obj.x = 10and
obj["x"] = 10are equivalent, the dot notation being merely syntactic sugar. Properties and their values can be added, changed, or deleted at run-time. The properties of an object can also be enumerated via a
newcreates a new object and calls that function with its local
thiskeyword bound to that object for that invocation. The function's
prototypeproperty determines the new object's prototype. functions as methods: Unlike many object-oriented languages, there is no distinction between a function definition and a method definition. Rather, the distinction occurs during function calling; a function can be called as a method. When a function is invoked as a method of an object, the function's local
thiskeyword is bound to that object for that invocation.
Furthermore, scripts will not work for all users. For example, a user may:
XSS vulnerabilities can also occur because of implementation mistakes by browser authors.
XSS is related to cross-site request forgery or XSRF. In XSRF one website causes a victim's browser to generate fraudulent requests to another site with the victim's legitimate [cookies] attached to the request.
These flaws have affected major browsers including Firefox, Internet Explorer, and Safari.
MacOSobject for interaction with the operating system and third-party applications.
|Version||Release date||Equivalent to|| Netscape|
|1.3||October 1998||ECMA-262 1st edition / ECMA-262 2nd edition||4.06-4.7x||4.0|
|1.5||November 2000||ECMA-262 3rd edition||6.0||1.0|| 5.5 (JScript 5.5),|
6 (JScript 5.6),
7 (JScript 5.7),
8 (JScript 6)
|1.6||November 2005||1.5 + Array extras + Array and String generics + E4X||1.5|
|1.7||October 2006||1.6 + Pythonic generators + Iterators + let||2.0||3.x|
|1.8||June 2008||1.7 + Generator expressions + Expression closures||3.0|
|1.9||1.8 + New Features||3.1|