Home > Web Front-end > JS Tutorial > How to read multiple value from web

How to read multiple value from web

王林
Release: 2024-09-04 10:36:05
Original
1037 people have browsed it

How to read multiple value from web

In Node.js, working with data often involves reading from files and inserting those data into databases. Below is how to read JSON data from a file, process it, and format it for a SQL INSERT statement:

  1. Using fs.readFile method to read the contents of a file
  2. Use JSON.parse to convert the JSON string into an object
  3. Iterates over each element in the JSON array using .map(). Inside the .map() function, specific fields from each JSON object are restructured.

Example:
const dataEntries = JSON.parse(await fs.readFile('./filename.json', 'utf-8'))
.map(element => {
const { value1, value2 } = element;
return('${value1}', '${value2}');
});

The above is the detailed content of How to read multiple value from web. For more information, please follow other related articles on the PHP Chinese website!

source:dev.to
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template