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Hi, if we want to open, close or show, not show some DOM element we can do this with a react local state, one handle method, a ternary condition and finally the CSS clas…

Hi, so the first thing that we need to start is creating one test suite and one test case. So, we are going to use Behavior Driven Development (BDD  is a branch …

Hi, the next step is install enzyme into our project so we need to run this command in the terminal: npm i --save-dev enzyme enzyme-adapter-react-16 …

Hi, we need to open our project "todos" in the code editor and go to todo/src/components/ and create the file called todo.test.js we are going to create the unit test co…

Hi, the first thing that we need is prepare our environment for test react applications.  So we need to install Node.JS, so go to https://nodejs.org/en/ en downl…

Using Javascript language; create an input that receive only numbers and depends of the number that the user insert then create a button(s) element in the page. …