The get syntax binds an object property to a function that will be called when that property is looked up. It can also be used in classes.... Try it Syntax js { get prop() { /* … */ } } {...function in an object initializer. js const obj = { get prop() { //...
Learn about the OES_draw_buffers_indexed interface, including its methods, code examples, specifications, and browser compatibility.... js const ext = gl.getExtension(...for a particular draw buffer. js // For gl.DRAW_BUFFER0 ext.enableiOES(gl...
The left shift assignment (<<=) operator performs left shift on the two operands and assigns the result to the left operand.... Try it Syntax js x <<= y Description x <<= y is...Examples Using left shift assignment js let a = 5; // 00000000000000000000...
The unsigned right shift assignment (>>>=) operator performs unsigned right shift on the two operands and assigns the result to the left operand.... Try it Syntax js x >>>= y Description x >>>= y...unsigned right shift assignment js let a = 5; // (00000000000000000000)...
The import() syntax, commonly called dynamic import, is a function-like expression that allows loading an ECMAScript module asynchronously and dynamically into a potentially non-module environment.... Syntax js import(moduleName) import(moduleName...example, import attributes : js import("./data.json", { with:...
The undefined global property represents the primitive
value undefined. It is one of JavaScript's
primitive types.... js // DON'T DO THIS (() => { const...statement evaluates to true. js let x; if (x === undefined) {...
Private properties are counterparts of the regular class properties which are public, including class fields, class methods, etc. Private properties get created by using a hash # prefix and cannot be legally referenced outside of the class. The privacy encapsulation of these class properties is enforced by JavaScript itself. The only way to access a private property is via dot notation, and you can only do so within the class that defines the private property.... Syntax js class ClassWithPrivate { #privateField;...declared properties with delete . js class ClassWithPrivateFiel {...
The null value represents the intentional absence of any object value. It
is one of JavaScript's primitive values and
is treated as falsy for boolean operations.... Try it Syntax js null Description The value null...expected but no object is relevant. js // foo does not exist. It is...
The increment (++) operator increments (adds one to) its operand and returns the value before or after the increment, depending on where the operator is placed.... Try it Syntax js x++ ++x Description The ++ operator...increment operators together. js ++(++x); // SyntaxError: Invalid...
Learn about the message event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.... js addEventListener("message", (event)...<iframe> , using code like this: js const targetFrame = window.top...