Which command is used to run a React.js application?

What is the final phase of a component's life cycle?

 Which attribute is used to specify that the script is executed when the page has finished parsing? 

What is the correct way to get the current time in JavaScript?

We need to create locally scoped variables to hold a reference to ________.

function first_function()
{
  var first_variable = 10 / "H";
  document.getElementById("demo").innerHTML = Boolean(first_variable);
}

 When do uncaught exceptions generate events? 

Some of the major advantages of React are:

Which of the following are ways to benchmark code?

The method which can be used to create new properties and also be used to modify the attributes of existing properties is _________