js读取txt内容

const xhr = new XMLHttpRequest();
xhr.open('GET', 'example.txt', true);
xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
        const txtContent = xhr.responseText;
        console.log(txtContent);
    }
};
xhr.send();

fetch('example.txt')
    .then(response => {
        if (!response.ok) {
            throw new Error('Network response was not ok');
        }
        return response.text();
    })
    .then(txtContent => {
        console.log(txtContent);
    })
    .catch(error => {
        console.error('There has been a problem with your fetch operation:', error);
    });

const fs = require('fs');

fs.readFile('example.txt', 'utf8', (err, data) => {
    if (err) {
        console.error(err);
        return;
    }
    console.log(data);
});