Category: JavaScript

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JavaScript Answers

How to Check if Two JavaScript Dates Have the Same Date Info?

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Sometimes, we want to check if two JavaScript dates have the same date info.

In this article, we’ll look at how to check if two JavaScript dates have the same date info.

Check if Two JavaScript Dates Have the Same Date Info

To check if two JavaScript dates have the same date info, we can use the valueOf or getTime method to return the timestamp value of both dates, which are numbers.

Then we can compare the returned timestamp numbers with === .

For instance, we can write:

const a = new Date(1995, 11, 17);  
const b = new Date(1995, 11, 17);  
console.log(a.getTime() === b.getTime())

Then the console log logs true since a and b have the same timestamp number.

Also, we can use valueOf by writing:

const a = new Date(1995, 11, 17);  
const b = new Date(1995, 11, 17);  
console.log(a.valueOf() === b.valueOf())

And we get the same result as the previous example.

Conclusion

To check if two JavaScript dates have the same date info, we can use the valueOf or getTime method to return the timestamp value of both dates, which are numbers.

Then we can compare the returned timestamp numbers with === .

Categories
React Answers

How to install React Bootstrap?

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To install React Bootstrap, we run

npm install react-bootstrap bootstrap

Then in index.js, we add

import 'bootstrap/dist/css/bootstrap.min.css';

to import the CSS.

And in our components, we can add

import { Navbar, Nav, Button } from "react-bootstrap";

to import the components we need.

Categories
React Native Answers

How to use GIFs in rReact Native?

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To use GIFs in rReact Native, we add a line to android/app/build.gradle.

For instance, in android/app/build.gradle, we add

dependencies {
  //  ...
  implementation 'com.facebook.fresco:animated-gif:2.5.0'
  //  ...
}

so we can add GIFs into our Android React Native app.

Categories
React Answers

How to use font awesome in a React app?

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To use react-fontawesome with React, we run

npm i react-fontawesome

to install the icon packages.

Then we use it by writing

const React = require("react");
const FontAwesome = require("react-fontawesome");

const MyComponent = () => {
  return (
    <FontAwesome
      className="super-crazy-colors"
      name="rocket"
      size="2x"
      spin
      style={{ textShadow: "0 1px 0 rgba(0, 0, 0, 0.1)" }}
    />
  );
};

to add the FontAwesome component into the MyComponent React component.

Categories
React Answers

How to use if else inside JSX in React?

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To use if else inside JSX in React, we can add them in a function.

For instance, we write

const MyComponent = () => {
  return (
    <div>
      {(() => {
        if (someCase) {
          return <div>someCase</div>;
        } else if (otherCase) {
          return <div>otherCase</div>;
        } else {
          return <div>catch all</div>;
        }
      })()}
    </div>
  );
};

to add the if-else statements in the function.

We call the function immediately so we render the returned value.