Print a JavaScript string as a string literal

Question

I am attempting to print a string as a string literal in JavaScript, so that the string will be printed exactly as it is written:

printStringLiteral("\n\nHi!");//this prints "Hi!" instead of "\n\nHi!".
                              //What will I need to do in order to print
                              //the string as a string literal instead?

function printStringLiteral(toPrint){
    console.log("\"" toPrint + "\"");
}

Answer 1

您可以使用JSON：

JSON.stringify(toPrint);

Answer 2

printStringLiteral("\\\n\\\nHi!");

function printStringLiteral(toPrint){
    console.log("\\\"" + toPrint + "\\\"");
}