Google Apps脚本支持哪种版本的ECMA-262？ [英] Which Edition of ECMA-262 Does Google Apps Script Support?

问题描述

根据此主题从旧版Google群组，Apps脚本基于ECMA-262第3版。

$编辑器中的自动完成显示第3版数组函数。但是下面的代码运行得很好，这让人对此事产生怀疑：

  var array = [
 1 ，2,3,4,5 
]; 
 
 Logger.log（forEach：）; 
 array.forEach（function（item，idx，arr）{
 Logger.log（item）; 
}）; 
  

请注意ECMA-262 5th Edition数组函数forEach。

某个权威性的头脑会给出明确的答案，为什么会出现这种情况？是否可以安全地依赖所有的第5版功能或已经实现并似乎可行的子集？ 最新文档（2013年6月）表示，Apps脚本提供了一个子集 ECMAScript 5 ，基于 JavaScript 1.8 。

编辑： Google有些回退。截至2013年11月，他们报告说Apps脚本基于1.6，仅有1.7和1.8。

According to this thread from the old Google Group, Apps Script is based on ECMA-262 3rd Edition.

This would seem to be supported by the fact that auto-completion in the editor displays 3rd Edition array functions.

However the following code runs perfectly well, which casts doubt on the matter:

var array = [
  1,2,3,4,5
];

Logger.log("forEach:");
array.forEach(function (item,idx,arr) {
  Logger.log(item); 
});

Note the use of ECMA-262 5th Edition Array function forEach.

Would someone authoritative mind giving a definitive answer on why this is the case? And whether it's safe to rely on all 5th Edition features or a sub-set that have been implemented and seem to work?

解决方案

The current documentation (June 2013) says Apps Script provides a subset of ECMAScript 5 and is based on JavaScript 1.8.

Edit: Google has backtracked somewhat. As of Nov 2013, they are reporting that Apps Script is based on 1.6, with a smattering of 1.7 and 1.8.

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