<p>Conditional rendering of attributes changed in Vue 3. To omit an attribute use null or undefined.
Vue 2:</p>
<p></p><div>
Result: <div><p></p>
<p></p><div>
Result: <div><p></p>
<p>Vue 3:</p>
<p></p><div>
Result: <div><p></p>
<p></p><div>
Result: <div><p></p>
</div></div></div></div></div></div></div></div>


Conditional rendering of attributes changed in Vue 3. To omit an attribute use null or undefined.
Vue 2:

<div :attr="false">
Result: <div>
<div :attr="null">
Result: <div>

Vue 3:
<div :attr="false">
Result: <div attr="false">

<div :attr="null">
Result: <div>


vue null or undefined