Javascript “如何修复”;词法声明不能出现在单个语句上下文中;

Javascript “如何修复”;词法声明不能出现在单个语句上下文中;,javascript,node.js,discord,Javascript,Node.js,Discord,当我进行嵌入并运行bot时,此处出现问题,因为我使用了let embeddehelp=Discord.RichEmbed。此问题出现在终端中,请键入问题以及需要修复的内容: SyntaxError: Lexical declaration cannot appear in a single-statement context at new Script (vm.js:79:7) at createScript (vm.js:251:10) at Object.runInThis

当我进行嵌入并运行bot时,此处出现问题,因为我使用了let embeddehelp=Discord.RichEmbed。此问题出现在终端中,请键入问题以及需要修复的内容:

SyntaxError: Lexical declaration cannot appear in a single-statement context
   at new Script (vm.js:79:7)
   at createScript (vm.js:251:10)
   at Object.runInThisContext (vm.js:303:10)
   at Module._compile (internal/modules/cjs/loader.js:657:28)
   at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
   at Module.load (internal/modules/cjs/loader.js:599:32)
   at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
   at Function.Module._load (internal/modules/cjs/loader.js:530:3)
   at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
   at startup (internal/bootstrap/node.js:283:19) 
我用于嵌入的代码是:

client.on('message', message => {
    if (message.startsWith('$Commands'))

    let EmbedHelp = Discord.RichEmbed()
        "title": "title ~~(did you know you can have markdown here too?)~~",
        "description": "```",
        "url": "https://discordapp.com",
        "color": 192748,
        "timestamp": "Timezone - GGT 3+",
        "footer": {
            "icon_url": "https://cdn.discordapp.com/avatars/563449221701959700/8386d5fe48d71898c40244e7a5a66d58.png",
            "text": "footer text"
        },
        "thumbnail": {
            "url": "https://cdn.discordapp.com/avatars/563449221701959700/8386d5fe48d71898c40244e7a5a66d58.png"
        },
        "image": {
            "url": "https://cdn.discordapp.com/embed/avatars/0.png"
        },
        "author": {
            "name": "Galak$y#3038",
            "url": "https://discordapp.com",
            "icon_url": "https://discordapp.com/channels/564059839320555540/569179399211974666"
        },

    }
});
channel.send({EmbedHelp})



该错误指的是
Discord.RichEmbed()
下面的行。您有一个对象属性声明,但看不到任何对象。看起来你把一些你想从Discord docs中得到的东西混在一起了

旨在与其他助手方法链接。如果您将代码放入一个对象中(用大括号括起来)并将其传递到一个
send
方法中,那么应该可以消除该错误

client.on('message', message => {
    if (message.startsWith('$Commands')) {

   message.channel.send({ embed: {
        "title": "title ~~(did you know you can have markdown here too?)~~",
        "description": "```",
        "url": "https://discordapp.com",
        "color": 192748,
        "timestamp": "Timezone - GGT 3+",
        "footer": {
            "icon_url": "https://cdn.discordapp.com/avatars/563449221701959700/8386d5fe48d71898c40244e7a5a66d58.png",
            "text": "footer text"
        },
        "thumbnail": {
            "url": "https://cdn.discordapp.com/avatars/563449221701959700/8386d5fe48d71898c40244e7a5a66d58.png"
        },
        "image": {
            "url": "https://cdn.discordapp.com/embed/avatars/0.png"
        },
        "author": {
            "name": "Galak$y#3038",
            "url": "https://discordapp.com",
            "icon_url": "https://discordapp.com/channels/564059839320555540/569179399211974666"
        },

    }});
}
});

我有以下代码:

                let viewShareSelectBoxInitializedInterval = setInterval(function () {
                    if (IsViewShareSelectBoxInitialized() === true) {
                        clearInterval(viewShareSelectBoxInitializedInterval);
                        ReloadViewShareItems(endItemStateIdForSharing);
                    }
                }, 250);  
我将
let
更改为
var
,然后工作正常


在我的开发机器上,它可以与
let
一起工作,但是当JavaScript与
let
捆绑在一起时,它会失败。

这就是它所说的<代码>如果(…)让嵌入式帮助=无效。你想让条件做什么?而且
embeddehelp
下的整个部分应该在映射中吗?如果你在
If
中放入多个语句,你需要
{}
围绕它们。。。。如果您没有在
if
中放入多个语句,那么
let
声明几乎毫无意义