Node.js process.chdir() 方法
process.chdir() 方法是进程模块的内置应用程序编程接口,用于更改当前工作目录。
句法:
process.chdir( directory )
参数:此方法接受上面提到的单个参数,如下所述:
- directory:必填参数,指定要更改当前工作目录的目录的路径。
返回值:此方法成功时不返回任何值,但如果更改目录失败,指定“没有这样的文件或目录”,则抛出异常。
下面的例子说明了在 Node.js 中process.chdir() 方法的使用:
示例 1:
// Node.js program to demonstrate the
// process.chdir() Method
// Include process module
const process = require('process');
try {
// Change the directory
process.chdir('../os');
console.log("directory has successfully been changed");
} catch (err) {
// Printing error if occurs
console.error("error while changing directory");
}
输出:
directory has successfully been changed
示例 2:
// Node.js program to demonstrate the
// process.chdir() Method
// Include process module
const process = require('process');
// Printing current directory
console.log("current working directory: "
+ process.cwd());
try {
// Change the directory
process.chdir('../os');
console.log("working directory after "
+ "changing: " + process.cwd());
} catch (err) {
// Printing error if occurs
console.error("error occured while "
+ "changing directory: " + err);
}
输出:
current working directory: C:\nodejs\g\process
working directory after changing: C:\nodejs\g\os
注意:上面的程序将使用node filename.js
命令编译和运行。
参考: https://nodejs.org/api/process.html#process_process_chdir_directory