String

Method

Length

var b = 'I am a JavaScript hacker.'
document.write(b.length)

Replace

var str = "Visit Exeter...";
document.write(str.replace("Exeter", "London"));

Note: The first parameter is a substring or a regular expression.

Trim/Strip

See String

Sample

Note: print is (probably) a doc:narwhal function:

s = 'Patrick';
print(s.length);

// will print 'k':
print(s.charAt(s.length - 1));

// will return 'tri'...
print(s.substring(2, 5));

// will return 3...
print(s.indexOf('r'));

i = 5;
print(i);

// convert to string...
print(i + '');
print(String(i));
print(i.toString());
// will print the string '5.00':
print(i.toFixed(2));

var s = "foo";
alert(s.indexOf("oo") != -1);