What is dot notation?
Dot notation is one way to access a property of an object. To use dot notation, write the name of the object, followed by a dot (.), followed by the name of the property.
The difference is in how x is interpreted. When using a dot, the part after the dot must be a valid variable name, and it directly names the property. When using square brackets, the expression between the brackets is evaluated to get the property name.
What does 3 dots mean in JS?
What is the DOT called in programming?
The dot (.) operator is used for direct member selection via object name. In other words, it is used to access the child object.
What does a dot mean in Python?
In general, dot notation tells Python to look inside the space that is before the dot for code to execute. You can use dot notation to access the specific version of a certain function that is defined in a different class or a different module.
What is the dot operator?
The . (dot) operator is used to access class, structure, or union members. The member is specified by a postfix expression, followed by a . (dot) operator, followed by a possibly qualified identifier or a pseudo-destructor name.
What is JSON format?
The in operator returns true if the specified property is in the specified object or its prototype chain.
Why ! Is false?
! evaluates to false because the reference is truthy.  can be converted to an number (0 in this case) which is falsey. Therefore: the condition passes as equal.
What is object in HTML?
The <object> HTML element represents an external resource, which can be treated as an image, a nested browsing context, or a resource to be handled by a plugin.