Creating calendars date-time pickers in Reactjs
Teresia Wachira
Introduction Adding a calendar or time input component has been made easy in React through the react date picker component. Date-time pickers(DTPs) help solve the confusion that occurs in date…
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ERROR send and transfer are only available for objects of type address payable, not address [solidity]
Saad Mushtaq
In Solidity, you may encounter this error, “send and transfer are only available for objects of type address payable, not address” when you try to run function calls like .transfer()…
Can’t bind to ‘ngModel’ since it isn’t a known property of ‘input’
Sadok Jbenyeni
If you are facing this error in your Angular application, “Can’t bind to ‘ngModel’ since it isn’t a known property of ‘input’” then here we will discuss its meaning and…
Creating infinite loading & Scrolling in ReactJs
Introduction Many applications use the infinite scroll functionality to display large number of records. For example, when you browse through the products on ecommerce like Amazon.com, you either get the…
Error: Can’t render headers after they are sent to the client [nodejs]
Imran Alam
The “Error: Can’t render headers after they are sent to the client” is a very common error in Node.js. This error is caused by the fact that Node.js buffers the…
Image Editing and Cropping in ReactJs
If you have an application where a profile section is created, you most probably also asking for user’s photo for it. But different users have different phones and you end…
How to upload a file in Angular?
Uploading files in Angular requires using FormData() api from Javascript. We need to create a form and append data in its formdata variable. We have tried to make the method…
How to embed Youtube videos using ReactJs
Introduction In React it is easy to embed and play YouTube videos in your application. You can do it in two ways. One includes using the Iframe tag while the…
Svelte – Conditions and For Loops – If, Else, Each and Await blocks
Akash Mittal
In this article we will learn how to use conditions and loops in Svelte. We will use if, else, elseif conditions along with for & each loop blocks. We will…
Svelte – Creating a CRUD application
In this article we will learn how to do operations like create, read, update and delete by developing a CRUD application in Svelte. These are the most basic operations which…
Using Redux with React – A quick reference guide
In this article, we will learn about using Redux with React. We won’t engage much into theory and quickly set it up. This is a reference guide to get you…
Svelte – How to upload a file?
In order to upload in file in Svelte, we can use javascript FormData() api. First we will create a form with file input field and append the value to the…
Svelte – Calling parent function from child and child function from parent
In previous article we learned about props and how to declare function props and read only props. In this article we will learn how to call parent function from child…
Svelte – Learn props, set default value & pass as object in component
In javascript frameworks, props is an important concept. Without them it’s not easy to pass data from one component to another. So, the primary use of props is to pass…
Svelte Error – Variable is not updating on UI after changes
As we learned in our previous article that variables are reactive in nature. It means they update the UI with changes in their values. But this statement is half correct.…
Svelte – Reactive variables and statements ($:)
Variable assignment in Svelte is reactive in nature. It means if the new value is assigned to a variable then the change will be immediately reflected to the UI. But…
Svelte – Creating multiple components and adding CSS styles
In this article we will learn how to create multiple components in Svelte and import them. We will also see how to declare css styles and learn about their behavior…
How to parse date string in Golang?
There is no doubt that Golang creators had their ways of dealing with problems of older languages. They took care of most of the issues which are often neglected. Parsing…
Golang: Check if key exists in map / dictionary
Golang is a type safe language which sets 0 as the value of undefined variables automatically. So, if you are checking the existence of a key in map, you can’t…
Svelte: Using Javascript variables for displaying data / attributes in html
In this article we will learn an important concept which is the foundation for props in Svelte. Javascript variables are reactive in Svelte. It means that if you update the…