LinkedIn | Frontend | Bangalore | JAN 2024

Round 1

Questions:

• Event capturing, bubbling & delegation

• Accessibility

• Output based

  // Problem
  const Foo = function(a) {
    function bar() {
      return a;
    }
    this.baz = function() {
      return a;
    };
  };
  
  Foo.prototype.biz = function() {
    return a;
  };
  
  const f = new Foo(7);
  
  f.bar(); // ?
  f.baz(); // ?
  f.biz(); // ?

  Follow up: How to make the first and third also return 7?

• Write fibonacci. 1, 1, 2, 3, 5, 8, 13, 21, 34...

  • Follow-up:

  let memoizedFib = memoize(fib)
  memoizedFib(1000) ==> result is computed
  memoizedFib(1000) ==> no re-computation, the previous result has been cached and this call simply returns the value.

  Write a generalised memoize fn.

• Write basic HTML, JS and CSS for this. (JS Handlers and Questions around Perf)