javascript - 在js中提取文件名和扩展名

Question

需要 JavaScript 中的方法来提取文件名和扩展名。

例子:/vagrant/modules/americabuy/tranzilaNotifications/class/../../../a_tranzila/log/tranzila_2018-01-09_08-58-47.json

返回数组:["tranzila_2018-01-09_08-58-47","json"]

Answer 1

在 Node.js 中

var path = require('path');

function getFilenameAndExtension(pathfilename){
    return [path.parse(pathfilename).name, path.parse(pathfilename).ext];
}

在 JavaScript 中

function getFilenameAndExtension(pathfilename){

  var filenameextension = pathfilename.replace(/^.*[\\\/]/, '');
  var filename = filenameextension.substring(0, filenameextension.lastIndexOf('.'));
  var ext = filenameextension.split('.').pop();
  
  return [filename, ext];

}

结果

getFilenameAndExtension("/vagrant/modules/americabuy/tranzilaNotifications/class/../../../a_tranzila/log/tranzila_2018-01-09_08-58-47.json");
//Result -> ["tranzila_2018-01-09_08-58-47", "json"]

如果文件名有多个“.”，它也有效。例如:

getFilenameAndExtension("../log/tranzila.2018-01-09.08-58-47.json");
// Result: ["tranzila.2018-01-09.08-58-47", "json"]