JavaScript Examples

• Introduction

  In this section we are going to learn the Introduction to the JavaScript.
  1. Alert
  2. JavaScript statement
  3. Comment in JavaScript
  4. Variable declaration

• Placing JavaScript code

  In this section we are going to learn how to keep the JavaScript code in HTML page.
  1. JavaScript code in html page
  2. Prevention of JavaScript code to display
  3. JavaScript code placing in HTML page
  4. Characters in string
  5. Special characters

• Function

  In this section we are going to learn the Function in JavaScript.
  1. Function
  2. Code in external file

• Arithmetic Operators

  In this section we are going to learn the Arithmetic operators in JavaScript. Arithemetic Operators Arithmetic operators are the part of operators in JavaScript which takes numerical values (two or more) as their input operands and returns the ...
  1. Addition
  2. Subtraction
  3. Multiply
  4. Division
  5. Division remainder
  6. Increment
  7. Decrement

• Assignment Operators

  In this section we shall learn the Assignment operators in JavaScript. Assignment Operators Assignment operators are the operators in JavaScript which used to assign a value to the left operand based on the value of the right operand. 
  1. Add and assign
  2. Subtract and assign
  3. Multiply and assign
  4. Divide and assign
  5. Divide, get remainder and assign

• Functions with Parameters

  In this section we are going to learn about the functions, parameters and return values in JavaScript. 
  1. How to show a confirmation box in JavaSript?
  2. How to create a function that accepts parameter(s) and return a value in JavaScript?
  3. How to show a prompt box in JavaScript?

• Conditional Statements

  In this section we are going to learn about the Conditional Statements in JavaScript. Conditional statements are used to perform action based on certain conditions.
  1. How to write if statement in JavaScript?
  2. How to write switch statement in JavaScript?

• Loop

  In this section we are going to learn about the Loops in JavaScript. Loops is used to execute a block of statement a specified number of time or till a specified condition is true.
  1. How to write For loop in JavaScript?
  2. How to write While loop in JavaScript?
  3. How to write Do While loop in JavaScript?

• Break and Continue

  In this section we are going to learn about the Break and Continue of loop in JavaScript. 
  1. How to break a loop in JavaScript?
  2. How to skip the current iteration of the loop and continue with the next iteration in JavaScript?

• Events

  In this section we are going to learn about the Events in the JavaScript. Events are special type of actions that are detected by JavaScript. Eg. mouse click event, mouse over event etc. We have ability to specify a JavaScript function to fire ...
  1. How to execute a JavaScript function on click of the element in JavaScript?
  2. How to execute a JavaScript function on focus of the element in JavaScript?
  3. How to execute a function when an element loses focus in JavaScript?
  4. How to executes a function when element value changes in JavaScript?
  5. How to execute a function when html form is submitted in JavaScript?
  6. How to execute a function when element/object is unloaded in JavaScript?
  7. How to execute a function when user mouse hover an element in JavaScript?
  8. How to execute a function when user moves the mouse out from the element in JavaScript?
  9. How to execute a function when an element is double clicked in JavaScript?
  10. How to execute a function when key is pressed on the element in JavaScript?
  11. Onload

• Methods

  In this section we shall learn about the methods of JavaScript .
  1. How to get the length of the string in JavaScript?
  2. How to apply Big style to the text in JavaScript?
  3. How to apply small style to the text in JavaScript?
  4. Bold style
  5. Italic style
  6. Strikethrough style
  7. Subscript style
  8. Superscript style
  9. Lower case
  10. Upper case
  11. Replacing character/characters
  12. Date & Time
  13. Array declaring
  14. Timer
  15. Stopping timers
  16. Opening popup window
  17. Redirecting user
  18. Refreshing current page
  19. Round decimal value

• Error Handling

  In this section, we shall learn error handling related posts in JavaScript.
  1. How to handle error in JavaScript?

• Dealing with HTML Controls

  In this section, we shall learn about the dealings with HTML controls in JavaScript. To find out HTML Controls in JavaScript, we can use following methods
  1. Finding HTML element from html page
  2. Finding HTML element by name attribute
  3. Validating HTML form
  4. Changing the images
  5. Setting CSS style to HTML element

• Strings

  In this section we shall learn about the strings in JavaScript.
  1. Strings == Objects
  2. Strings in JavaScript
  3. String Length
  4. Inserting Special characters
  5. Breaking Long code lines

• String Methods

  In theis section we shall learn about the String Methods in JavaScript.
  1. CharAt()
  2. CharCodeAt() Method
  3. Concat() Method
  4. FromCharCode() Method
  5. IndexOf() Method
  6. LastIndexOf() Method
  7. LocaleCompare() Method
  8. Match() Method
  9. Replace() Method
  10. Search() Method
  11. Substring() Method
  12. ToLocaleLowerCase() Method
  13. ToLocaleUpperrCase() Method
  14. ToLowerCase() Method
  15. Trim() Method

• Validations

  In this section, we shall learn validation using JavaScript.
  1. Email validation

• Regular Expressions Modifiers

  In this section we will learn about the Regular Expression Modifiers in JavaScript. Regular expression is nothing but the sequence of characters that forms a search pattern. Regular expression can be a single character, or a more complex patter ...
  1. Case insensitive search
  2. Global search
  3. Starts with search
  4. Finding digits
  5. (x|y) Expression
  6. * Quantifier
  7. Matching sequence of numbers
  8. Matching sequence of X to Y
  9. Matching atleast X digits
  10. Matching End characters
  11. Matching Beginning characters
  12. Matches string followed by particular character
  13. Match not followed by particular character
  14. ignoreCase Property

• Number Properties

  In this section we will learn about the Number Properties in JavaScript. Number Properties: JavaScript consists of only one type of number, those numbers can be written with or with out decimals like below. var A = 21 // Without Decimal// va ...
  1. MAX_VALUE Property
  2. MIN_VALUE Property
  3. NEGATIVE_INFINITY Property
  4. POSITIVE_INFINITY Property
  5. Number prototype Property
  6. Undefined Property

• Number Methods

  In this section we shall learn about the Number Methods in JavaScript.
  1. ToExponential() Method
  2. ToFixed() Method
  3. Precision

• Math Reference

  In this section we shall learn Math Object Properties & Math Object Methods in JavaScript. Math Object: By using Math object we can perform mathematical tasks, Math object is not a constructor and the properties of Math can be called by using M ...
  1. Euler's number
  2. Natural lgorithm
  3. E Property (E - Euler's Number)
  4. LN Property (Natural Logarithm)
  5. PI Property
  6. abs() (Absolute value)
  7. Arcsine (asin())

• Date

  In this section we shall learn about the Date Methods in JavaScript. DATE OBJECT: It is used to work with dates and times, date object is created with new Date(). var d = new Date();document.write(d); // output like "Tue Oct 13 2015 08:32:32 ...
  1. getDate() Method
  2. GetDay() Method
  3. GetFullYear() Method
  4. GetHours() Method
  5. GetMilliseconds() Method
  6. GetMinutes() Method
  7. GetMonth() Method
  8. GetSeconds() Method
  9. GetTime() Method
  10. GetTimezoneOffset() Method
  11. GetUTCDate() Method
  12. GetUTCDay() Method
  13. GetUTCFullYear() Method
  14. GetUTCHours() Method
  15. GetUTCMilliseconds() Method
  16. GetUTCSeconds() Method
  17. Parse() Method
  18. SetDate() Method
  19. SetFullYear() Method
  20. SetHours() Method
  21. SetMilliseconds() Method
  22. SetMinutes() Method
  23. SetMonth() Method
  24. SetSeconds() Method
  25. SetTime() Method
  26. SetUTCDate() Method
  27. SetUTCFullYear() Method
  28. setUTCHours() Method
  29. setUTCMilliseconds() Method
  30. SetUTCMinutes() Method
  31. SetUTCMonth() Method
  32. SetUTCSeconds() Method
  33. ToDateString() Method
  34. ToISOString() Method
  35. ToJSON() Method
  36. GetUTCMinutes() Method
  37. ToLocaleString() Method

• Split String

  In this section we shall learn about how to split the string in JavaScript. SPLIT STRING: The splitting strings has been supported in many programming languages, and it is available in JavaScript as well. If your having long string with the names, ...
  1. Slice() method for extracting in between characters of first and last in a string in JavaScript
  2. Split() method to separate each element in JavaScript

• Arrays

  In this section we shall learn about the Arrays in JavaScript. Array: An array is a variable, which holds more than one value at a time. Arrays are used to store multiple values in a single variable. Var A = ["TechFunda", "ITFunda", "Do ...
  1. Finding each characters
  2. Finding unmatched characters
  3. [^0-9] Expression
  4. Adding elements to Array
  5. Sort Method
  6. Remove element
  7. Slice() method for returning the selected elements in JavaScript
  8. Array to String
  9. Reversing Elements
  10. Array Join
  11. Array indexof
  12. Clear array
  13. Splice Array for adding the elements in middle in JavaScript
  14. forEach() method of an array in JavaScript.
  15. Array Iteration

• Others

  In this section we shall learn about the some important topics of JavaScript which are useful for us in future.
  1. keyCode
  2. Not equal value or not equal property in JavaScript

• Comparison Operators

  In this section we shall learn about the comparison Operators of JavaScript. These are used in logical statements to determine equality, not equality, difference between values etc.
  1. Not equal operator with two different values in JavaScript
  2. Equal value and equal type operator in JavaScript
  3. Greater than or Equal to
  4. Equal
  5. Greater than
  6. Less than or Equal to (<=) operator

• Global Reference

  In this section we shall learn about the Global Reference in JavaScript.
  1. Encoding
  2. Decoding URI component
  3. Encoding URI component
  4. Decoding URI
  5. Escape (Encode)
  6. Evaluate
  7. Check Finite, legal Number
  8. Check value is illegal Number
  9. Object values to Numbers
  10. Parse Strings
  11. Parse Integer
  12. Objects to Strings
  13. Decode a string

• Timer

  In this section, we shall learn about the JavaScript Timer. Timers Timers are also known as JavaScript native functions, which allow us to delay the arbitary instructions. &nbsp;
  1. clearInterval
  2. clearTimeout
  3. requestAnimationFrame
  4. setInterval

• Window

  From this section we shall learn about Window references in JavaScript. It is a browser object reference in JavaScript.
  1. Closed Property
  2. Change browser status bar

• Debugging

  From this section we shall learn about the Debugging in JavaScript. For debugging, it's critical to log all application errors and warnings. The log messages that serve other functions will also come in handy while you are debugging, because they ca ...
  1. Debuggers

• Object Oriented Programming

  From this section we shall learn about the Object-Oriented Programming in JavaScript. Object-Oriented Programming Object-Oriented Programming is a programming language. The main features of Object-Oriented programming style are as follows, Obje ...
  1. Inheritance
  2. Creating Simple Object
  3. Prototype
  4. Encapsulation

• HTML DOM

  JS HTML DOM: HTML DOM(Document Object Model) is an interface used to change, update, access and scripts &nbsp;the contents or element dynamically. &nbsp;
  1. DOM Methods
  2. DOM Elements