Reading-Notes

My journal for Code Fellows

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Object-Oriented Programming, HTML Tables

Chapter 6 Tables

• <table> tag is used to create a table
• <tr> indicate each row
• <td> represents each cell
• <th> represents the heading of a colum or row
• Long Table have three elements to help with detail
  • <thead> heading of long table should be contained within
  • <tbody> should contain the body
  • <tfoot> should contain the footer

Chapter 3 Functions, Methods, and Objects

String Objects

• .length returns number of characters in strings
• toUpperCase() and toLowerCase() changes string to uppercase and lowercase respectively
• charAt() returns character found at given index
• indexOf() returns index number of given character
• lastIndexOf() returns index of last instance of given character
• substring() returns characters between two indexes
• split() splits string with given character each time its found within
• trim() removes whitespace from start and end
• replace() takes a value that needs to be found and replaces it with given value

Number Objects

• isNan() checks if value is a number
• toFixed() rounds to specified decimal place and returns string
• toPrecision() rounds to total number of places
• toExponential() returns strings of number in exponential notation

Math Objects

• Math.PI returns pi
• Math.round() rounds to the nearest integer
• Math.sqrt(n) returns square root of given number
• Math.ceil() rounds number up
• Math.floor() rounds number down
• Math.random() generates random number between 0 and 1

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