/Debugging-Advanced-Calculator

Debugging Advanced Calculator

Primary LanguageHTML

  1. How can you add a class name to addBtn?(Do some research on it)

    const addBtn = document.getElementById("add-btn");

  • All of the above
  1. The value of total will be?

const sum = (p, q) => parseInt(p) + q; const total = sum("h", 1);

  • NAN
  1. What is the output?

const marks= 60; const resubmit = -5; console.log(!(marks > 0 || resubmit > 0));

  • False
  1. How will you find out the numbers of properties present in an object person?

const person = { name: "hero", id: 101, address: "BD", postalCode: 40321 };

  • console.log(Object.keys(person).length);

  1. What will be the output?

    const animals = ['cat', 'dog', 'rat']; console.log(animals.includes('Cat'));

  • False
  1. If you call the unique function and pass the array what will you get?

const unique = array => array.indexOf(“21”); const array = [2,3,4,5,2];

  • -1

  1. What will be the return of add(“2”,3)?

    const add =(para1 , para2) => para2 + para1

  • 32
  1. If you run the above code, which type of error will you get?

const b=6 b=6 console.log(b);

  • Assignment Error
  1. What is a regular expression ?
  • A sequesnce of characters that specifies a search pattern
  1. What would be the output?

const colors = {mango: 'green', grapes: 'black', organe: 'yellow'}; console.log(colors[grapes])

  • Uncaught Referrer Error