The JavaScript SDK renders a report directly in a <div> of your page instead of an iframe. Your backend signs an embed token (JWT) for the current user, and the SDK sends it with every request to the Datafor server. For the whole sign-in sequence, see Signing In Users of Embedded Reports.

Before you start

1. Create an embed token configuration. In Settings › Access & Integration › Embed tokens (JWT), create and enable a configuration (see JSON Web Token (JWT)). Your backend signs a token for each user with that configuration's Signature algorithm and key (the Secret key for HS algorithms, or the private key that matches the configured public key), with the Datafor login name in the claim named by Username field and an exp claim (see Send a token). Never sign tokens in the browser: the signing key must stay on your server.
2. Allow your page's origin (CORS). The SDK calls the Datafor server from your page's origin. In Settings › Access & Integration › Cross-origin access (CORS) (see Cross-Origin Access (CORS)):
   • Turn on Enable CORS.
   • In Allowed origins, add the origin of the host page, for example https://app.example.com, without a path or trailing /. Separate several origins with commas. Don't use * in production; while Allow credentials is on, * is not accepted.
   • In Allowed request headers, add Authorization. The SDK sends the token as Authorization: Bearer <jwt>; without this header in the list, the browser blocks the requests.
   • The default Allowed methods are GET, HEAD and POST. If the browser console reports another blocked method, for example while saving in edit mode, add it.

Quick start

<!DOCTYPE html>
<html>
<head><meta charset="UTF-8"></head>
<body>
    <div id="container" style="width:100%; height:100vh;"></div>

    <script>window.__dataforSDKBase = 'http://your-server:28080/datafor/content/datafor/ui/';</script>
    <script src="http://your-server:28080/datafor/content/datafor/ui/datafor-loader.js"></script>

    <script>
        var container = document.getElementById('container');
        function loadDataForPage(options) {
            new Datafor.Visualizer(Object.assign({
                el: container,
                serverUrl: 'http://your-server:28080',
                jwt: 'your-jwt-token',
                onRedirectEvent: function (info) {  // the user switched page or mode (for example Edit / View)
                    loadDataForPage(info);
                }
            }, options));
        }
        loadDataForPage({ path: '/home/admin/Sales Report.datafor', mode: 'read' });
    </script>
</body>
</html>

28080 is the default HTTP port of a Datafor server. serverUrl is the server origin only, without /datafor; the SDK adds the application path itself.

Load the SDK

datafor-loader.js adds the SDK's CSS and scripts with document.write. Therefore:

• Load it with a static <script> tag in the host page's HTML, after setting window.__dataforSDKBase. Injecting it later (for example from a Vue or React component, or with a dynamically created <script> element) does not work.
• window.__dataforSDKBase is the folder that contains datafor-loader.js. The loader reads every other SDK file from there.

Option 1: Load from the Datafor server

Every Datafor server ships the SDK at /datafor/content/datafor/ui/:

<script>window.__dataforSDKBase = 'http://your-server:28080/datafor/content/datafor/ui/';</script>
<script src="http://your-server:28080/datafor/content/datafor/ui/datafor-loader.js"></script>

Option 2: Host the SDK files yourself

Copy the SDK package to your web server and point __dataforSDKBase to it:

your-web-root/
└── lib/
    ├── datafor-loader.js          # SDK bootstrap loader
    ├── product.min.js             # Core JS
    ├── product.min.css            # Core CSS
    ├── fonts/                     # Icon fonts
    ├── worker/task.min.js         # Web Worker
    └── data/patch/
        ├── common/                # umi.js, umi.css, and async chunks
        ├── locales/               # Language packs
        └── ai-agent/              # AI Agent resources (optional)

<script>window.__dataforSDKBase = './lib/';</script>
<script src="./lib/datafor-loader.js"></script>

API

Constructor options

new Datafor.Visualizer(options)

Option	Type	Required	Description
el	HTMLElement	Yes	Rendering container. It must have an explicit width and height.
path	String	Yes	Repository path of the .datafor report.
mode	String		'read' for view mode (default), 'edit' for edit mode.
serverUrl	String	Yes	Datafor server origin, for example 'http://your-server:28080' (no /datafor).
jwt	String	Yes	Embed token signed by your backend. It must be a string; any other value is ignored and requests are sent without a token.
locale	String		UI language, such as 'en-US' or 'zh-CN'. If omitted, the user's language from the server is used.
mobile	Boolean		true shows the report's mobile layout. Default false.
initialFilterValues	Object		Opening values of filter components. See initialFilterValues.
filters	String		Initial data filters that need no filter component. See filters / setFilter.
onRedirectEvent	Function		Called when the user switches page or mode (edit ↔ read) inside the report, with the options of the target page. Create a new instance with them, as in the quick start. Always set it.
onUpdatePageTitle	Function		Called with (title, pathTitle) when the report has loaded.
onPageContentReadyEvent	Function		Called with (env, render) before the report is drawn. If you set it, the SDK does not draw the report itself: call render(). Not needed for normal use.

Instance methods

Method	Description
setFilter(filters)	Filters the data and re-queries all components. Pass null to clear.
refreshData()	Re-queries all components.
resize()	Lays the report out again. Call it after the container changes size without a window resize, for example when a side panel opens.
saveBeforeLeave()	Saves an edit-mode report that has unsaved changes. Returns a Promise<boolean>: true if there was nothing to save or the save succeeded, false if it could not save (for example a new report that was never saved, no write permission, or an error). Use it in SPA route guards.
isPageNotSaved()	In edit mode with unsaved changes, returns the unsaved-changes warning text; otherwise "".
getPageKeyInfo()	Returns { path, pageId, mode, mobile, locale }.
destroy()	Removes the report and releases the instance.

Data filtering

There are three ways to filter. They are independent and can be combined:

	initialFilterValues	filters	setFilter()
Purpose	Opening values of filter components	Initial data filter	Filter at runtime
Needs filter components	Yes	No	No
Visible to users	Yes, as the filter's selection	No	No
When it applies	First load, view mode only	First load	Immediately

All three only narrow the data the signed-in user may see. They are not a security control: use row-level security to restrict data per user.

initialFilterValues

Sets the opening selection of filter components, exactly like the default_<component> URL parameter (see Filters). Each key is a filter component's title, or its ID (starting with UUID-). Values are ignored in edit mode.

new Datafor.Visualizer({
    // ...
    initialFilterValues: {
        country: 'Mexico',
        category: 'Bread;Candy',                      // separate several values with ;
        order_date: '1672531200000;1703980800000',    // Date: start;end as millisecond timestamps
    }
});

Filter	Value format
Date	Start and end as millisecond timestamps (13 digits): start;end. Values that are not millisecond timestamps, such as '2024', are ignored.
Numeric slider	Numbers: min;max. A value that is not a number makes the SDK ignore the entry.
Other filters (Dropdown, List box, Radio/Checkbox, …)	Member values separated by ;.

If several filter components have the same title, the value applies to all of them. Give them different titles, or use the component ID, to target one.

filters / setFilter

filters and setFilter() filter data directly by a model field, without a filter component.

// Initial filter
new Datafor.Visualizer({
    // ...
    filters: '{[{"value":["Bread"],"name":"[product_class].[product_category].[product_category]","type":"caption","datatype":"string"}]}'
});

// Filter at runtime
visualizer.setFilter(
    '{[{"value":["Bread"],"name":"[product_class].[product_category].[product_category]","type":"caption","datatype":"string"}]}'
);

// Clear
visualizer.setFilter(null);

Format: {[filter1, filter2, ...]}. Each filter has:

Field	Description	Example
name	uniqueName of the field's level	"[product_class].[product_category].[product_category]"
value	Array of values	["Bread", "Candy"]
type	"caption" matches the display name, "name" the member name	"caption"
datatype	Data type	"string"

The filter object is the same as in XDM messages, which also describes ranges, exclusion and how to find a field's uniqueName.

Framework integration

In Vue, React and other single-page apps, load the SDK with static tags in the app's HTML template (for example index.html), not from a component:

<!-- index.html, before your app bundle -->
<script>window.__dataforSDKBase = 'http://your-server:28080/datafor/content/datafor/ui/';</script>
<script src="http://your-server:28080/datafor/content/datafor/ui/datafor-loader.js"></script>

Vue 3

<template>
  <div ref="containerRef" class="datafor-container"></div>
</template>

<script setup lang="ts">
  import { ref, onMounted, onBeforeUnmount } from 'vue'
  import { onBeforeRouteLeave } from 'vue-router'

  const containerRef = ref<HTMLDivElement>()
  let visualizer: any = null

  onMounted(() => {
    const Datafor = (window as any).Datafor
    if (!Datafor || !containerRef.value) return
    visualizer = new Datafor.Visualizer({
      el: containerRef.value,
      path: '/home/admin/Sales Report.datafor',
      mode: 'edit',
      serverUrl: 'http://your-server:28080',
      jwt: 'your-jwt-token',
    })
  })

  // Save unsaved edits before leaving the route; stay if saving failed
  onBeforeRouteLeave(async () => {
    if (visualizer && visualizer.isPageNotSaved()) {
      return await visualizer.saveBeforeLeave()
    }
  })

  onBeforeUnmount(() => visualizer?.destroy())
</script>

<style scoped>
  .datafor-container {
    width: 100%;
    height: 100%;
  }
</style>

React

import { useEffect, useRef } from 'react';

export default function DataforReport() {
    const containerRef = useRef(null);

    useEffect(() => {
        const visualizer = new window.Datafor.Visualizer({
            el: containerRef.current,
            path: '/home/admin/Sales Report.datafor',
            mode: 'read',
            serverUrl: 'http://your-server:28080',
            jwt: 'your-jwt-token',
        });
        return () => visualizer?.destroy();
    }, []);

    return <div ref={containerRef} style={{ width: '100%', height: '100%' }} />;
}

Notes

• Single instance only: only one instance can exist at a time. Creating a new instance destroys the previous one. To show several reports on one page, use iframe embedding (see Report URLs).
• Container: it must have an explicit width and height. The SDK sets position: relative on it.
• Destroy on route change: in single-page apps, call destroy() when the component unmounts.
• Global request patching: the SDK changes window.fetch and adds a jQuery AJAX hook for the whole page. Relative fetch requests whose URL contains datafor are sent to serverUrl, and these requests, as well as every jQuery AJAX request whose URL contains datafor, carry Authorization: Bearer <jwt>. Keep other requests of your page from matching, and do not send jQuery requests to third-party URLs that contain datafor. The fetch change stays in place after destroy(); the token is removed.
• Style conflicts: SDK styles can affect the host page. Isolate it with an iframe if needed.
• Language: without locale, the SDK uses the user's language from the server; a passed locale wins.