collision.md

id	PositionConfig.collision
type	Enums.CollisionResolutionCombination | Object

---

shortDescription

Specifies how to resolve collisions - when the overlay element exceeds the boundary element.

---

You can use the following collision resolution algorithms:

• "flip"
  Move the overlay element to the opposite side of the target if that side has more space.

• "fit"
  Move the overlay element to the inside of the boundary element.

• "flipfit"
  First apply "flip", then "fit".

• "none"
  Ignore the collision.

To set the collision property, use an object with the x and y fields. These fields specify how to resolve horizontal and vertical collisions, respectively. Alternatively, you can use a string shortcut from the accepted values list.

---

jQuery

<!-- tab: index.js -->
$(function() {
    $("#popupContainer").dxPopup({
        // ...
        position: {
            // ...
            collision: "flip none"
            // ===== or =====
            collision: { x: "flip", y: "none" }
        }
    });
});

Angular

<!-- tab: app.component.html -->
<dx-popup ... >
    <dxo-position ...
        collision="flip none">
        <!-- or -->
        <dxo-collision x="flip" y="none"></dxo-collision>
    </dxo-position>
</dx-popup>

Vue

<!-- tab: App.vue -->
<template>
    <DxPopup ... >
        <DxPosition
            collision="flip none">
            <!-- or -->
            <DxCollision x="flip" y="none" />
        </DxPosition>
    </DxPopup>
</template>

<script>
import 'devextreme/dist/css/dx.fluent.blue.light.css';

import DxPopup, {
    DxPosition,
    DxCollision
} from 'devextreme-vue/popup';

export default {
    components: {
        DxPopup,
        DxPosition,
        DxCollision
    }
}
</script>

React

<!-- tab: App.js -->
import React from 'react';

import 'devextreme/dist/css/dx.fluent.blue.light.css';

import Popup, {
    Position,
    Collision
} from 'devextreme-react/popup';

class App extends React.Component {
    render() {
        return (
            <Popup ... >
                <Position
                    collision="flip none">
                    {/* or */}
                    <Collision x="flip" y="none" />
                </Position>
            </Popup>
        );
    }
}
export default App;

ASP.NET MVC Controls

<!--Razor C#-->
@(Html.DevExtreme().Popup()
    .Position(p => p
        .Collision(PositionResolveCollision.Flip, PositionResolveCollision.None)
    )
)

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