endsWith()

endsWith(str, suffix, position?): boolean

Checks if a string ends with a given suffix.

DEPRECATED

Use string.endsWith() directly instead.

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Parameters

str: string | null | undefined

The string to check.

suffix: string | null | undefined

The suffix to search for.

position?: number

The position to search up to.

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Returns: boolean

true if the string ends with the suffix, false otherwise.

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See Also

• String.endsWith() - MDN
• Browser support - Can I Use

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Since

2.0.0

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Also known as

endsWith (Lodash, es-toolkit, Remeda, Ramda, Effect) · ❌ (Radashi, Modern Dash, Antfu)

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Example

// ❌ Deprecated approach
endsWith('hello world', 'world'); // => true
endsWith('hello world', 'lo', 5); // => true

// ✅ Recommended approach
'hello world'.endsWith('world'); // => true
'hello world'.endsWith('lo', 5); // => true

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How it works?

Checks if string ends with the given target. Deprecated: Use string.endsWith() directly (ES2015).

Native Equivalent

// ❌ endsWith('hello', 'lo')
// ✅ 'hello'.endsWith('lo')

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Use Cases

Check suffix 📌

Check if string ends with value.

#ends#suffix#check#string

'hello world'.endsWith('world');  // true

Validate extension

Check file extension.

#validate#extension#file#suffix

const isTypeScript = filename.endsWith('.ts');