React

• Basics of React, Virtual DOM, etc.
• Latest React version and updates
• React hooks and examples
• Angular vs React which one to choose?
• PWA
• Service Workers ? Usage
• Creating new PWA project what all i will need to do?

Browser

• What is CORS?
• How to set CORS on the client or server side
• diff CORS MODE?
• How to handle and avoid CORS errors
• Where are cookies stored, and what is the purpose of cookies?
• different cookie properties like HTTPOnly, Secure, etc. (You can find all properties in the - application tab.)
• How to pass cookies in an API call, and how can I pass all cookies at once in a request?
• What if we manipulate cookies and change the domain name?
• Chrome Browser Latest feature
• when we click on link & open new instance of chrome can we transfer current session info to new window? (Latest chrome feature)

Javascript

• Hoisting behavior
• code snippets

console.log('start');
const promise1 = new Promise((resolve, reject) => {
console.log(1)
})
console.log('end');

function parent() {
    var hoisted = "I'm a variable";
    function hoisted() {
      return "I'm a function";
     }
    return hoisted();
}
console.log(parent());

function foo() {
  var bar = function() {
    return 3;
  };
  return bar();
  var bar = function() {
    return 8;
  };
}
console.log(foo())