строка

js/script.js

var str0 = 'Hello World!';
var str1 = "Привет Мир!"
var str2 = "";
var str3 = 'Hello World! \
Привет Мир! \
To be or not to be?';
var str4 = 'Lugansk';
var str5 = '255';
function funMake() {
document.write(str0 + '<br />');
document.write(str1 + '<br />');
document.write(str2 + '<br />');
document.write(str3 + '<br />');
document.write('\"Hello World!\"<br />');
document.write("\'Привет Мир!\'<br />");
for(var i=0; i<str4.length; i++) {
document.write(str4[i] + '    ');
}
document.write('<br />' + typeof(str5));
}

var str0 = 'Hello World!';
var str1 = "Привет Мир!"
var str2 = "";
var str3 = 'Hello World! \
Привет Мир! \
To be or not to be?';
var str4 = 'Lugansk';
var str5 = '255';

function funMake() {
 document.write(str0 + '
');
 document.write(str1 + '
');
 document.write(str2 + '
');
 document.write(str3 + '
');
 document.write('\"Hello World!\"
');
 document.write("\'Привет Мир!\'
");
 for(var i=0; i' + typeof(str5));
}

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
<script src="js/script.js"></script>
</head>
<body>
<script>
funMake();
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
<script src="js/script.js"></script>
</head>
<body>
<script>
funMake();
</script>
</body>
</html>