How to Enable Annotations in PDF.JS
Annotations data, such as links, can be shown in the rendered PDF canvas using getAnnotations and PDFJS.AnnotationLayer.render methods.
Getting POST Parameters in Node.js
POST parameters can be read with the querystring module. In case of a multipart/form-data POST request, external modules are required.
Browser Rendering Optimization - Free Course Offered by Google
Google is offering a free video course on Browser Rendering Optimization. This course is about changing the way you approach performance issues for web applications.
Getting URL Parameters in Node.js
You can get url parameters in Node by importing the built-in "url" module. This module gives access to the URL and URLSearchParams objects.
How to Enable Text Selection in PDF.JS
By default PDF.JS does not enable text selection in rendered PDFs. To enable text selection, another method needs to be called that renders the PDF text in a separate text layer.
Routing in Node.js (without framework)
Frameworks such as ExpressJS makes routing quite easy. But initially it is important to understand how routing works in Node.js, and not to jump to ExpressJS straightaway.
Creating a Simple HTML Editor with Javascript
This tutorial shows how you can create a simple WYSIWYG HTML editor with Javascript, somewhat like a mini version of the famous TinyMCE HTML editor.
Javascript - Previewing PDFs During Upload
The very useful PDF.JS library makes it possible to show a preview of the PDF before uploading to server.
Javascript - Previewing Images During Upload
Showing a preview of the image before being uploaded to server provides a good user experience. You can show a preview image using the URL.createObjectURL method on the selected file.
Typewriter Animation with Pure CSS
This tutorial discusses the concepts behind achieving typewriter effect with CSS, with no Javascript involved.
The Useful <time> HTML Element
The time tag defines date and time in a HTML document. This tag is helpful in making the markup more structured, so that it becomes easier for machines to interpret the page.
Manipulation of HTML Select Element with Javascript
This tutorial explains how you can perform common operations on select element with vanilla Javascript - adding/deleting options or getting/setting the selected options.
Pure Javascript - Replacing an Element
replaceChild and replaceWith methods can be used to replace an element with pure vanilla Javascript.
How to Change URL Parameters with Javascript
This tutorial explains how you can change url parameters - edit, add or delete, using the URL and URLSearchParams objects.
Some Less Known CSS Properties for Form Input Fields
This post briefly discusses some less popular CSS properties for form inputs, for example tab-index, caret-color etc. You can use them to make your form even more effective.
Copying to Clipboard with Javascript
The feature of copying something to the OS clipboard is quite useful for the end user. In a web page it can be implemented with the Selection API.
How to Get URL Parameters with Javascript
The URL and URLSearchParams objects makes it very easy to get parameters in a url.
How to Write a REST API Class for Node.js
While implementing an API with Node.js, it is better to write it as a class, create a module, and import the module in the main Node.js script. This tutorial describes general coding guidelines how you can create such a class.
Javascript Promises - Understanding Chaining and Error Handling
Javascript Promises are quite simple to start with, but confusions arise when Promises are chained. This tutorial focuses on the return values of then() and catch(), which are crucial to understanding the process.
Typing and Deleting Effect with Javascript
Typing effect is a good way to grab user attention. To implement typing effect, you can start by showing the first character initially; after a few milliseconds you can show the first 2 characters; and so on till the whole sentence has been shown.