Delete a line of text in javascript

Question

In javascript, If i have a text block like so

Line 1
Line 2
Line 3

What would i need to do to lets say delete the first line and turn it in

Answer 1

This removes the first line from a multi-line string variable - tested in Chrome version 23 on a variable which was read from file (HTML5) with line endings/breaks that showed as CRLF (carriage return + line feed) in Notepad++:

var lines = `first
second
third`;

// cut the first line:
console.log( lines.substring(lines.indexOf("\n") + 1) );

// cut the last line:
console.log( lines.substring(lines.lastIndexOf("\n") + 1, -1 ) )

Hope that helps!