Code CR1500 Programming Guide

D028868 CR1500 CR1100 CR2700 JavaScript Programming Guide User Manual Page 31 of 41
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This example shows the use of a regular expression that matches a specific pattern of
decode data, then the use of a JavaScript method to remove the last digit from the matched
decode data.
Example:
rules_onDecodes = function(decodes)
{
if(decodes[0].data.match(/^[0-9]{9}$/g)!= null)
decodes[0].data = decodes[0].data.substring(
0, decodes[0].data.length - 1);
return decode;
};
rules_onDecodeAttempt
The rules_onDecodeAttempt()function is run when a call to the default
reader.onDecodeAttempt()is made. rules_onDecodeAttempt()is passed the
length of the decodes array (Section 13.1.1).
rules_onDecode
The rules_onDecode()function is run when a call to the default
reader.onDecodes()is made. rules_onDecode()is passed an individual decode
object, and is called for each decode object contained in the decodes array.
The rules_onDecode()function must return either the decode object or the value
“false”. Returning “false” will stop further action by the reader.onDecode() function.
rules_onEvent
rules_onEvent() will be called whenever a userEvent is utilized. The user event
numbers are restricted to event_user0 through event_user9. The most common use of this
will be to implement some logic, based on the press of a button or to send a read-failure
notification. Users can pre-handle any of the following events. Returning a “false” lets the
firmware process the event, while returning a “true” tells the firmware that the event has
been handled and needs no further processing.
In the example below, the reader is first set to intercept a button press. The reader will then
send a codeXml enter keypress over the comm port. See the CR8200 CCD, Code Document
Number D026160 for more information.
Example:
var enter = "\x01X\x1ean//n\x04";
rules_onEvent = function(event)
{
if (event.type == buttonPress)
{
comm.sendPacket(enter);
return true; // tell the firmware that we handled the press
}
};

Code CR1500 Specifications

General

Brand	Code
Model	CR1500
Category	Barcode Reader
Language	English