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Chris Tate
9282ed542a
* Implement static array lastIndexOf search * Coerce dynamic string-search needles before positions * Handle optional string-search needles with positions
18 lines
384 B
JavaScript
18 lines
384 B
JavaScript
/** @param {string | undefined} needle */
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function probe(needle) {
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const value = "ababa";
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console.log(
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value.indexOf(needle),
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value.indexOf(needle, 1),
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value.includes(needle),
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value.includes(needle, 1),
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value.startsWith(needle),
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value.startsWith(needle, 1),
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value.endsWith(needle),
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value.endsWith(needle, 2),
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);
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}
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probe("ba");
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probe(undefined);
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