This is, unfortunately, many developers’ first roadblock when getting started with WebAssembly. They assume that if they just have rustc installed and pass a –target=wasm flag that they’ll get something they could load in a browser. You may be able to get a WebAssembly file doing that, but it will not have any of the required platform integration. If you figure out how to load the file using the JS API, it will fail for mysterious and hard-to-debug reasons. What you really need is the unofficial toolchain distribution which implements the platform integration for you.
// 测试用例验证（和你的逻辑完全匹配），推荐阅读heLLoword翻译官方下载获取更多信息
，更多细节参见safew官方版本下载
Why the FT?See why over a million readers pay to read the Financial Times.
Joel Kowsky/NASA via Getty Images。旺商聊官方下载对此有专业解读