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    array.findindex

    1.0.4 • Public • Published

    Lightweight Array.prototype.findIndex polyfill

    Build Status Coverage Status Maintainability Size

    The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise -1 is returned.

    How It Works

    1. Download Latest version or install with bower bower install array.findindex
    2. Include polyfill on your web-page

    <script src="dist/array-find-index-polyfill.min.js"></script>

    3. Use as native method

    ["apple", "banana", "peach"].findIndex(function(item) {
        return item === "banana";
    });
    // 1

    Performance

    Testing in Chrome 61.0.3163 / Mac OS X 10.13.0
    Native 431,077 Ops/sec
    Polyfill 2,289,661 Ops/sec

    See https://jsperf.com/array-prototype-find-index-polyfill

    Links

    Specification on "Ecma International"
    MDN examples

    Copyright and license

    Code and documentation copyright 2017 Vladimir Belov. Code released under the MIT license.

    Install

    npm i array.findindex

    DownloadsWeekly Downloads

    37

    Version

    1.0.4

    License

    MIT

    Last publish

    Collaborators

    • vovkabelov