=4+"4";
document.write(x);
</script> 

What is the output.?