russnode 常用内置模块
path
1.获取路径的信息
js
const filepath = '/User/why/abc.txt';
console.log(path.dirname(filepath)); // /User/why
console.log(path.basename(filepath)); // abc.txt
console.log(path.extname(filepath)); // .txt2.join直接拼接。
js
const basepath = '../User/jing';
const filename = './abc.txt';
const filepath1 = path.join(basepath, filename);
console.log(filepath1); // ../User/jing/abc.txt3.resolve 会判断拼接的路径字符串中,是否有以/或./或../开头的路径。
js
const basepath2 = '/User/jingjing';
// const filename2 = '/jing/abc.txt'; // /jing/abc.txt
// const filename2 = './jing/abc.txt'; // /User/jingjing/jing/abc.txt
// const filename2 = 'jing/abc.txt'; // /User/jingjing/jing/abc.txt
const filename2 = '../jing/abc.txt'; // /User/jing/abc.txt
const result = path.resolve(basepath2, filename2);
console.log(result);