Chrome 62/Chrome Canary 64中的ES6模块支持在本地不起作用，CORS错误 [英] ES6 module support in Chrome 62/Chrome Canary 64, does not work locally, CORS error
问题描述
Index.html
Index.html
<html>
<head>
<script type="module">
import {answer} from './code.js'
console.info("It's ${answer()} time!")
</script>
</head>
<body>
</body>
</html>
code.js
export function answer(){
return 'module';
}
错误:CORS策略阻止了对源'null'处'file:///C:*******/es6/code.js'处脚本的访问:无效的响应.因此，不允许访问原始空".
Error: Access to Script at 'file:///C:*******/es6/code.js' from origin 'null' has been blocked by CORS policy: Invalid response. Origin 'null' is therefore not allowed access.
Chrome表示它可以支持模块，并且我在网上看到了一些示例，但是当我复制下载的示例并在本地运行它们时，总是会遇到上述错误.我不想使用Babel，Webpack等.
Chrome says it can support modules and I have seen examples working on the web, but when I copy them of download and run them locally, I always get the error above. I do not want to use Babel, Webpack, etc.
我尝试过在Chrome和Chrome Canary中启用实验性Web平台功能"标志.
I have tried enabling the Experimental Web Platform features flag in both Chrome and Chrome Canary.
推荐答案
Unlike regular scripts, ES6 modules are subject to same-origin policy. This means that you cannot import them from the file system or cross-origin without a CORS header (which cannot be set for local files).
基本上，您需要从(本地)服务器上运行此代码，或者在浏览器中禁用相同来源的代码以进行测试(请不要永久执行此操作).请参阅:从来源访问图像' null"已被CORS政策阻止.
Basically you need to run this code from a (local) server or disable same-origin in the browser for testing (do not do this permanently). See: Access to Image from origin 'null' has been blocked by CORS policy.
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