renh09 / yanze.

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React Hooks, useReducer with a demo

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🧪 Tutorials

What is a Promise?

🥃 Documentations

CSS flexbox

axios

moment.js

express.js

NestJs

📎 Problems & Solutions

How to add a placeholder to select element in html #html

In select element we don't have a placeholder attribute but we can add it by using element with disabled, selected and hidden attribute.

<select>
  <option value="" disabled selected hidden>Choose your framework</option>
  <option value="react">React</option>
  <option value="Vue">Vue</option>
  <option value="Angular">Angular</option>
</select>

How to clean up subscriptions in react components using AbortController? #react $useEffect

EventTarget.addEventListener() #javascript

Dynamic Form Fields in React #react

How to Build a Dynamic, Controlled Form with React Hooks (2019) #react

How to validate nested proptypes with React #react

[{ foo: "hello", bar: 3, baz: true }, { foo: "world", bar: 7 }, { foo: ":)", bar: 0, baz: false }];

React.PropTypes.arrayOf(
  React.PropTypes.shape({
    foo: React.PropTypes.string.isRequired,
    bar: React.PropTypes.number.isRequired,
    baz: React.PropTypes.bool
  })
);

How to Undo the Last Commit #git

What Are the Benefits of an Agile Workplace?