What is the output of the following code?

var $$ = "8";
var $ = 2;

console.log($+$$);

Python decorators are supported on:

Which of the following jQuery selectors can select all elements with the class "demo"?

The object can be associated to a key on a node by which of the following method?

What is the purpose of the Node object property ownerDocument?

What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
document.getElementById("demo").innerHTML = Math.sqrt(49);
</script>

What is the purpose of garbage collection?

Which property of the datepicker widget is used to add the button panel at the bottom of the calendar which is displayed using the datepicker widget?

 To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the ____________ 

What is the purpose of the Dojo framework?