Parse textarea

HTML

<textarea id="myLinesField">aaaaaaaa1
bbbbbbbb2
    
cccccccc3
dddddddd4</textarea>
<textarea id="output"></textarea>

CSS

textarea {
    width: 200px;
    height: 200px;
}

JavaScript

var lines = document.getElementById('Texte1').innerHTML.split('\n');
for(var i = 0;i < lines.length;i++){
    recipientValue = "Pepito"
    
}

var recipientValue = $('#myLinesField').val();
var finalResults = removeStr(recipientValue, 1);
$('#output').val(finalResults);