How to add an element at the end of an array?

"var" and "function" are :

What are the two incompatible versions of YUI?

How to create an element in the HTML DOM?

How do you specifically execute a command in JavaScript?

What is the output of the following code?

const notUs = ['ant', 'bison', 'camel', 'duck', 'bison'];

console.log(notUs.indexOf('bison'));

What will be the output of the following JavaScript code?

function output(option) 

{ 

    return (option ?  “yes” :  “no”); 

} 

    bool ans=true; 

console.log(output(ans)); 

Predict the output:

function add(fn) {
return function(s) {
var result = s + ' is Best';
fn(result);
}
}

function print(s) {
document.write(s);
}

var g = add(print);
g('Abekus');

What is the output of the following code?

const animals = ['pigs', 'goats', 'sheep'];

const count = animals.push('cows');

console.log(count)

If the user presses “ok” in the dialog box then what will be the output of the following JavaScript code? 

function msg()
{  
   var v= confirm("Are u sure?");  
   if(v==true)
   {  
       alert("yes");  
   }  
   else
   {  
       alert("no");  
   }  
}