Epson TM-T88V-i, Руководство пользователя

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151
Chapter 4 ePOS-Print API
4
onerror event
This property registers the callback function and obtains a communication error event.
Syntax
Function (error)
Parameter of the callback function
Parameters: error ( See “Properties of the error object” on page 151. )
Name: Communication error information
Object type: Object
Properties of the error object
Example
Property Name Object type
status HTTP Status Number
responseText Response text String
<script type="text/javascript" src=”epos-print-3.x.x.js"></script>
<script type="text/javascript">
<!--
function printHellowWorld() {
var builder = new epson.ePOSBuilder();
builder.addText('Hello, World!\n');
builder.addCut();
var request = builder.toString();
var address = 'http://192.168.192.168/cgi-bin/epos/service.cgi?devid=local_printer';
var epos = new epson.ePOSPrint(address);
epos.onerror = function (err) {
var status = err.status;
var text = err.responseText;
alert(status);
}
epos.send(request);
}
//-->
</script>
To create and send a print document.
To display the HTTP status code in a message box when a communication error occurs.