# rrweb-snapshot

[![Build Status](https://travis-ci.org/rrweb-io/rrweb.svg?branch=master)](https://travis-ci.org/rrweb-io/rrweb) [![Join the chat at slack](https://img.shields.io/badge/slack-@rrweb-teal.svg?logo=slack)](https://join.slack.com/t/rrweb/shared_invite/zt-siwoc6hx-uWay3s2wyG8t5GpZVb8rWg)

Snapshot the DOM into a stateful and serializable data structure.
Also, provide the ability to rebuild the DOM via snapshot.

## API

This module export following methods:

### snapshot

`snapshot` will traverse the DOM and return a stateful and serializable data structure which can represent the current DOM **view**.

There are several things will be done during snapshot:

1. Inline some DOM states into HTML attributes, e.g, HTMLInputElement's value.
2. Turn script tags into `noscript` tags to avoid scripts being executed.
3. Try to inline stylesheets to make sure local stylesheets can be used.
4. Make relative paths in href, src, CSS to be absolute paths.
5. Give an id to each Node, and return the id node map when snapshot finished.

#### rebuild

`rebuild` will build the DOM according to the taken snapshot.

There are several things will be done during rebuild:

1. Add data-rrid attribute if the Node is an Element.
2. Create some extra DOM node like text node to place inline CSS and some states.
3. Add data-extra-child-index attribute if Node has some extra child DOM.

#### serializeNodeWithId

`serializeNodeWithId` can serialize a node into snapshot format with id.

#### buildNodeWithSN

`buildNodeWithSN` will build DOM from serialized node and store serialized information in the `mirror.getMeta(node)`.

## Sponsors

[Become a sponsor](https://opencollective.com/rrweb#sponsor) and get your logo on our README on Github with a link to your site.

### Gold Sponsors 🥇

<div dir="auto">

<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/0/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/0/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/1/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/1/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>
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<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/3/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/3/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/4/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/4/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/5/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/5/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/gold-sponsor/6/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/gold-sponsor/6/avatar.svg?requireActive=false&avatarHeight=225" alt="sponsor"></a>

</div>

### Silver Sponsors 🥈

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<a href="https://opencollective.com/rrweb/tiers/silver-sponsor/0/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/silver-sponsor/0/avatar.svg?requireActive=false&avatarHeight=158" alt="sponsor"></a>
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<a href="https://opencollective.com/rrweb/tiers/silver-sponsor/3/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/silver-sponsor/3/avatar.svg?requireActive=false&avatarHeight=158" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/silver-sponsor/4/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/silver-sponsor/4/avatar.svg?requireActive=false&avatarHeight=158" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/silver-sponsor/5/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/silver-sponsor/5/avatar.svg?requireActive=false&avatarHeight=158" alt="sponsor"></a>
<a href="https://opencollective.com/rrweb/tiers/silver-sponsor/6/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/silver-sponsor/6/avatar.svg?requireActive=false&avatarHeight=158" alt="sponsor"></a>

</div>

### Bronze Sponsors 🥉

<div dir="auto">

<a href="https://opencollective.com/rrweb/tiers/sponsors/0/website?requireActive=false" target="_blank"><img src="https://opencollective.com/rrweb/tiers/sponsors/0/avatar.svg?requireActive=false&avatarHeight=70" alt="sponsor"></a>
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</div>

### Backers

<a href="https://opencollective.com/rrweb#sponsor" rel="nofollow"><img src="https://opencollective.com/rrweb/tiers/backers.svg?avatarHeight=36"></a>

## Core Team Members

<table>
  <tr>
    <td align="center">
      <a href="https://github.com/Yuyz0112">
        <img
          src="https://avatars.githubusercontent.com/u/13651389?s=100"
          width="100px;"
          alt=""
        />
        <br /><sub><b>Yuyz0112</b></sub>
        <br /><br />
      </a>
    </td>
    <td align="center">
      <a href="https://github.com/YunFeng0817">
        <img
          src="https://avatars.githubusercontent.com/u/27533910?s=100"
          width="100px;"
          alt=""
        />
        <br /><sub><b>Yun Feng</b></sub>
        <br /><br />
      </a>
    </td>
    <td align="center">
      <a href="https://github.com/eoghanmurray">
        <img
          src="https://avatars.githubusercontent.com/u/156780?s=100"
          width="100px;"
          alt=""
        />
        <br /><sub><b>eoghanmurray</b></sub>
        <br /><br />
      </a>
    </td>
    <td align="center">
      <a href="https://github.com/Juice10">
        <img
          src="https://avatars.githubusercontent.com/u/4106?s=100"
          width="100px;"
          alt=""
        />
        <br /><sub><b>Juice10</b></sub>
        <br /><sub>open for rrweb consulting</sub>
      </a>
    </td>
  </tr>
</table>

## Who's using rrweb?

<table>
  <tr>
    <td align="center">
      <a href="http://www.smartx.com/" target="_blank">
        <img width="195px" src="https://www.rrweb.io/logos/smartx.png">
      </a>
    </td>
    <td align="center">
      <a href="https://posthog.com?utm_source=rrweb&utm_medium=sponsorship&utm_campaign=open-source-sponsorship" target="_blank">
        <img width="195px" src="https://www.rrweb.io/logos/posthog.png">
      </a>
    </td>
    <td align="center">
      <a href="https://statcounter.com/session-replay/" target="_blank">
        <img width="195px" src="https://statcounter.com/images/logo-statcounter-arc-blue.svg">
      </a>
    </td>
    <td align="center">
      <a href="https://recordonce.com/" target="_blank">
        <img width="195px" alt="Smart screen recording for SaaS" src="https://uploads-ssl.webflow.com/5f3d133183156245630d4446/5f3d1940abe8db8612c23521_Record-Once-logo-554x80px.svg">
      </a>
    </td>
  </tr>
    <tr>
    <td align="center">
      <a href="https://cux.io" target="_blank">
        <img style="padding: 8px" alt="The first ever UX automation tool" width="195px" src="https://cux.io/cux-logo.svg">
      </a>
    </td>
    <td align="center">
      <a href="https://remsupp.com" target="_blank">
        <img style="padding: 8px" alt="Remote Access & Co-Browsing" width="195px" src="https://remsupp.com/images/logo.png">
      </a>
    </td>
    <td align="center">
      <a href="https://highlight.io" target="_blank">
        <img style="padding: 8px" alt="The open source, fullstack Monitoring Platform." width="195px" src="https://github.com/highlight/highlight/raw/main/highlight.io/public/images/logo.png">
      </a>
    </td>
    <td align="center">
      <a href="https://analyzee.io" target="_blank">
        <img style="padding: 8px" alt="Comprehensive data analytics platform that empowers businesses to gain valuable insights and make data-driven decisions." width="195px" src="https://cdn.analyzee.io/assets/analyzee-logo.png">
      </a>
    </td>
  </tr>
  <tr>
    <td align="center">
      <a href="https://requestly.io" target="_blank">
        <img style="padding: 8px" alt="Intercept, Modify, Record & Replay HTTP Requests." width="195px" src="https://github.com/requestly/requestly/assets/16779465/652552db-c867-44cb-9bb5-94a2026e04ca">
      </a>
    </td>
    <td align="center">
      <a href="https://gleap.io" target="_blank">
        <img style="padding: 8px" alt="In-app bug reporting & customer feedback platform." width="195px" src="https://assets-global.website-files.com/6506f3f29c68b1724807619d/6506f56010237164c6306591_GleapLogo.svg">
      </a>
    </td>
    <td align="center">
      <a href="https://uxwizz.com" target="_blank">
        <img style="padding: 8px" alt="Self-hosted website analytics with heatmaps and session recordings." width="195px" src="https://github.com/UXWizz/public-files/raw/main/assets/logo.png">
      </a>
    </td>
    <td align="center">
      <a href="https://www.howdygo.com" target="_blank">
        <img style="padding: 8px" alt="Interactive product demos for small marketing teams" width="195px" src="https://assets-global.website-files.com/650afb446f1dd5bd410f00cc/650b2cec6188ff54dd9b01e1_Logo.svg">
      </a>
    </td>
  </tr>
</table>
