JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="ta1">
this is test1
and this is test2
plus it is test3
</textarea>

JavaScript

var ta = document.getElementById('ta1'),
	taText = ta.textContent;
  
  var lines = taText.trim().split('\n');
  
  for(var i in lines){
  	console.log(lines[i][0]);
  }