String in ECMAScript 262

Basic object.

Strings may be constructed using the var foo = new String('string content') constructor, or simply the string literal var foo = 'string content'. Strings defined using a string literal cannot have custom properties, whereas strings defined using the new String("...") constructor can:

var msg1 = "Hello World";
var msg2 = new String("Hello World");
msg1.foo=99;
msg2.foo=99;
// ** msg1.foo is undefined
// ** msg2.foo is 99

Strings may be delimited by either " or ' in pairs; there is no difference between the two other than which is convenient for the particular application. Either character may be used inside such a string by escaping it with a backslash (\).

var msg1 = "Hello World!";
var msg2 = 'Hello World';
var storeName = "Gavin's House of Chips";
var nickName = 'Gavin "The Burninator" Kistner';
var quote = "Did he really say, \"Bob's your uncle?\"";

The shortest (albeit perhaps not the most clear) way of converting any other object type into a string is to concatenate an empty string onto the object. Doing so implicitly calls the toString() method of that object:

var myAge=12;
var myAgeAsString = myAge+"";