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numeric

Validate that a value is numeric (integer or floating point, including numeric strings).

Signature​

NguardValidators.Number.numeric: ValidatorFn

A parameterless validator — used directly without invocation.

Reactive forms​

import { FormControl } from '@angular/forms';
import { NguardValidators } from 'ng-nguard';

const price = new FormControl('', [NguardValidators.Number.numeric]);

Template-driven forms​

<input ngModel name="price" nguardNumeric />

Error key​

{ numeric: true }

Notes​

  • Accepts integers, floating point, and numeric strings ('42', '3.14', '-5').
  • Rejects null, undefined, empty string, NaN, Infinity, non-numeric strings ('abc', '1abc'), booleans, objects, arrays.
  • Use this when you need a "must be a number" check without bounds.

See also​