Javascript用子字符串搜索匹配两个数组

Question

您好，非常感谢您为此提供的所有帮助。我有两个数组，第一个是没有扩展名的文件名，第二个包含扩展名。我需要匹配文件名并输出匹配项的第三个数组。

ArrayFileName = [one, two, three, three, five, six, ten]
ArrayFileNameWExt = [one.txt, two.txt, three.txt, ten.wmf, eleven.cgm]

输出数组为

NewArrayFileNameWExt = [one.txt, two.txt, three.txt, ten.wmf]

感谢大家的帮助。 玛克辛

Answer 1

这可以通过 filter() 轻松完成在第二个数组上并使用正则表达式来测试每个 filename 是否包含在第一个数组中:

ArrayFileName = [
  "one", "two", "three", "three", "five", "six", "ten", "dot.dot"
];

ArrayFileNameWExt = [
  "one.txt",
  "two.txt",
  "three.txt",
  "ten.wmf",
  "eleven.cgm",
  "dot.dot.csv",
  "foo",
  ".",
  ""
];

let res = ArrayFileNameWExt.filter(x =>
{
    let matchs = x.match(/(.*)\.(.*)$/);
    return ArrayFileName.includes(matchs && matchs[1]);
});

console.log(res);