Q. What is negative infinity ?
Q. What is BOM?
BOM stands for Browser Object Model. It gives interaction with Browser. The default object of Browser is Window.
Q. What is DOM ?
DOM stands for Document Object Model. A Document object represents to html documents.It can be used to access html content and its changes.
Q. What are undeclared and undefined variables?
Undeclared variable are those variable which don’t exists and not declared in a program. If the program try to get the variable value ,then it gives runtime error .
Undefined variable are those variable which are declared in a program but have not assign any value. If program try to read the value of variable it gives undefined value.
A prompt box is a box which allow the user to enter a input by providing text box.Box will be provided to enter a text or numeric value.
- Single line comment . (represented by // double forward slash)
- Multi line comment. (represented by slash with asterisk symbol as /* comment here */)
//body of function
- Primitive Data Types
- Non-primitive Data Types