小编lon*_*lon的帖子

问题是:

longhao33@hePC:~$ node --harmony test.js 
/home/longhao33/test.js:1
(function (exports, require, module, __filename, __dirname) { let str = 'es666666666666';
                                                              ^^^

SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:413:25)
    at Object.Module._extensions..js (module.js:452:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:475:10)
    at startup (node.js:117:18)
    at node.js:951:3

但是:"让"在以下情况下得到支持:(太奇怪了!)

longhao33@hePC:~$ node --harmony
> let str = 'es66666666666'
undefined
> str
'es66666666666'

1. 系统:ubuntu 14.04LTS 64bit
2. node:V4.1.1(由nvm安装,安装在$ HOME)

3. test.js的内容:

   让str ='es666666666666'; 的console.log(STR);

提前谢谢.