![]() Template literals are string literals that can stretch across multiple lines and include interpolated expressions (inserted via $). Web templates (data): HTML with blanks to be filled in.Tagged template literals (code): function calls.Template literals (code): multi-line string literals that support interpolation.It is therefore important to distinguish: Do you know more such ECMAScript 6 feature lists ECMAScript 6 Features (by Luke Hoban) Learn ES2015 - A detailed overview of ECMAScript 6 features (by. Fork this project on Github, edit the file features.txt and then please send a pull request. These two literals have similar names and look similar, but they are quite different. The source is the file features.txt, everything else on is just generated out of it. The following operations ignore symbols as property keys:ĮS6 has two new kinds of literals: template literals and tagged template literals. The following operations are aware of symbols as property keys: ![]() 30.4.4 Which operations related to property keys are aware of symbols? # toString () // 'Symbol(desc)'įorbidding coercion prevents some errors, but also makes working with symbols more complicated. You can now specify integers in binary and octal notation:Ĭonst str2 = String ( sym ) // 'Symbol(desc)' const str3 = sym. For example:ģ0.2 New number and Math features # 30.2.1 New integer literals # ![]() New functionality in the standard library.Better syntax for features that already exist (e.g.There are three major categories of features: ![]() The built-ins are now extensible via subclassing. The ECMAScript library of built-ins has been expanded to support additional data abstractions including maps, sets, and arrays of binary numeric values as well as additional support for Unicode supplemental characters in strings and regular expressions. Some of major enhancements include modules, class declarations, lexical block scoping, iterators and generators, promises for asynchronous programming, destructuring patterns, and proper tail calls. ![]() Hence in theory specifying the version is not. The introduction of the ES6 specification lists all new features: Therefore, ES6 is designed to not have any breaking changes and none of the previous features are removed. Executing asynchronous functions in parallel Which operations related to property keys are aware of symbols? Pitfall: you can’t coerce symbols to strings Use case 2: constants representing concepts This chapter collects the overview sections of all the chapters in this book. ![]()
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