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# Connection Validation

Connections can be validated before edges are created and nodes get connected. This example shows how to use validators
for handles so only connections that have been validated are created.

<div class="mt-6">
  <iframe src="https://codesandbox.io/embed/vue-flow-validation-example-zxbyus?eslint=1&fontsize=14&hidenavigation=1&module=%2Fsrc%2Fcomponents%2FFlow.vue&theme=dark"
    class="hidden dark:block bg-black h-full w-full min-h-[75vh]"
    title="Vue Flow: Validation Example"
    allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
    sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
  ></iframe>
  <iframe src="https://codesandbox.io/embed/vue-flow-validation-example-zxbyus?eslint=1&fontsize=14&hidenavigation=1&module=%2Fsrc%2Fcomponents%2FFlow.vue&theme=light"
     class="block dark:hidden h-full w-full min-h-[75vh]"
      title="Vue Flow: Validation Example"
      allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
      sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
  ></iframe>
</div>
