What is the difference between v-if and v-show in Vue?

What is the difference between v-if and v-show in Vue?

In Vue, v-if is used to conditionally render elements based on a boolean expression. If the expression is false, the element is not rendered at all. On the other hand, v-show toggles the visibility of an element by changing its CSS display property. The element is always rendered, but it can be hidden.

When should I use v-if instead of v-show?

You should use v-if when the condition is likely to change frequently, and you want to avoid rendering the element until it's needed. Use v-show when you need to toggle visibility without the overhead of rendering and unrendering the element.

Can you give me an example of both in action?

Sure! For v-if, you might have a button that shows a modal only when clicked. For v-show, you could have a dropdown menu that you want to show or hide without removing it from the DOM.

Are there any performance considerations I should be aware of?

Yes, v-if can be more performance-intensive because it involves adding and removing elements from the DOM. Use it for elements that are not frequently toggled. v-show is more efficient for elements that need to be shown or hidden often.