Vue v-if Directive

Vue v-if Directive

It adds or removes elements from the DOM based on a condition.

 What is Vue v-if Directive?

v-if renders an element only if the condition is true.

If isLogin is:

• true → element is shown

• false → element is removed from the DOM

 Basic Example

v-if with v-else

Used when you want two conditions.

v-else must be immediately after v-if.

v-if with v-else-if

Used for multiple conditions.

 Using v-if with <template>

When you need to conditionally render multiple elements.

<template> does not appear in the DOM.

v-if vs v-show

 Use v-if when condition changes rarely
Use v-show when toggling often

v-if with Boolean Expressions

 Common Mistakes

 Using v-if and v-for together

 Correct way:

 Key Points to Remember

• v-if removes elements from DOM

• Works with:

  • v-else

  • v-else-if

• Use <template> for multiple elements

• Better for conditional rendering logic

 Conclusion

The v-if directive is essential for controlling what appears on the screen in a Vue app.
Understanding v-if helps you build clean, efficient, and optimized UIs.