UseContext hook provides a way to pass data through the component tree without having to pass props down manually at every level. It helps maintaining cleaner code. In other words – it provides a way to share values between components without having to explicitly pass a prop through every level of the tree.
Read More React Hooks – useContext hook exampleReact Hooks – useReducer hook example
UseReducer is an alternative to useState. It works better when you have complex state logic that involves multiple sub-values (e.g. if your state is multidimensional object) or when the next state depends on the previous one. UseReducer hook accepts a reducer of type (state, action) => newState, and returns the current state paired with a dispatch method:
React Hooks – useState hook example
Hooks are a new functionality of React, thanks to which we can “hook into” React features, which makes writing applications easier. First hook that I want to show you is called useState and it is a hook that allows you to use state in a functional component (before hooks you could not use states in functional components, which is why they were called stateless components. Now the name has been changed to functional components).
Read More React Hooks – useState hook exampleCSS text-decoration property and new styles 2019
New styles, tags, functionalities – this is what tiggers like best 🙂 In this post I will show you how to style text using the text-decoration tag and what new styles for lines (underlines, overlines) are available from 2019
Read More CSS text-decoration property and new styles 2019Styling chosen links on site, e.g only links to PDF file
In previous post: styling lists with pseudo-classes I described how to change the color of active, clicked or hovered links. Now I will show you how to change the style of selected links, e.g. only those that lead to PDF files.
Read More Styling chosen links on site, e.g only links to PDF fileStyling links with css
Standard appearance of hyperlinks on a website depends on the browser. Each browser can display links and their variants (with different pseudo-classes) in a different way.
Usually we want to set our own styles so to display links in the same way in any browser.
Links can have different states, and each of this states can be styled. This states are called pseudo-classes.
Read More Styling links with css
Basic git commands
You can perform git commands for example in:
– cmd console (widnows start -> cmd. It should oppened Command Prompt app. To go to the root directory, enter cd \ . Next enter cd + path to directory with your project, e.g. cd Users\ Joanna\Desktop\my-project
– git bash console, which you can get from https://git-scm.com/downloads . After installing console go to directory with your project, right click and select: Git Bash Here (then console opens).
If you have your console with path to your project, you can enter first command (step one).
Read More Basic git commandsRem, em – length units in CSS
I must admit that I rarely used such units of length as rem and em so far. I usually used pixels (px), because somehow it was easier for me to associate what size a given element will have.
The rem and em units, however, have one advantage over pixels – they can be set in correlation to parent font size (em) or root font size, which most often is <html> elemet (rem). This gives the ability to manipulate sizes for many elements at once. The default root font value is usually 16px (but it depends on the browser).
Read More Rem, em – length units in CSSResponsive images in HTML5, using srcset
Images often are problematic while we creating web page . Displaying larger image on larger screen is a better for user experience, but displaying large photo on small screen, e.g. on a phone, may unnecessarily delay page loading.
Therefore, a good solution is to “serve” images with different sizes and weight for different screens.
Read More Responsive images in HTML5, using srcsetAuto resize image to div size
Sometimes we want that picture on page shrinks when browser window shrins. This can be easily achieved by using a short css entry.
Read More Auto resize image to div size
