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JavaScript Answers

How to convert int to float with JavaScript?

Sometimes, we want to convert int to float with JavaScript.

In this article, we’ll look at how to convert int to float with JavaScript.

How to convert int to float with JavaScript?

To convert int to float with JavaScript, we can use the toFixed method.

For instance, we write

const n = (4).toFixed(2);

to call toFixed with 2 to return 4 as a string rounded to 2 decimal places.

Conclusion

To convert int to float with JavaScript, we can use the toFixed method.

Categories
JavaScript Answers

How to fix Uncaught TypeError: data.push is not a function with JavaScript?

Sometimes, we want to fix Uncaught TypeError: data.push is not a function with JavaScript.

In this article, we’ll look at how to fix Uncaught TypeError: data.push is not a function with JavaScript.

How to fix Uncaught TypeError: data.push is not a function with JavaScript?

To fix Uncaught TypeError: data.push is not a function with JavaScript, we should make sure data is an array.

For instance, we write

const data = [
  {
    name: "ananta",
    age: "15",
    country: "Atlanta",
  },
];

data.push({ name: "Tony Montana", age: "99" });
data.push({ country: "IN" });

to declare the data array.

And then we call data.push to append new entries into data.

Conclusion

To fix Uncaught TypeError: data.push is not a function with JavaScript, we should make sure data is an array.

Categories
JavaScript Answers

How to fix the “Received: serializes to the same string” error with Jest and JavaScript?

Sometimes, we want to fix the "Received: serializes to the same string" error with Jest and JavaScript.

In this article, we’ll look at how to fix the "Received: serializes to the same string" error with Jest and JavaScript.

How to fix the "Received: serializes to the same string" error with Jest and JavaScript?

To fix the "Received: serializes to the same string" error with Jest and JavaScript, we can use the toStrictEqual method.

For instance, we write

expect(array).toStrictEqual(["more than one", "more than one"]);

to check if array is exactly the same as ["more than one", "more than one"] by using a deep equality check.

Conclusion

To fix the "Received: serializes to the same string" error with Jest and JavaScript, we can use the toStrictEqual method.

Categories
React Answers

How to use anchors with React Router?

Sometimes, we want to use anchors with React Router.

In this article, we’ll look at how to use anchors with React Router.

How to use anchors with React Router?

To use anchors with React Router, we can use the react-router-hash-link package.

We install it by running

npm install --save react-router-hash-link

Then we use it by writing

import { HashLink as Link } from "react-router-hash-link";

<Link to="home-page#section-three">Section three</Link>;

to use the HashLink component with the to prop set to a URL with the anchor.

Conclusion

To use anchors with React Router, we can use the react-router-hash-link package.

Categories
React Answers

How to share states between components using the useState hook in React?

Sometimes, we want to share states between components using the useState hook in React.

In this article, we’ll look at how to share states between components using the useState hook in React.

How to share states between components using the useState hook in React?

To share states between components using the useState hook in React, we can lift the state up to the component that contains both components.

For instance, we write

const Ancestor = () => {
  const [count, setCount] = useState(1);

  return (
    <>
      <DescendantA count={count} onCountChange={setCount} />
      <DescendantB count={count} onCountChange={setCount} />
    </>
  );
};

to add the count state and set that as the value of the count prop of the DescendantA and DescendantB components.

Conclusion

To share states between components using the useState hook in React, we can lift the state up to the component that contains both components.