Vue.js - The error message "$slots have 'el' is null" indicates a problem with the element in

When trying to access the Vuejs $slots instance, I encounter el = null, but type = "div"

Here is the template:

  <slot name="head">
    <h1>
      {{ text }}
    </h1>
  </slot>

And in the script section:

  ...
  const slotContent = this.$slots.head();
  console.log(slotContent[0]);

Even though we have added a div element, the .el property remains null.

In the parent component:

<custom-component :key="human.id">
    <template #head>
      <div style="display: flex;">
        This is the Head
      </div>
    </template>

    <template #default>
     <h1>Head</h1>
    </template>
</custom-tooltip>

The console displays:

anchor: null
appContext: null
children: (2) [{…}, {…}]
component: null
dirs: null
dynamicChildren: null
dynamicProps: null
el: null <-- element is null
...
type: "div" <-- div is passed

Error: Cannot read properties of undefined (reading 'el')

Answer №1

vm.$slots and vm.$scopedSlots are used to reference the slot inputs that are passed to the component.

If you do not include a <template #head> in your component, it will not be displayed within these properties.

From my understanding, the default slot cannot be accessed directly from the vm object in Vue. It is rendered as if it was not placed inside a slot initially. You will have to find a different way to query that element.

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