What are the differences between v-if and v-show in Vue.js?

What are the differences between v-if and v-show in Vue.js?

In Vue.js, v-if and v-show are both directives used for conditional rendering, but they work differently. v-if completely removes or adds elements to the DOM based on the condition, while v-show toggles the visibility of the element using CSS.

Can you explain when to use v-if over v-show?

You should use v-if when you need to conditionally render elements that are expensive to create or when the condition changes frequently. Use v-show for elements that need to be toggled frequently, as it is more efficient since it only changes the CSS display property.

Are there any performance implications of using one over the other?

Yes, v-if can be more performance-intensive because it involves adding and removing elements from the DOM, which can be costly. v-show, on the other hand, is more efficient for toggling visibility since it only changes the CSS.

What about the initial rendering time?

v-if may lead to slower initial rendering since it waits for the condition to be true before rendering the element. In contrast, v-show renders the element immediately but hides it, making it faster for initial load.