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Regex Code snippets

validate dashed date

Tags: dashed date, validate date, validate dashed date

allow alpha-numeric values

Tags: regex, alpha numeric, regex numerix, regex alpha

Split by new line and remove empty lines

Tags: split new line, split by new line, split, new line, expode new line

Email pattern

Tags: mail pattern, email regex, html mail

Allow only positive number with decimals

Tags: positive number, regex

allow letters and umlaut

Tags: regex, umlaut

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                          private dashedDateString(dateString: string): boolean { // validate date against dd-mm-yyyy
      const regex = /^\d{2}-\d{2}-\d{4}$/;
      return regex.test(dateString);
    }

Allow alphabet, numbers, dot, nderscore and minus

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                      const R_ALPHA_NUM = new RegExp(/^[a-zA-Z0-9\._-]*$/);

Split textarea values by new line and remove empty ones

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                       item.split(/[\n\r]+/g).filter((p) => p.trim());

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                      [a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$

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                      ^[.]?[0-9]+[.]?[0-9]*$

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                      [a-zA-Z\x7f-\xff]