更新时间:2023-12-03 12:58:28
var fs = require('fs')
fs.readFile(filename, 'utf8', function(err, data)
{
if (err)
{
// check and handle err
}
// data is the file contents as a single unified string
// .split('\n') splits it at each new-line character and all splits are aggregated into an array (i.e. turns it into an array of lines)
// .slice(1) returns a view into that array starting at the second entry from the front (i.e. the first element, but slice is zero-indexed so the "first" is really the "second")
// .join() takes that array and re-concatenates it into a string
var linesExceptFirst = data.split('\n').slice(1).join('\n');
fs.writeFile(filename, linesExceptFirst);
});