2. HowTo
3. JavaScript Howtos

JavaScript String

• Get Last Character of a String in JavaScript
• Convert a String Into a Date in JavaScript
• Convert Array to String in JavaScript
• Check String Equality in JavaScript
• Convert Object to String in JavaScript
• Check if Sring Is a Number in JavaScript
• Convert Integer to String in JavaScript
• Add Character to String in JavaScript
• Convert String Into Array in JavaScript
• Remove Last Character From String in JavaScript
• Split String Into Array in JavaScript
• JavaScript Append to String
• JavaScript String Encryption and Decryption
• JavaScript Insert Variable Into String
• Convert a String Into a Number in JavaScript
• Write a Multiline String in JavaScript
• Check if a String Contains Substring in JavaScript
• Case Insensitive String Comparison in JavaScript
• Remove Substring From String in JavaScript
• Remove a Character From a String in JavaScript
• Do String Interpolation in JavaScript
• Generate Random String in JavaScript
• Remove Spaces From a String in JavaScript
• Convert String to Lower Case in JavaScript
• JavaScript Remove the First Character From String
• Check for an Empty String in JavaScript
• Convert a String to Boolean in JavaScript
• Capitalize the First Letter of a String in JavaScript

JavaScript DateTime

• Get Name of Month in JavaScript
• Get Current Time in JavaScript
• Validate a Date in JavaScript
• Convert UTC to Local Time in JavaScript
• JavaScript Get Current Date Time
• Get Week Number of the Year in JavaScript
• Initialize JavaScript Date to a Particular Time Zone
• Get Current Year in JavaScript
• Compare Two Dates in JavaScript

JavaScript Array

• Check if Array Contains Value in JavaScript
• Convert Array to String in JavaScript
• Remove First Element From an Array in JavaScript
• Search Objects From an Array in JavaScript
• Convert Arguments to an Array in JavaScript
• Update Array Values in JavaScript
• Load CSV to array in JavaScript
• Sort Array of Object by Property in JavaScript
• Convert Array to JSON in JavaScript
• Find Index of Object in JavaScript Array
• JavaScript Array vs Object Declaration
• Clone an Array in JavaScript
• Convert String Into Array in JavaScript
• Remove Object From an Array in JavaScript
• Split String Into Array in JavaScript
• Split an Array Into Chunks in JavaScript
• Remove Last Element From Array in JavaScript
• Find Max/Min Value in JavaScript Array
• JavaScript Pick Random Value From Array
• JavaScript Reverse Array
• JavaScript Stack and Queue
• JavaScript Unique Array
• JavaScript Append Array to Another
• JavaScript Sort Array of Objects Alphabetically
• Convert Array to Object in JavaScript
• JavaScript Average Function
• Add Object to Array in JavaScript
• Remove Item From Array by Value in JavaScript
• JavaScript Remove Index From Array
• Sum of an Array in JavaScript
• Append Elements in an Array in JavaScript
• JavaScript 2D Array
• JavaScript Declare Empty Array
• Remove Duplicates From an Array in JavaScript
• Randomize or Shuffle an Array in JavaScript
• Store Key-Value Array in JavaScript
• Compare Two Arrays in JavaScript
• JavaScript Get the Last Item in an Array
• Empty an Array in JavaScript

JavaScript Hex

• Convert ASCII to Hexadecimal in JavaScript
• JavaScript Convert ASCII Code to Hex Code

JavaScript Event

• Call Multiple JavaScript Functions in Onclick Event
• Window Resize Event in JavaScript

JavaScript Number

• Convert a Number to Binary Format in JavaScript
• Format a Number in JavaScript
• Format a Number as a Currency String in JavaScript
• Round a Number to 2 Decimal Places in JavaScript
• Generate Random Number in a Specified Range in JavaScript
• JavaScript Add Commas to Number
• Generate a Random Number Between Two Numbers in JavaScript

JavaScript Binary

• Convert a Number to Binary Format in JavaScript

JavaScript CSS

• Change CSS Property Using JavaScript

JavaScript Timer

• Countdown Timer in JavaScript

JavaScript Redirect

• Redirect to a Webpage in JavaScript

JavaScript Encoding

• URL Encoding in JavaScript
• Encode and Decode a String to Base64 in JavaScript

JavaScript Object

• Search Objects From an Array in JavaScript
• Convert Object to String in JavaScript
• Convert JavaScript Object to JSON
• Compare Objects in JavaScript
• Find Index of Object in JavaScript Array
• Check if a Value Is Object in JavaScript
• JavaScript Array vs Object Declaration
• Append Values to Object in JavaScript
• Merge Objects in Javasript
• Sum of Array of Objects in JavaScript
• Convert Array to Object in JavaScript
• Add Properties to JavaScript Object
• Deep Clone an Object in JavaScript
• Check if Key Exists in Object in JavaScript
• Remove Property From Object in JavaScript
• Filter Object in JavaScript
• Check if Object Is Empty in JavaScript
• Get the Length of Object in JavaScript
• Loop Through a JavaScript Object
• Get key of a JavaScript Object

JavaScript Onload

• Execute the JavaScript Code After the Webpage Loads

JavaScript Referencing

• Whether JavaScript Is a Pass by Reference or a Pass by Value Type

JavaScript File

• Write Data to a File in JavaScript
• Read Text File in JavaScript
• Read File Line by Line in JavaScript
• Download a File Using JavaScript
• Get file name extensions in JavaScript

JavaScript Element

• Get Height of the div Element in JavaScript

JavaScript Variable

• Access the Session Variable in JavaScript
• Get Type of a Variable in JavaScript
• Check if a Variable Is Undefined in JavaScript
• Check if a Variable Is Not Null in JavaScript
• Declare Global Variables in JavaScript
• Static Variables in JavaScript
• Check if Variable Exists in JavaScript

JavaScript DOM

• Create Table Using JavaScript
• JavaScript Move Element
• JavaScript Append Data to Div
• JavaScript Hide/Show Elements
• JavaScript DOM Ready
• Enable/Disable Input Button Using JavaScript
• Check if Element Exists in DOM in JavaScript

JavaScript Text

• Copy Text to Clipboard in JavaScript
• JavaScript Change Text

JavaScript Console

• Print to Console in JavaScript

JavaScript Debugging

• Print to Console in JavaScript

JavaScript Time

• Implement a Sleep Function in JavaScript
• Get the Timestamp in JavaScript
• Wait for X Seconds in JavaScript

JavaScript String

• Reverse a String in JavaScript

JavaScript Loop

• Terminate a forEach Loop Using Exceptions in JavaScript
• JavaScript Loop Through an Array
• Nested for Loops JavaScript

JavaScript Value

• Get Element Value Using JavaScript

JavaScript Attribute

• Get Element by Attribute in JavaScript

JavaScript Constant

• Constants in JavaScript

JavaScript Attributes

• Get Values of Data Attributes in JavaScript

JavaScript Mouseover

• Mouseover Event in JavaScript

JavaScript PDF

• Convert HTML to PDF in JavaScript

JavaScript Excel

• Export HTML Table to Excel using JavaScript

JavaScript JSON

• Load JSON file in JavaScript
• Convert JavaScript Object to JSON
• Convert JSON to Object in JavaScript
• JavaScript Pretty Print JSON
• Using array of JSON objects in JavaScript

JavaScript CSV

• Parse CSV file in JavaScript
• Export Array to CSV in JavaScript

JavaScript Function

• Nested Functions in JavaScript
• Call a JavaScript Function Into an HTML Body
• Exit JavaScript Function

JavaScript Dialog

• Alert Yes No With the Confirm Function in JavaScript

JavaScript Input

• Change Input Value in JavaScript
• Get Input Value in JavaScript

JavaScript Color

• Change the Background Color in JavaScript
• Convert RGB to HEX in JavaScript

JavaScript Background

• Change the Background Color in JavaScript

JavaScript Boolean

• Compare Objects in JavaScript
• Convert a String to Boolean in JavaScript

JavaScript Button

• Toggle a Button in JavaScript

JavaScript Class

• Toggle Class With JavaScript
• JavaScript Add Class to Element

JavaScript Date

• Convert Date to UTC in JavaScript
• Get the Timezone in JavaScript
• Format a JavaScript Date
• Convert Timestamp to Date in JavaScript
• Add Days to Current Date in JavaScript

JSON Object

• Convert JSON to Object in JavaScript

JavaScript Operator

• JavaScript === vs ==
• JavaScript Ternary Conditional Operator
• Modulo Operator(%) in JavaScript

JavaScript Browser

• JavaScript Detects Mobile Browser

JavaScript GUID

• JavaScript GUID

JavaScript Form

• Prevent Form Submission JavaScript
• JavaScript Submit Form on Click
• Submit Form Using JavaScript

JavaScript Mail

• mailto in JavaScript

JavaScript Fibonacci

• JavaScript Fibonacci

JavaScript Char

• Convert Character Code to ASCII Code in JavaScript

JavaScript Math

• Integer Division in JavaScript
• Exponents in JavaScript
• Generate Random Number in a Specified Range in JavaScript
• Square a Number in JavaScript

JavaScript Image

• JavaScript Preload Image
• Change Image Source JavaScript

JavaScript Enum

• JavaScript Enums

JavaScript Table

• JavaScript Sort HTML Table

JavaScript Integer

• Convert a Float Number to Int in JavaScript
• Convert a String Into a Number in JavaScript

JavaScript Float

• Convert a Float Number to Int in JavaScript

JavaScript POST

• JavaScript POST

JavaScript Format

• Format a Number as a Currency String in JavaScript

JavaScript Audio

• Play Audio Files in JavaScript

JavaScript Algorithm

• Bubble Sort in JavaScript

JavaScript Data Structure

• Simulate a Struct in JavaScript

JavaScript Datetime

• Subtract Dates in JavaScript

JavScript Array

• Flatten an Array in JavaScript

JavaScript Filter

• Filter Object in JavaScript

JavaScript Promises

• Wait for a Function to Finish in JavaScript

Java String

• Check if a Variable Is String in JavaScript

Java Array

• Merge Two Arrays Without Any Duplicates in JavaScript

JavaScript Map

• Store Key-Value Array in JavaScript