mdn_bot

A bot that tweets random MDN Javascript articles. Not in any way affiliated with Mozilla or MDN.

Created by: @chris_dickow

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arguments is an Array-like object accessible inside functions that contains the values of the arguments passed to that function. https://t.co/jy0paaYBW1

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The logical AND (&&) operator (logical conjunction) for a set of
operands is true if and only if all of its operands are true. It is typically used with
Boolean (logical) values. When it is, it returns a Boolean value. However,
the && operat... https://t.co/tK37cLb11v

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The JavaScript exception "can't define property "x": "obj" is not extensible" occurs
when Object.preventExtensions() marked an object as no longer extensible,
so that it will never have properties beyond the ones it had at the time it was mark... https://t.co/GvOmtEqQzv

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The JavaScript exception "missing : after property id" occurs when objects are created
using the object
initializer syntax. A colon (:) separates keys and values for the
object's properties. Somehow, this colon is missing or misplaced.
https://t.co/lja9kfhdPK

[mdn_bot @MdnBot]

Warning: Executing JavaScript from a string is an enormous security
risk. It is far too easy for a bad actor to run arbitrary code when you use
eval(). See Never use eval()!, below.
https://t.co/LzbH8Xo03T

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The constructor method is a special method of a class for creating and initializing an object instance of that class. https://t.co/LS39GDYSCo

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The super keyword is used to access and call functions on an object's
parent.
https://t.co/5547cQbTqX

[mdn_bot @MdnBot]

The JavaScript exception "missing : after property id" occurs when objects are created
using the object
initializer syntax. A colon (:) separates keys and values for the
object's properties. Somehow, this colon is missing or misplaced.
https://t.co/lja9kfhdPK

[mdn_bot @MdnBot]

The unsigned right shift operator (>>>)
(zero-fill right shift) shifts the first operand the specified number of bits to the
right. Excess bits shifted off to the right are discarded. Zero bits are shifted in from
the left. The sign bit beco... https://t.co/cins6Hjz7I

[mdn_bot @MdnBot]

The JavaScript exception "invalid assignment left-hand side" occurs when there was an
unexpected assignment somewhere. For example, a single "=" sign was used
instead of "==" or "===".
https://t.co/4mQ6XCZMj7

[mdn_bot @MdnBot]

Starting with ECMAScript 2015, a shorter syntax for method definitions on objects
initializers is introduced. It is a shorthand for a function assigned to the method's
name.
https://t.co/SDSU3UE5Xn

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The class declaration creates a new class
with a given name using prototype-based inheritance.
https://t.co/Dm0zsiXlSM

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The Generator object is returned by a generator function and it conforms to both the iterable protocol and the iterator protocol. https://t.co/gjrNrIuRJm

[mdn_bot @MdnBot]

The unsigned right shift operator (>>>)
(zero-fill right shift) shifts the first operand the specified number of bits to the
right. Excess bits shifted off to the right are discarded. Zero bits are shifted in from
the left. The sign bit beco... https://t.co/cins6Hjz7I

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The less than operator (<) returns true if the left operand is less than the right operand, and false otherwise. https://t.co/RbUU3m81xJ

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The if statement executes a
statement if a specified condition is truthy. If the condition is
falsy, another statement can be executed.
https://t.co/NexErj2mnu

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The set syntax binds an object
property to a function to be called when there is an attempt to set that
property.
https://t.co/klkTHIpnwM

[mdn_bot @MdnBot]

Both static and instance public fields are writable, enumerable, and configurable
properties. As such, unlike their private counterparts, they participate in prototype
inheritance.
https://t.co/O590lnuXYQ

[mdn_bot @MdnBot]

The throw statement throws a user-defined exception.
Execution of the current function will stop (the statements after throw
won't be executed), and control will be passed to the first catch
block in the call stack. If no catch block exists ... https://t.co/gVhTawkMhV

[mdn_bot @MdnBot]

The extends keyword is used in class declarations or
class expressions to
create a class that is a child of another class.
https://t.co/jJ4cHCjAFp