What do ref and id in vue do?

In Vue.js, ref is used in JavaScript to reference DOM elements (accessible to subcomponents and the DOM element itself), while id is used to set the HTML id attribute (can be used for CSS styles, HTML tags, and JavaScript lookups).

The purpose of ref and id in Vue

The ref and id in Vue.js are two different things Attribute used to identify a DOM element within a component or template:

ref

# The ref attribute allows you to reference a DOM element through JavaScript. This is useful in the following situations:

• Accessing child components:You can use ref to access instances of child Vue components.
• Getting the DOM element: You can use ref to get the DOM element itself to interact with the underlying HTML.
• Implementing the ref object: The ref attribute can return a ref object that contains the value attribute pointing to the DOM element.

id

id attributeSets the HTML id attribute of the DOM element. This is useful in the following situations:

• CSS Styling: You can use CSS selectors to style DOM elements based on id.
• HTML Tags: You can use the label and for attributes to create a form control associated with a specific DOM element.
• JavaScript Find: You can use the document.getElementById() or querySelector() method to find a DOM element with a specific id.

Difference

• Usage: ref is used to reference DOM elements, while id is used to set the HTML id attribute.
• Access: ref is accessible via JavaScript, while id is accessible via CSS, HTML, and JavaScript.
• Scope: ref is only available within the scope of the current component or template, while id can be accessed globally.

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