Overview
The Code39 Decoder is used to enable or disable the Code39 decoder.
Syntax
| code39 (Decoder) <META> Syntax |
|---|
<META HTTP-Equiv="scanner" content="Code39:[parameter]"> |
| code39 JavaScript Object Syntax: |
|---|
| By default the JavaScript Object 'scanner' will exist on the current page and can be used to interact directly with the code39. |
|
To Set code39 parameters via JavaScript use the following syntax: scanner.Parameter = Value;
e.g. scanner.code39 = Value; |
Parameters
Items listed in this section indicate parameters, or attributes which can be set.
| Name | Possible Values | Description | Default Value |
|---|---|---|---|
| code39:[Value] | enabled/disabled | Enables/disables the Code39 decoder. | Device specific |
Requirements
| RhoElements Version | 1.0.0 or above |
|---|---|
| Supported Devices | RhoElements |
| Minimum Requirements | Scanner or Imager module and device supports Code39. |
| Persistence | Transient - Decoder settings are only guaranteed to persist until the Scanner is disabled |
HTML/JavaScript Examples
The following example enables the scanner to read only Code39 labels:
<META HTTP-Equiv="scanner" Content="allDecoders:disabled">
<META HTTP-Equiv="scanner" Content="Code39:enabled">
<META HTTP-Equiv="scanner" Content="enabled">
Above example can also be written as shown below:
<META HTTP-Equiv="scanner" Content="allDecoders:disabled;Code39:enabled;enabled">
or
<META HTTP-Equiv="scanner-all_decoders" Content="disabled">
<META HTTP-Equiv="scanner-Code39" Content="enabled">
<META HTTP-Equiv="scanner-enabled" Content="SCN1">
The following example enables the scanner to read all labels except Code39:
<META HTTP-Equiv="scanner" Content="allDecoders:enabled">
<META HTTP-Equiv="scanner" Content="Code39:disabled">
<META HTTP-Equiv="scanner" Content="enabled">