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28 lines
619 B
JavaScript
28 lines
619 B
JavaScript
/**
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* Count how often a character (or substring) is used in a string.
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*
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* @param {string} value
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* Value to search in.
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* @param {string} character
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* Character (or substring) to look for.
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* @return {number}
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* Number of times `character` occurred in `value`.
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*/
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export function ccount(value, character) {
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const source = String(value)
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if (typeof character !== 'string') {
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throw new TypeError('Expected character')
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}
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let count = 0
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let index = source.indexOf(character)
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while (index !== -1) {
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count++
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index = source.indexOf(character, index + character.length)
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}
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return count
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}
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