Feb 14, 2013 · that is not a keyword in JavaScript. I suspect the code that you have is using something in the class to define an instance of itself. For example: function myClass() { var that = this; } By doing this, you can ensure you're referencing the object, and not another element. For example, consider the following sample:

Jan 15, 2018 · The reserved words in EMCAScript-262 are the Keywords, Future Reserved Words, NullLiteral, and BooleanLiterals, where the Keywords are break do instanceof typeof case else new var catch finally return void continue for switch while debugger function this with default if throw delete in try

Oct 31, 2015 · As far as I know, the ES6 spec does not list it as a reserved keyword. The following tokens are ECMAScript keywords and may not be used as Identifiers in ECMAScript programs. break do in typeof case else instanceof var catch export new void class extends return while const finally super with continue for switch yield debugger function this ...

I can't express this enough: any "with"-like syntax, like the one for JavaScript and Delphi, where you're not explicitly specifying which identifiers belong to the "scoped" object, and which one aren't, are evil, don't use that syntax in those languages. In particular, future changes might change the behavior of that code without warning.

Apr 11, 2017 · Typescript - Working with Other JavaScript Libraries. To describe the shape of libraries not written in TypeScript, we need to declare the API that the library exposes. Because most JavaScript libraries expose only a few top-level objects, namespaces are a …

Aug 13, 2015 · The get keyword will bind an object property to a function. When this property is looked up now the getter function is called. When this property is looked up now the getter function is called. The return value of the getter function then …

Jan 27, 2022 · That is not vanilla JavaScript, it is TypeScript. as any tells the compiler to consider the typed object as a plain untyped JavaScript object. The as keyword is a Type Assertion in TypeScript which tells the compiler to consider the object as another type than the type the compiler infers the object to be.

Jun 2, 2015 · self is not a reserved keyword or standard type, but has become a defacto standard name when for keeping reference to an object for closures. Here we create a closure to pass to setTimeout(). When that closure is executed, this will refer to the global object.

Javascript does not have a python pass equivalent, unfortunately. For example, it is not possible in ...

Jan 31, 2017 · The this keyword behaves differently in JavaScript compared to other languages. In Object Oriented languages, the this keyword refers to the current instance of the class. In JavaScript the value of this is determined by the invocation context of function (context.function()) and where it is called. 1. When used in global context