Reading-Notes

Class 07 Summary

Tables In HTML

What is a Table?

Table is a grid format to represent information and arrange data into rows and columns.

Basic Table Structure

(table) element used to create table. (tr) tag indicatesthe start of each row. (td) tag represent the cells of table. (th) tag represent the heading for a column or arow. (thead) the heading of the table. (tbody) the body of the table. (tfoot) the footer of the table.

• example:

---

Object

• Update the value of properties : use dot or Square brackets.

• delete a property : use the delete keyword.

• example: hotel.name=’Park’; Or hotel[‘name’]=’Park’;

delete hotel.name; Or hotel[‘name’]=’ ‘;

• Constructor Function : to create instances of the object.
• The new keyword followed by a call of the function creates a new object.
• The properties of each object are the arguments of the function.

• Example: var quayHotel = new Hotel (‘Quay’,40,25);

• (This) is a keyword used in object and functions.he value of this, when used in an object, is the object itself.

• In a constructor function (this) does not have a value. The value of this will become the new object when a new object is created.

• Variables: has one key and one value.

• Arrays:store multiple information seperated by comma.

• Arrays are Objects (a special type of object).

• groups of Built-In Object:

1. String
2. Number
3. Math
4. Date

• Each character in a string is automatically given a number, called an index number. Index numbers always start at zero.

• Simple Data Type :

1. String
2. Number
3. Boolean
4. Undefined
5. Null

• Complex Data Type:

1. Object.

• Numbers USED TERMS: 1.An integer is a whole number (not a fraction). 2.A real number is a number that can contain a fractional part. 3.A floating point number is a real number that uses decimals to represent a fraction 4.Scientific notation

Thank You Sukina AbuHammad