Properti String.length mengembalikan banyaknya karakter di dalam string, termasuk whitespace.
Sintaks:
stringObj.length
String.length adalah properti standard JavaScript 1.0+, JScript 1.0+, ECMAScript 1.0+ dan di dukung Google Chrome Beta+, Firefox 1.0 (Gecko 1.7)+, IE 3+, Netscape Navigator 2.0+, Opera 3.0+, Safari 1.0+.
Contoh 1:
var stringObj = new String("ABC");
document.write(stringObj.length); // 3
Contoh 2:
var stringObj = new String("A B C");
document.write(stringObj.length); // 5
Contoh 3:
var stringObj = new String("\"ABC\"");
document.write(stringObj.length); // 5
