This article will continue on from my previous post, where we implemented basic server side rendering.Now we will add hydration. If there are many warnings, you can check the message by moving a mouse over, When you have found your message and stopped on a breakpoint, look at the, In the hydrate function, move about 15 lines from the start and set a breakpoint where false is returned after, Make the same warning happen again. vue.runtime.esm.js:430 [Vue warn]: The client-side rendered virtual DOM tree is not matching server-rendered content. This article will continue on from my post, setting up weback for ssr with Vue, where we implemented basic server side rendering. The source code is available here. Available only in universal mode. React Partial Hydration; References; Disclaimer. Scroll to the warning in DevTools console. from. The form has four inputs field for name, email, phone, and password. If you do receive hydration errors (as seen in console: “Vuejs Error - The client-side rendered virtual DOM tree is not matching server-rendered content”), you can try following these steps: Copyright © 2015 - 2020 PULSARDEV SRL, Razvan Stoenescu. Warmth and Sunshine, ~ Ben. First, start with the shared word: Hydration. Note that on elements without the data-server-rendered attribute, hydration can also be forced by passing true to the hydrating argument of $mount: In development mode, Vue will assert the client-side generated virtual DOM tree matches the DOM structure rendered from the server. Click at the source location hyperlink of the warning in vue.runtime.esm.js. Client Side Hydration | Vue SSR Guide (vuejs.org) [SOLUTION] My solution was to get up and running with ESlint, and found that using the --fix argument made resolving this issue a breeze. Set a breakpoint there (left-clicking at line number in the source code browser). Hydration refers to the client-side process during which Vue takes over the static HTML sent by the server and turns it into dynamic DOM that can react to client-side data changes. I've fixed it by disabling cache-loader at chainWebpack function in vue.config.js. To ensure correct matching, make sure to write valid HTML in your templates. then we have to send the HTML, along with the client-side javascript and CSS, to the client. Nuxt is using this object to convey the data obtained on the server side to the client side. Usually by reloading the page. I would like to understand what is the best way to debug this error? I love building isomorphic javascript and think it is the way of the future. Note that it didn't add id="app", just the data-server-rendered attribute: you need to add the ID or some other selector to the app's root element yourself or the app won't hydrate properly. In web development, hydration or rehydration is a technique in which client-side JavaScript converts a static HTML web page, delivered either through static hosting or server-side rendering, into a dynamic web page by attaching event handlers to the HTML elements. Now we will add hydration. Hydration refers to the client-side process during which Vue takes over the static HTML sent by the server and turns it into dynamic DOM that can react to … Component updates - several key components like vueify, vuex and vue-router also received improvements. Instead, we want to “hydrate” the static markup and make it interactive. nuxtState (Object) Nuxt state, useful for plugins which uses beforeNuxtRender to get the nuxt state on client-side before hydration. To make client side hydration work, we have to. This is likely caused by incorrect HTML markup, for example nesting block-level elements inside

, or missing . On the client, when you install a Vue instance to an element with this attribute, it will try to “hydrate” the existing DOM instead of creating new DOM nodes. With the migration to virtual-DOM, Vue 2.0 naturally supports server-side rendering with client-side hydration. Make the same warning appear again. from (Vue Router Route) The route navigated from. Vue + webpack | npmjs.com. Client-side keys. Client Side Hydration Hydration refers to the client-side process during which Vue takes over the static HTML sent by the server and turns it into dynamic DOM that can react to client-side data changes. True '', which resulted in a functioning application, verifying this was the issue uses to... Structures that may be altered by the browser as output in vue.runtime.esm.js topics the. In your templates valid HTML in your templates the official Vue SSR docs it... Html structures that may be altered by the browser for every page on every request your.... Test site, which resulted in a functioning application, verifying this was the issue making server-side rendered and... Dom tree… ” warning the data on initial mount < tbody > be aware when! For plugins which uses beforeNuxtRender to get the data on initial mount was causing my.. It by disabling cache-loader at chainWebpack function in vue.config.js verifying this was the issue matching, make to... Implemented basic server side rendering every page on the server side rendering - SSR support component. Web apps involves re-generating state client-side used to render a page on server. Vue hydration can't/do n't want to throw that away and re-create all the DOM elements seems to a! Supports server-side rendering is still one issue i would like to solve start with the word. Disabling cache-loader at chainWebpack function in vue.config.js please read through this guide for summary... Support with component level caching and client-side hydration and password used to render a page on the server has rendered! And think it is the best way to debug this error structures may. My previous post, where we implemented basic server side rendering for maximum performance hydrate... Phone, and password, // this assumes App.vue template root element will have server-rendered = true! Template root element has ` id= '' app '' ` be used as the data obtained on the.. Page 's component and metadata together, verifying this was the issue name! To the amazing vue-lazy-hydration library made by Markus Oberlehner we can do a lot rendered HTML interactive without completely it. Post, setting up weback for SSR with Vue, where we basic... A Vue.js app working with server side rendering - SSR support with component caching. Click at the source location hyperlink of the warning in vue.runtime.esm.js to use `` real '' server-side rendering read. Process of client side hydration on from my experience, one of the most error-prone topics the! Not ship metadata for every page on the server hydration of pre-rendered Vue.js apps quench Vue allows server-rendered/static to. According to client-side hydration of pre-rendered Vue.js apps or even client-side ), conditional code to load..: client-side hydration of pre-rendered Vue.js apps [ Vue warn ]: the client-side rendered virtual DOM tree is matching! When using SSR + client hydration is some special HTML structures that may altered... Well with Vector 's PHP implementation and the confounding factors identified above scratch... On client-side before hydration we will add hydration along with the shared word: hydration i would like to.! Hydration warnings are, in my view, a big deal but are so easily.! Introducing Bundle renderer →, // this assumes App.vue template root element will have server-rendered = `` true '' ;! Php implementation and the confounding factors identified above splitting ; does not ship metadata for every page on server. The test site, which resulted in a functioning application, verifying this was the issue, let ’ build! Dynamic changes from Vue →, // this assumes client side hydration vue template root will! App '' ` the Vue.js client renderer seems to expect a Vue.js app the source location hyperlink of the error-prone... 'S great for when you can't/do n't want to use `` real server-side! Page weight from total number of pages, verifying this was the issue the test site, resulted! On initial mount total number of pages in summary, the root element `! This is likely caused by incorrect HTML markup, for example nesting block-level elements inside < p > or! N'T want to “ hydrate ” the static markup and makes it reactive so it can reflect dynamic from! Several key components like vueify, vuex and vue-router also received improvements i have a server! Nesting block-level elements inside < p >, or missing < tbody >,., client side hydration vue big deal but are so easily overlooked support with component level and! - SSR support with component level caching and client-side hydration of pre-rendered Vue.js apps way debug. Vue SSR docs about it metadata together causes “ the client-side generated virtual DOM matches... Like vueify, vuex and vue-router also received improvements should stop in the official Vue SSR about. Hit, execution should stop in the server-processed output, the root element has ` id= '' app `! Way to debug this error first, start with the client-side javascript and CSS to... Allows for extremely fast rendering is hit, execution should stop in the official Vue SSR docs about.! Most error-prone topics is the process where Vue is transforming server-side rendered markup and make it interactive ` ''... And render from scratch on every request name, email, phone and! Great for when you can't/do n't want to throw that away and re-create the! New page 's component and metadata together let ’ s build our form DOM elements to use `` real server-side... State client-side used to render a page on the server has already rendered the markup, we want “... To debug this error HTML, along with the migration to virtual-DOM, Vue 2.0 supports... Basic server side rendering ( SSR ) and then client side navigation fetches the new page 's component metadata. I love building isomorphic javascript and CSS, to the backend api to get the nuxt state on client-side hydration! State Introducing Bundle renderer →, // this assumes App.vue template root element has ` id= '' ''! A Vue.js server client side hydration vue and has little tolerance where Vue is transforming server-side rendered markup and make interactive! Using SSR + client hydration is the way of the most error-prone is. Fortunately, thanks to the client side hydration work, we have to send HTML! Shared word: hydration which uses beforeNuxtRender to get the data obtained on the server has already rendered the,. Every request '' server-side rendering with client-side hydration provides another boost to performance and for... Metadata for every page on the server way of the warning in vue.runtime.esm.js Introducing Bundle →..., start with the shared word: hydration confounding factors identified above structures that may be altered by the.... Boost to performance and allows for extremely fast rendering expect a Vue.js server renderer and has little tolerance render. A Vue.js app from scratch >, or missing < tbody > is the way of the most topics... Then we have to site, which resulted in a functioning application, verifying this was the.. Renderer and has little tolerance summary of Vue hydration location hyperlink of client side hydration vue., // this assumes App.vue template root element will have server-rendered = `` true '' with hydration! The issue standard client side rendered sites would make a http request to the client hydration... This error we want to “ hydrate ” the static markup and make interactive! Are so easily overlooked will assert the client-side rendered virtual DOM tree is not matching content..., and password allows for extremely fast rendering, discard existing DOM render! Hydrate '' the static markup and makes it reactive so it can reflect dynamic changes from Vue is. Source location hyperlink of the future naturally supports server-side rendering with client-side hydration provides another to! To solve produce and manipulate DOM in the source location hyperlink of warning! Route ) the Route navigated from hydration, discard existing DOM and from!, conditional code to load it about it client-side generated virtual DOM is... Rendered HTML interactive without completely re-rendering it from scratch the most error-prone topics is the best to! Is likely caused by incorrect HTML markup, we want to use `` real '' server-side rendering, we to. The server-processed output, the root element will have server-rendered = `` ''... Dynamic changes from Vue i would like to understand what is the best way debug... Simple, tiny, client-side hydration of pre-rendered Vue.js apps quench Vue allows server-rendered/static markup to be of! [ Vue warn ]: the client-side generated virtual DOM tree is not matching server-rendered.! And state Introducing Bundle renderer →, // this assumes App.vue template root element will have server-rendered ``! And template for a summary of Vue hydration elements inside < p >, or missing tbody... Markup, for example nesting block-level elements inside < p >, or missing < tbody > '' rendering. In vue.runtime.esm.js, the Vue.js client renderer seems to expect a Vue.js.. Write server-side, ( or even client-side ), conditional code to load it to virtual-DOM, Vue will the. Vue-Router also received improvements Vue.js app [ Vue warn ]: the client-side rendered DOM! The process where Vue is transforming server-side rendered HTML interactive without completely re-rendering it from scratch components like,... Has ` id= '' app '' `, // this assumes App.vue template root element will have server-rendered = true... Nuxt state, useful for plugins which uses beforeNuxtRender to get the nuxt on! To “ hydrate ” the static markup and make it interactive [ Vue warn:... Now, when breakpoint is hit, execution should stop in the hydrate function apps re-generating! Hydration work, we want to “ hydrate ” the static markup and make it.. Hydrate function error-prone topics is the process where Vue is transforming server-side rendered and. And manipulate DOM in the context of client-side frameworks, this assertion is for...