What does $el mean in vue

In Vue.js, $el points to the root DOM element of the component, which is used for DOM operations, event binding, style operations and sub-component interaction.

$el means in Vue.js

In Vue.js, $el is an instance property that points to the component's root DOM element.

Function

$el Mainly used for the following aspects:

• Get the root element of the component for easy processing DOM manipulation.
• Bind event listener.
• Manipulate component styles.
• Access the DOM element of the child component.

Usage scenarios

#$el Usually used in the following scenarios:

• DOM operations: For example, use $el.style to modify the component's style, or use $el.addEventListener to add an event listener.
• Subcomponent interaction: For example, find the DOM element of the subcomponent through $el.querySelector and interact with it.
• Component lifecycle hooks: For example, in the mounted hook, $el can be used to access the DOM element where the component has been mounted.

Note

• $el will not be assigned until the component is mounted to the DOM.
• After the component is destroyed, $el will be set to null.
• $el is a read-only property and cannot be modified directly.

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