51.
The word “document” mainly refers to

52.
Which object is the main entry point to all client-side JavaScript features and APIs?

53.
Which identifier is used to represent a web browser window or frame?

54.
Which property in the Window object is used to refer to a Location object?

55.
Which Window object method is used to display message in a dialog box?

56.
The setTimeout() method is used to

57.
Which of the following is a global object?

58.
When will the window property come into play?

59.
Which is the property that represents the content displayed in the window?

60.
How to pick a document element based on the value of its id attribute?