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How to get the substring between two substrings in JavaScript

1 Answer

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function SubstringBetweenTwoSubstrings(str, suba, subb) {
    const posA = str.indexOf(suba);
    const posB = str.lastIndexOf(subb);

    if (posA === -1) return "";

    if (posB === -1) return "";

    const indexEndSuba = posA + suba.length;
    if (indexEndSuba >= posB) return "";

    return str.substring(indexEndSuba, posB);
}

const str = "JavaScript:C#:C C++:Java:Python";

console.log(SubstringBetweenTwoSubstrings(str, "C#", "Java"));




/*
run:

:C C++:

*/

 



answered Aug 3, 2024 by avibootz

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