Glossary Index

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Showing 1,651–1,700 of 2,660 terms.
O
62 terms
Object.getOwnPropertyDescriptor()
The Object.getOwnPropertyDescriptor() static method returns an object describing the configuration of a specific property on a given object (that is, one directly present on an object and not in the object's prototype chain).
Object.getOwnPropertyNames()
The Object.getOwnPropertyNames() static method returns an array of all properties (including non-enumerable properties except for those which use Symbol) found directly in a given object.
Object.getOwnPropertySymbols()
The Object.getOwnPropertySymbols() static method returns an array of all symbol properties found directly upon a given object.
Object.getPrototypeOf()
The Object.getPrototypeOf() static method returns the prototype (i.e., the value of the internal [[Prototype]] property) of the specified object.
Object.groupBy()
Note: In some versions of some browsers, this method was implemented as the method Array.prototype.group().
Object.hasOwn()
The Object.hasOwn() static method returns true if the specified object has the indicated property as its own property.
Object.is()
The Object.is() static method determines whether two values are the same value.
Object.isExtensible()
The Object.isExtensible() static method determines if an object is extensible (whether it can have new properties added to it).
Object.isFrozen()
The Object.isFrozen() static method determines if an object is frozen.
Object.isSealed()
The Object.isSealed() static method determines if an object is sealed.
Object.keys()
The Object.keys() static method returns an array of a given object's own enumerable string-keyed property names.
Object.preventExtensions()
The Object.preventExtensions() static method prevents new properties from ever being added to an object (i.e., prevents future extensions to the object).
Object.prototype.constructor
The constructor data property of an Object instance returns a reference to the constructor function that created the instance object.
Object.prototype.hasOwnProperty()
The hasOwnProperty() method of Object instances returns a boolean indicating whether this object has the specified property as its own property (as opposed to inheriting it).
Object.prototype.propertyIsEnumerable()
The propertyIsEnumerable() method of Object instances returns a boolean indicating whether the specified property is this object's enumerable own property.
Object Cache
The WordPress object cache stores reusable application values through functions such as wp_cache_get() and wp_cache_set().
Observed-Remove Set
A replicated set whose removals target observed additions, allowing a concurrent unseen addition to survive.
offset
The offset CSS shorthand property sets all the properties required for animating an element along a defined path.
offset-anchor
The offset-anchor CSS property specifies the point inside the box of an element traveling along an offset-path that is actually moving along the path.
offset-distance
The offset-distance CSS property specifies a position along an offset-path for an element to be placed.
offset-path
The offset-path CSS property specifies a path for an element to follow and determines the element's positioning within the path's parent container or the SVG coordinate system.
offset-position
The offset-position CSS property defines the initial position of an element along a path.
OOP
OOP (Object-Oriented Programming) is an approach in programming in which data is encapsulated within objects and the object itself is operated on, rather than its component parts.
opacity
The opacity CSS property sets the opacity of an element.
Open Graph Metadata
Open Graph metadata describes a page for services that generate link previews.
order
The order CSS property sets the order to lay out an item in a flex or grid container.
Origin
Web content's origin is defined by the scheme (protocol), hostname (domain), and port of the URL used to access it.
orphans
The orphans CSS property sets the minimum number of lines in a block container that must be shown at the bottom of a page, region, or column.
OTA
Over The Air (OTA) refers to automatic updating of software on connected devices from a central server.
Out-of-order patching
Out-of-order patching refers to delivering HTML content in an order different from the sequential, top-to-bottom flow of a single document.
outline
The outline CSS shorthand property sets the style, color, and width of an element's outline.
outline-color
The outline-color CSS property sets the color of an element's outline.
outline-offset
The outline-offset CSS property sets the amount of space between an outline and the edge or border of an element.
outline-style
The outline-style CSS property sets the style of an element's outline.
outline-width
The CSS outline-width property sets the thickness of an element's outline.
overflow
The overflow CSS shorthand property sets the desired behavior when content does not fit in the element's padding box (overflows) in the horizontal and/or vertical direction.
overflow-anchor
The overflow-anchor CSS property provides a way to opt out of the browser's scroll anchoring behavior, which adjusts scroll position to minimize content shifts.
overflow-block
The overflow-block CSS property sets what shows when content overflows the block start and block end edges of a box.
overflow-inline
The overflow-inline CSS property sets what shows when content overflows the inline start and end edges of a box.
overflow-wrap
The overflow-wrap CSS property applies to text, setting whether the browser should insert line breaks within an otherwise unbreakable string to prevent text from overflowing its line box.
overflow-x
The overflow-x CSS property sets what shows when content overflows a block-level element's left and right edges.
overflow-y
The overflow-y CSS property sets what shows when content overflows a block-level element's top and bottom edges.
overscroll-behavior
The overscroll-behavior CSS property sets what a browser does when reaching the boundary of a scrolling area.
overscroll-behavior-block
The overscroll-behavior-block CSS property sets the browser's behavior when the block direction boundary of a scrolling area is reached.
overscroll-behavior-inline
The overscroll-behavior-inline CSS property sets the browser's behavior when the inline direction boundary of a scrolling area is reached.
overscroll-behavior-x
The overscroll-behavior-x CSS property sets the browser's behavior when the horizontal boundary of a scrolling area is reached.