Thing in common:

Both v-if and V-show display DOM elements dynamically.

The difference between:

  1. Compilation: V-IF is true conditional rendering because it ensures that event listeners and subcomponents within the conditional block are properly destroyed and rebuilt during the switch. V-show elements are always rendered and retained in the DOM. V-show simply toggles the element’s CSS attribute display.
  2. Compile condition: V-if is lazy: if the condition is false during the initial render, nothing is done. The conditional block is not rendered until the condition is true for the first time. V-show Regardless of initial conditions, elements are always rendered and simply switched based on CSS.
  3. Performance cost: V-IF has higher switching cost. V-show has a higher initial render cost.
  4. Application scenario: V-IF is suitable for use when run-time conditions rarely change. V-show is suitable for frequent switching.