---
description: 🚧 under construction
---

# non-numeric operand

[JS](../../..) ⟩ [operator](..) ⟩ [arithmetic](../arithmetic) ⟩ non-numeric operand

{% hint style="success" %}
<mark style="color:red;">**non-numeric**</mark> <mark style="color:purple;">**operands**</mark>**&#x20;**<mark style="color:yellow;">**in**</mark> [<mark style="color:orange;">**arithmetic**</mark>](../arithmetic) <mark style="color:yellow;">**operations:**</mark>

* that <mark style="color:red;">**cannot**</mark>**&#x20;**<mark style="color:yellow;">**convert to**</mark> [**numbers**](../../../val/prim/num) convert to [<mark style="color:blue;">**NaN**</mark>](../../../val/prim/num/special/nan).&#x20;
* <mark style="color:red;">**if**</mark>**&#x20;**<mark style="color:yellow;">**either operand**</mark> is (or converts to) [<mark style="color:blue;">**NaN**</mark>](../../../val/prim/num/special/nan), the <mark style="color:yellow;">**result**</mark> is (almost always) [<mark style="color:blue;">**NaN**</mark>](../../../val/prim/num/special/nan).
{% endhint %}

{% tabs %}
{% tab title="💈範例" %}
* replit：

```javascript
// Some code
```
{% endtab %}

{% tab title="📗 參考" %}
* [ ] [javascript-the-definitive-guide](../../../../master/ref/javascript-the-definitive-guide "mention") ⟩ 4.8
{% endtab %}

{% tab title="🚧" %}
* [ ] example
{% endtab %}
{% endtabs %}
