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Javascript – Regex Comparison not working as expected

const columnDateIndex = [
  { path: "2023|Jan 2023" },
  { path: "2023|Feb 2023" },
  { path: "2023|Mar 2023" },
  { path: "2023|Apr 2023" },
  { path: "2023|May 2023" },
  { path: "2023|Jun 2023" },
  { path: "2023|Jul 2023" },
  { path: "2023|Aug 2023" },
  { path: "2023|Sep 2023" },
  { path: "2023|Oct 2023" },
  { path: "2023|Nov 2023" },
  { path: "2023|Dec 2023" },
  { path: "2024|Jan 2024" },
  { path: "2024|Feb 2024" },
  { path: "2024|Mar 2024" },
  { path: "2024|Apr 2024" },
  { path: "2024|May 2024" },
  { path: "2024|Jun 2024" },
  { path: "2024|Jul 2024" },
  { path: "2024|Aug 2024" },
  { path: "2024|Sep 2024" },
  { path: "2024|Oct 2024" },
  { path: "2024|Nov 2024" },
  { path: "2024|Dec 2024" },
];

const columnPath = "Williams|Bonus|2024|Feb 2024";

const result = columnDateIndex.find((column) => {
  const re = new RegExp(`${column.path}$`);
  return re.test(columnPath);
});

console.log(result);

Output:
{ path: ‘2024|Jan 2024’ }

Expected Output:
{ path: "2024|Feb 2024" }

I want to get the exact end match.

Tags:

2

Answers


  1. 0

    I will use endsWith here:

    const columnDateIndex = [
  { path: "2023|Jan 2023" },
  { path: "2023|Feb 2023" },
  { path: "2023|Mar 2023" },
  { path: "2023|Apr 2023" },
  { path: "2023|May 2023" },
  { path: "2023|Jun 2023" },
  { path: "2023|Jul 2023" },
  { path: "2023|Aug 2023" },
  { path: "2023|Sep 2023" },
  { path: "2023|Oct 2023" },
  { path: "2023|Nov 2023" },
  { path: "2023|Dec 2023" },
  { path: "2024|Jan 2024" },
  { path: "2024|Feb 2024" },
  { path: "2024|Mar 2024" },
  { path: "2024|Apr 2024" },
  { path: "2024|May 2024" },
  { path: "2024|Jun 2024" },
  { path: "2024|Jul 2024" },
  { path: "2024|Aug 2024" },
  { path: "2024|Sep 2024" },
  { path: "2024|Oct 2024" },
  { path: "2024|Nov 2024" },
  { path: "2024|Dec 2024" },
];

const columnPath = "Williams|Bonus|2024|Feb 2024";

const result = columnDateIndex.find((column) => {
  return columnPath.endsWith(column.path);
});

console.log(result);
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  2. 0

    you have to esacpe th | and space chars, they should be treated as literal chars

    const columnDateIndex = [
  { path: "2023|Jan 2023" },
  { path: "2023|Feb 2023" },
  { path: "2023|Mar 2023" },
  { path: "2023|Apr 2023" },
  { path: "2023|May 2023" },
  { path: "2023|Jun 2023" },
  { path: "2023|Jul 2023" },
  { path: "2023|Aug 2023" },
  { path: "2023|Sep 2023" },
  { path: "2023|Oct 2023" },
  { path: "2023|Nov 2023" },
  { path: "2023|Dec 2023" },
  { path: "2024|Jan 2024" },
  { path: "2024|Feb 2024" },
  { path: "2024|Mar 2024" },
  { path: "2024|Apr 2024" },
  { path: "2024|May 2024" },
  { path: "2024|Jun 2024" },
  { path: "2024|Jul 2024" },
  { path: "2024|Aug 2024" },
  { path: "2024|Sep 2024" },
  { path: "2024|Oct 2024" },
  { path: "2024|Nov 2024" },
  { path: "2024|Dec 2024" },
];

const columnPath = "Williams|Bonus|2024|Feb 2024";

const result = columnDateIndex.find((column) => {
  const pattern = column.path.replace('|', '\|').replace(' ', '\s');
  const re = new RegExp(`${pattern}$`);
  return re.test(columnPath);
});

console.log(result);
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