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Javascript -- Getting Started

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By Xiong Ding 1 min read

ECMAScript standard

  • ECMAScript 5 (EC5) came out in 2009
  • ECMAScript 6 (EC6) came out in 2015. Meanwhile, the committee decided to use year to version the standard, so EC6 is also called EC2015.
  • ES2016 aka ES7
  • ES2017 aka ES8
    • string padding
    • Trailing commas
    • Object.values()
    • async/await
  • ES2018 aka ES9
    • Promise.prototype.finally
  • ES2019 aka ES10
  • ES2020 aka ES11
    • nullary coalescing operator: value ?? some default
    • Optional Chaining: book.entities?.hashtags

ES modules

Good article: https://hacks.mozilla.org/2018/03/es-modules-a-cartoon-deep-dive/

esbuild

Hot Module Replacement (HMR)

HMR is different from live reload.

programming-language, javascript
javascript
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