加载文本文件并查找文件中的字符数 - JavaScript

javascriptweb developmentfront end technologyobject oriented programming更新于 2025/12/5 9:48:17

假设我们有一个 data.txt 文件，它与我们的 NodeJS 文件位于同一目录中。假设该文件的内容是 −

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我们需要编写一个 JavaScript 函数，将此外部文本文件加载到我们的 js 文件中并返回此文件中的字符数。

示例

让我们来编写该函数的代码 −

const fs = require('fs');
const requireFile = async () => {
   const data = fs.readFileSync('./data.txt', 'utf-8');
   const len = data.length;
   return len;
};
requireFile().then(res => console.log(res)).catch(err => {
   console.log('some error occured');
})