[英]Writing into file in nodejs using fs.writefilesync
I am trying to write into a file using fs.writeFileSync('notes.json', originalNoteString) . 我正在尝试使用fs.writeFileSync('notes.json',originalNoteString)写入文件。 When I run the program first time it is appending but when I run the program second time it is not appending again.
当我第一次运行该程序时,它是追加的,但是当我第二次运行该程序时,它是不会追加的。 Can Anyone help me what is happening here.
有人可以帮我这里发生什么吗?
const fs = require('fs');
let orginalNote = {
title: 'sometitle',
body: 'somebody'
}
let originalNoteString = JSON.stringify(orginalNote);
fs.writeFileSync('notes.json', originalNoteString);
let noteString = fs.readFileSync('notes.json');
let note = JSON.parse(noteString);
console.log(typeof note);
console.log(note.title);
The default mode of fs.writeFileSync
is overwrite the complete file. fs.writeFileSync
的默认模式是覆盖整个文件。 As @Bartosz Gościński mentioned you can use appendFileSync
or you set an option in fileWriteSync
to append the new text: 作为@BartoszGościński提到你可以使用
appendFileSync
或者你设置的选项,在fileWriteSync
追加新的文本:
fs.writeFileSync('notes.json', originalNoteString, {flag: 'a'});
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