Comments are the code document.
They should explain why, not what. They can optionally explain how if what’s written is particularly confusing.
// This is a single-line comment
/* But this
is a multiline
comment.
*/
var a = /* It can also appears in the middle of an expression */ 42;
console.log(a);
In javascript with the Replace function.
text = "// My beautiful comment\r\nmy beautiful code\r\n";
text = text.replace(/^[/]{2}[^\r\n]+[\r\n]+/mg, "");
console.log(text);
where: