This page is applicable to version 8.2.3

Javascript API Reference - BarcodeScanner Initialize and Destroy Methods

createInstance

Create a BarcodeScanner object. Overrides BarcodeReader.createInstance.

createInstance(config) returns Promise

Parameters

config_optional any

Return Value

Promise<BarcodeScanner>

test

Sample

let scanner = await Dynamsoft.BarcodeScanner.createInstance();

Read barcodes from live camera

destroy

Destroy the BarcodeScanner object. Equivalent to the previous method deleteInstance(). Overrides BarcodeReader.destroy.

destroy() returns Promise

Return Value

Promise<any>

getUIElement

Get the HTML element containing the BarcodeScanner object.

getUIElement() returns HTMLElement

Return Value

HTMLElement

Sample

Read barcodes from live camera

setUIElement

Set HTML element containing the BarcodeScanner object.

setUIElement(elementOrUrl) returns Promise

Parameters

Return Value

Promise<void>

Sample

<!-- Define an element that shows only the video input -->
<!-- The video element will be created and appended to the DIV element with the class dce-video-container , make sure the class name is the same.
Besides, the CSS property position of the DIV element must be either relative, absolute, fixed, or sticky. -->
<div class="dce-video-container" style="position:relative;width:100%;height:500px;"></div>
<script>
    let scanner = await Dynamsoft.DBR.BarcodeScanner.createInstance();
    await scanner.setUIElement(document.getElementsByClassName("dce-video-container")[0]);
    await scanner.open();
</script>

Read barcodes from live camera

Tips and Tricks

• This API changes the UI on the fly. If you want the UI to change as soon as the camera is created, use defaultUIElementURL instead.