isNotBlank

Checks if a string is not blank — non-empty and contains at least one non-whitespace character. null and undefined are considered blank and return false.

Uses String.prototype.trim() internally. See isBlank for the full list of characters considered whitespace (includes non-breaking space, en/em space, ideographic space, etc.).

Available since v2.0.3

Import

import { isNotBlank } from '@helpers4/string';

Signature

isNotBlank(value: string | null | undefined): boolean

Parameters

Parameter	Type	Description
value	string | null | undefined	The string to check

Returns

boolean — true if the string has at least one non-whitespace character; false for blank, null, or undefined

Examples

Check that a string has real content

Returns true only when the string contains at least one non-whitespace character.

isNotBlank('foo')  // => true
isNotBlank(' x ')  // => true
isNotBlank('')     // => false
isNotBlank('   ')  // => false
isNotBlank('\t')   // => false

Filter out blank strings from an array

Use as a predicate in .filter() to keep only strings with real content.

const tags = ['typescript', '  ', '', 'helpers'];
tags.filter(isNotBlank)
// => ['typescript', 'helpers']

Source

View source on GitHub