Environment: client.

Implemented by: vike-react/vike-vue.

You need vike-react/vike-vue to be able to use onBeforeRenderClient(). If you don't use vike-react/vike-vue then see Without vike-{react,vue,solid}.

Hook called at the beginning of rendering the page on the client-side. It's usually used for integrating tools, such as state management tools.

It's called upon rendering the first page (e.g. hydration when using SSR) and upon page navigation.

If you want to perform an action only upon hydration then use pageContext.isHydration:

// +onBeforeRenderClient.js
 
export function onBeforeRenderClient(pageContext) {
  if (pageContext.isHydration) {
    // ...
  }
}

It's called by vike-{react,vue} at the beginning of its onRenderClient() implementation.

Without vike-{react,vue,solid}

If you don't use any UI framework Vike extension vike-react/vike-vue/vike-solid then use the onRenderClient() hook instead.

See also

• onAfterRenderClient() hook
• onRenderClient() hook
• API > onHydrationEnd() hook
• API > onPageTransitionStart() hook
• API > onPageTransitionEnd() hook
• onBeforeRenderHtml() hook
• onAfterRenderHtml() hook
• API > Hooks
• API > +client.js