var examplevar = "doorknobs";

document.write(giveString()); // use () after the call as it's a function and not a variable (var)
document.write(examplevar); // no () needed as it's a variable



document.write(mergeStrings("lel", " you suck"));


var lel = mergeStrings("lel", "you suck");
document.write(lel); // same as prev. document.write
printString(lel); // same as above

printPredefinedString(); // it calls document.write itself

document.write(printPredefinedStringAndGiveMeSomethingBack()); //prints itself AND as it returns something document.write prints something valid as well







function giveString() { // giving predefined string
    return "pleb";
}

function mergeStrings(var a, var b) {
    return a + b;
}

function printString(var a) {
    document.write(a);
}

function printPredefinedString() {
    document.write("yolo");
}

function printPredefinedStringAndGiveMeSomethingBack() { // as if I can come up with something better
    document.write("yolo");
    return "swag";
}