This example uses OpenLayers v10.9.0. The latest is v.
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#### Modify an extent

Extent 5 interaction 6 box 5 bbox 5 modify 11 resize 1

#####

Using the Extent interaction to modify an extent.

This example shows how to use an `Extent` interaction to modify a given extent, by moving its corners or edges.

##### main.js

    import Map from 'ol/Map.js';
    import View from 'ol/View.js';
    import {never} from 'ol/events/condition.js';
    import ExtentInteraction from 'ol/interaction/Extent.js';
    import TileLayer from 'ol/layer/Tile.js';
    import {transformExtent} from 'ol/proj.js';
    import OSM from 'ol/source/OSM.js';

    const map = new Map({
      layers: [
        new TileLayer({
          source: new OSM(),
        }),
      ],
      target: 'map',
      view: new View({
        center: [0, 0],
        zoom: 2,
      }),
    });

    const extent = new ExtentInteraction({
      extent: transformExtent([-10, -10, 10, 10], 'EPSG:4326', 'EPSG:3857'),
      createCondition: never, // do not create a new extent on pointer down
      drag: true, // drag existing extent
      boxStyle: {
        'fill-color': 'rgba(255, 255, 255, 0.4)',
        'stroke-color': '#3399CC',
        'stroke-width': 1.25,
      },
    });
    map.addInteraction(extent);

##### index.html

    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8">
        <title>Modify an extent</title>
        <link rel="stylesheet" href="node_modules/ol/ol.css">
        <style>
          .map {
            width: 100%;
            height: 400px;
          }
        </style>
      </head>
      <body>
        <div id="map" class="map"></div>

        <script type="module" src="main.js"></script>
      </body>
    </html>

##### package.json

    {
      "name": "extent-interaction-modify",
      "dependencies": {
        "ol": "10.9.0"
      },
      "devDependencies": {
        "vite": "^3.2.3"
      },
      "scripts": {
        "start": "vite",
        "build": "vite build"
      }
    }