What is the correct way to write to casperjs file?

Question

JavaScript

Hello, I want to write the results of parsing to a text file, then import the data into the database. But I ran into a problem, he writes each entry to a new line, for example:

data1;
data2;
data3; 

data1; 
data2;
data3;

and I would like it to be like this:

data1;data2;data3
data1;data2;data3

I write like this:

var content = data.data1 + ";" + data.data2 + ";" + data.data3 + "\n";
fs.write('myfile.txt', content, 'a')