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PONodejs and TypeError method 'trim' undefined when processing data from streaming
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  1. PONodejs and TypeError method 'trim' undefined when processing data from streaming
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    copied!<p>i have data below from streaming:</p> <pre><code>'ID|20120206|080500|0000001|0|1|record1|END' 'ID|20120206|080500|0000002|0|1|record2|END' 'ID|20120206|080500|0000003|0|1|record3|END' </code></pre> <p>and i want to process the streaming data line by line using nodejs code below:</p> <pre><code>var net = require('net'); var HOST = 'localhost', PORT = 9010, lastSeqNo = 0; var client = new net.Socket(); client.setEncoding('ascii'); client.connect(PORT, HOST, function () { console.log('Connected to: %s : %d', HOST, PORT); }); client.on('close', function (hadError) { console.log(hadError); }); client.on('error', function (ex) { console.log(ex); }); var i = 1; var Line = function (rows, data) { this.SeqNo = parseFloat(rows[3].trim()); this.Date = rows[1].trim(); this.Time = rows[2].trim(); this.MsgType = parseInt(rows[4].trim(), 10); this.Data = data; }; client.on('data', function (data) { var content = data.split('\r\n'); content.forEach(function (item) { if (item.length &gt; 0) { console.log(i, item); i++; var rows = item.split('|'), line = new Line(rows, data), seqNo = line.SeqNo, msgType = line.MsgType; console.log('seqno:', seqNo); } }); }); </code></pre> <p>after a few data line process, i got some error like below:</p> <pre><code>D:\test node\app.js:33 this.SeqNo = parseFloat(rows[3].trim()); ^ TypeError: Cannot call method 'trim' of undefined at new &lt;anonymous&gt; (D:\test node\app.js:33:37) at D:\test node\app.js:48:24 at Array.forEach (native) at Socket.&lt;anonymous&gt; (D:\test node\app.js:42:13) at Socket.emit (events.js:67:17) at TCP.onread (net.js:362:31) </code></pre> <p>could you help me what's wrong with my code above?</p> <p>thank you. greeting from indonesia.</p>
 

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