ReadFileLine
Read file line by line for node
Install
$ npm install readfileline -g
How to use
var fl = require('readfileline');var fileContents = [];fl(__dirname+'/data.txt',function(lineData,lineNum){fileContents.push(lineData);console.log(lineNum+':'+lineData+'\n');},function(err,eventType,totalLineNum){if(eventType=='end'){//if file read all line to success, "close" event still will emit, so you need distinguish between theyconsole.log('read line is done, total '+totalLineNum+' line(s)');}if(eventType=='close'){console.log('read line is closed, read to '+totalLineNum+' line(s)');}if(eventType=='error'){console.log('read file line has an error:'+err.message);}});//--------var fileContents2=[];fl(__dirname+'/data.txt',function(lineData,lineNum){var thisFL = this;if(lineNum>=5){this.close(); //And also has a function is "this.stop()", but it still emit "close" event so you still need listen "close" event, so mustn't listen "stop" eventreturn;}fileContents2.push(lineData);console.log(lineNum+':'+lineData+'\n');},function(err,eventType,totalLineNum){if(eventType=='end'){//if file read all line to success, "close" event still will emit, so you need distinguish between theyconsole.log('read line is done, total '+totalLineNum+' line(s)');}if(eventType=='close'){console.log('read line is closed, read to '+totalLineNum+' line(s)');}if(eventType=='error'){console.log('read file line has an error:'+err.message);}});