How many standard WebSocket events are available?

How do we create and preload an image object in JavaScript?

When will the window property come into play?

What is the purpose of form control elements in the HTML DOM?

What will be the output of the following code?

const module = {

  x: 42,

  getX: function() {

    return this.x;

  }

}

const unboundGetX = module.getX;

console.log(unboundGetX());

What does it indicate when the type attribute of the navigation object is set to 2?

Which of the following statements about AJAX is false?

What is the output of the following code?

const array1 = [100, 's', new Date('18 jan 2020 14:12:00 UTC')];

const locString = array1.toLocaleString('en', {timeZone: "UTC"});

console.log(locString);

What will be the output of the following JavaScript code?

var scope = "global scope";

function checkscope() 
{
    var scope = "local scope"; 
    function f() 
    { 
        return scope; 
    }
    return f;
}

function chemistryelement()  
{  
   var chem=document.getElementsByName("elements");  
   alert("Total Elements:"+chem.length);  
}  
<form>  
    <input type="radio" name="elements" value="Sulphur">  
    <input type="radio" name="elements" value="Oxygen">

     <input type="radio" name="elements" value="Neon">  
    <input type="button" onclick="chemistryelement()" value="Total Elements">  
</form>