JavaScript Code Snippets

Javascript Course

Some JavaScript functions and code snippets useful for Programmers and JS scripts.

• jsSHA - SHA Hashes and HMAC in JavaScript
  - jsSHA JavaScript library for the SHA hash family: SHA-1, SHA-224, SHA3-224, SHA-256, SHA3-256, SHA-384, SHA3-384, SHA-512, SHA3-512, SHAKE128, SHAKE25
• Properties and Methods of the window object
  - Lists with properties and methods of the window object in JavaScript. Codes and examples.
• List with JavaScript events
  - List with some of the most used JavaScript events, with code and examples.
• Properties and Methods of the Form elements
  - List with some of the properties and methods related to the form elements.
• Properties and Methods of the HTML elements in JavaScript
  - Lists with properties and methods of the HTML elements used as objects in JS, with codes and examples.
• Properties and Methods of the document object
  - Lists with properties and methods of the document object in JS, with codes and examples.
• Methods of the Date object
  - List with methods of the Date object, useful to work with date and time values in JS scripts
• Methods of the Array object in JS
  - List with methods of the Array object. Callback functions for arrays , JS code and examples
• Methods of the String object in JS
  - List and examples with JavaScript methods for the String object to work with strings in JS
• Show a message if JavaScript disabled or Ad-Blocker
  - HTML, CSS and JS code to show a message to visitor if JavaScript is disabled or an ad blocker blocks the Ads.
• Generate random numbers in JavaScript
  - JavaScript functions to generate random numbers with various criterias, range and digits.
• Moving html element to a random direction
  - Simple JavaScript function to move a html element to a random direction in page
• Get position and size of Div in page
  - JavaScript function to get the top, left position and width, height sizes of html Div in page
• Show Google Map image with Geolocation JavaScript object
  - JavaScript code snippet to show Google Map image with data from Geolocation JS object
• Get Duration of Audio /Video file before Upload
  - JavaScript code to Get Duration of Audio and Video file before Upload, add duration into an input field in form
• Refresh page if window width changes from a device size to other
  - JavaScript Code to Refresh the page if window width changes from a device size to other
• Shuffle / Randomize Array in JavaScript
  - Simple JavaScript function to shuffle, randomize array items
• Zodiac Signs JavaScript code
  - Simple function to get the Zodiac sign in JavaScript, code snippets
• JavaScript strip_tags and stripslashes
  - JavaScript strip_tags with allowable tags, and stripslashes, equivalent to PHP functions
• array_map and array_search in JavaScript
  - array.map and array.indexOf in JavaScript, equivalent to PHP the array_map and array_searh functions
• JavaScript PHP is_ functions to test data type
  - JavaScript PHP functions test data type, is_string, is_numeric, is_int, is_float, is_array, is_object, is_bool, is_null
• JavaScript trim, rtrim and ltrim
  - JavaScript trim, rtrim and ltrim Removes whitespace, or other character, from the beginning and end of a string
• Difference between two Dates - Time and Date
  - JavaScript function to Get the difference between two Dates - Time and Date, days, hours, minutes, seconds
• Get Lower, Higher and Closest Number in JavaScript
  - JavaScript function to get the lower, higher, and closest number between a number and an array, or object with numbers
• Get the value of the selected /checked checkboxes in a form
  - JavaScript function that returns an array with values of the selected, checked checkboxes in a form
• Replace JavaScript variable name from string with its value
  - Replace JavaScript variable name, object property, array element from string with their value, string template
• Delete and Add CSS class
  - Simple JavaScript function to Delete and Add CSS class in HTML, code snippet
• Split an alphanumeric string into Array in JavaScript
  - Function to Split an alphanumeric string into array, JavaScript code snippets
• JavaScript base64 encode decode
  - JavaScript object to encode, decode data with MIME base64, code snippet
• MD5 hash string in JavaScript
  - Function to get the MD5 hash of a string in JavaScript, 32-character hexadecimal number
• SHA1 Encrypt data in JavaScript
  - Function to get the SHA1 encrypted data, hash string in JavaScript, 40-character string
• SHA256 Encrypt hash in JavaScript
  - Function to get the SHA256 encrypted hash string in JavaScript, 64-character hexadecimal value
• SHA512 Encrypt hash in JavaScript
  - Function to get the SHA512 encrypted hash string in JavaScript, 128-character hexadecimal value
• Get search data from URL address in JavaScript
  - A JavaScript function that can be used to Get search data from URL address in JavaScript scripts
• Get Domain Name and other Data from URL
  - Get Root Domain Name and other Data from URL, in JavaScript, protocol, port, page path, file name, search part, hash
• Disable button and Enable it after specified time
  - Disable button and automatically Enable it, with JavaScript, after a specified time
• Highlight Images on click
  - Highlight Images on click, add CSS style with JavaScript, border and background to image when click on it
• Recursive function to create Multi-Level Menu in JavaScript
  - Recursive function to create Multi-Level Menu in JavaScript, build horizontal and vertical dropdown menu
• Show and Hide HTML elements
  - Show and Hide HTML elements, simple JavaScript function to show and hide multiple HTML elements
• Select the Content of HTML Element
  - Select the Content of HTML Element, select input form field, div, text content
• Convert BBCode to HTML and HTML to BBCode with JavaScript
  - JS script to Convert BBCode to HTML and HTML to BBCode, with JavaScript
• Add Tag to Selected Text in textarea with JavaScript
  - JavaScript function that can add HTML, or BBCode Tag, to selected text in textarea
• Detect when ScrollBar reaches the bottom of the page
  - JavaScript function to Detect when ScrollBar reaches the bottom of the page, code-snippet
• Get the Height and Width of web Page and browser Window
  - JavaScript code snippets. Get the sizes, total height, of the page content, and browser window
• Clear Canvas Context
  - JavaScript function to clear canvas context, removes drawings and text from canvas element
• Add Text in Canvas from Input text field, as it is Typed
  - JavaScript code snippets, Add Text in Canvas from Input text field, as it is Typed
• Keep the first Nr IMG tags, Remove all the others
  - JavaScript code snippet, function to Keep the first Nr IMG tags, Removes all the others
• Delete multiple consecutive characters and Split long words in JavaScript
  - JavaScript function to delete multiple consecutive characters and split long words from string.
• jQuery Drag and Drop Rows between two similar Tables
  - Drag and Drop Rows between two similar Tables with jQuery UI. JavaScript code snippets
• Creating Tabs Effect with JavaScript
  - HTML, CSS, JavaScript code to Create Tabs Effect. Displays last active tab after page refresh
• Follow the mouse cursor with a DIV inside a Parent
  - How to make a Div to follow the mouse cursor inside the borders of a parent element, using JavaScript