node-lib

@wtasnorg/node-lib

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@wtasnorg/node-lib / countString

Function: countString()

countString(s, substr): number

Defined in: src/strings.ts:236

Count counts the number of non-overlapping instances of substr in s. If substr is an empty string, Count returns 1 + the number of Unicode code points in s.

Parameters

s

string

Input string.

substr

string

Substring to count.

Returns

number

Number of non-overlapping occurrences.

Example

count("cheese", "e"); // 3
count("five", "");    // 5 (empty substr → rune count + 1)
count("", "");        // 1
count("", "foo");     // 0 — substr longer than s

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