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<h1 id="function-isnumeric">Function isNumeric <a href="#function-isnumeric" title="Permalink">#</a></h1>

Test whether a value is an numeric value.

The function is evaluated element-wise in case of Array or Matrix input.


<h2 id="syntax">Syntax <a href="#syntax" title="Permalink">#</a></h2>

```js
math.isNumeric(x)
```

<h3 id="parameters">Parameters <a href="#parameters" title="Permalink">#</a></h3>

Parameter | Type | Description
--------- | ---- | -----------
`x` | * | Value to be tested

<h3 id="returns">Returns <a href="#returns" title="Permalink">#</a></h3>

Type | Description
---- | -----------
boolean | Returns true when `x` is a `number`, `BigNumber`, `Fraction`, or `boolean`. Returns false for other types. Throws an error in case of unknown types.


<h3 id="throws">Throws <a href="#throws" title="Permalink">#</a></h3>

Type | Description
---- | -----------


<h2 id="examples">Examples <a href="#examples" title="Permalink">#</a></h2>

```js
math.isNumeric(2)                     // returns true
math.isNumeric('2')                   // returns false
math.hasNumericValue('2')             // returns true
math.isNumeric(0)                     // returns true
math.isNumeric(math.bignumber('42'))  // returns true
math.isNumeric(math.bigint('42'))     // returns true
math.isNumeric(math.fraction(4))      // returns true
math.isNumeric(math.complex('2-4i'))  // returns false
math.isNumeric([2.3, 'foo', false])   // returns [true, false, true]
```


<h2 id="see-also">See also <a href="#see-also" title="Permalink">#</a></h2>

[isZero](isZero.html),
[isPositive](isPositive.html),
[isNegative](isNegative.html),
[isInteger](isInteger.html),
[hasNumericValue](hasNumericValue.html)