blocks|key|4119991|text|您可以在message.content上调用.toLowerCase()将其全部转换为小写：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4119992|if+(message.content.toLowerCase()+==+'xd')+{
++message.reply('pong');
}|code-block|syntax|javascript|4119993|这样，消息的大小写实际上被忽略了。|4119994|entityMap^0|4|F|M|E|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

You can call <code>.toLowerCase()</code> on <code>message.content</code> to transform it to all lower case:

<pre><code>if (message.content.toLowerCase() == 'xd') {
 message.reply('pong');
}
</code></pre>

This way the message's casing is practically ignored.

blocks|key|4119739|text|对内容使用toLowerCase，然后对其进行测试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4119740|​|4119741|if(message.content.toLowerCase()+===+'xd')+{
+++message.reply('pong');
}|code-block|syntax|javascript|4119742|4119743|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

use toLowerCase on the content and then test it

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>if(message.content.toLowerCase() === 'xd') {
 message.reply('pong');
}</code></pre>
</div>
</div>

blocks|key|4119786|text|您需要使用toLowerCase()方法将message.content小写，然后将其与"xd+string+using+===+operator“进行比较|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4119787|例如：|4119788|if(message.content+&&+message.content.toLowerCase()+===+'xd')+{
++++message.reply("smh");
}|code-block|syntax|javascript|4119789|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You need to lowercase the message.content using method toLowerCase() method then compare it with "xd string using === operator

ex:

<pre><code>if(message.content &amp;&amp; message.content.toLowerCase() === 'xd') {
 message.reply("smh");
}
</code></pre>

blocks|key|4119849|text|除了toLowerCase()函数之外，还有两种允许多个参数的主要方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4119850|第一种方法是使用%7C%7C运算符或or运算符。这种方法允许您检查完全不同的单词，同时能够获得相同的结果。例如：|4119851|if+(message.content+==+"xd"+%7C%7C+message.content+==+"xD"+%7C%7C+message.content+==+"XD")+{+
+++++message.reply("Why+would+you+do+that");
}|code-block|syntax|javascript|4119852|第二种方法是使用正则表达式，如正则表达式。正则表达式使用.test()方法检查字符串中的单词。例如：|4119853|let+myRegex+=+/xd/i;
if+(myRegex.test(message.content))+{+//We+are+assuming+that+message.content+=+"XD"
+++message.reply("smh");
}|4119854|此方法之所以有效，是因为正则表达式会检查单词是否等于它所赋值的正则表达式。/xd/后面的i意味着它不关心大小写，所以这是一种检查特定单词的更短的方法，而不关心字母大小写。|4119855|entityMap^0|2|D|0|8|2|E|2|0|0|S|7|0|0|11|4|18|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|17|8|@$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|T|$]]

There are 2 other main ways to allow for multiple parameters besides the <code>toLowerCase()</code> function.

The first way would be to use the <code>||</code> operator or the <code>or</code> operator. This method allows for you to check for completely different words while being able to have the same outcome. For example:

<pre><code>if (message.content == "xd" || message.content == "xD" || message.content == "XD") { 
 message.reply("Why would you do that");
}
</code></pre>

The second way would be to use regular expressions like regexes. Regexes check for words inside strings by using the <code>.test()</code> method. For example:

<pre><code>let myRegex = /xd/i;
if (myRegex.test(message.content)) { //We are assuming that message.content = "XD"
 message.reply("smh");
}
</code></pre>

This method works because the regex checks whether the word is equal to the regex it is assigned to. The <code>i</code> after the <code>/xd/</code> means that it doesn't care about the casing so this is a shorter way to check for certain words without caring about letter case.

blocks|key|4120174|text|一种更好的方法是使用别名...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4120175|//defined+early+on.
let+commands+=+[
++++{
++++++++aliases:["xd","lol",":smile:"],
++++++++run:function(msg){
++++++++++++msg.send(`pong`);
++++++++}
++++},
++++{
++++++++aliases:[":("],
++++++++run:function(msg){
++++++++++++msg.send(`why+the+long+face?`);
++++++++}
++++}
]
//later
client.on(`message`,function(msg){
++++for(let+i+=0;i<commands;i%2B%2B){
++++++++if(commands[i].includes(msg.content.toLowerCase())){
++++++++++++commands[i].run();
++++++++}
++++}
});|code-block|syntax|javascript|4120176|当你想让多个东西运行同一个命令时，上面回答的string.toLowerCase并不总是有效的。|offset|length|style|CODE|4120177|上面的代码允许每个命令使用别名|4120178|entityMap^0|0|0|M|I|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

A better way todo this is have aliases...

<pre><code>//defined early on.
let commands = [
 {
 aliases:["xd","lol",":smile:"],
 run:function(msg){
 msg.send(`pong`);
 }
 },
 {
 aliases:[":("],
 run:function(msg){
 msg.send(`why the long face?`);
 }
 }
]
//later
client.on(`message`,function(msg){
 for(let i =0;i&lt;commands;i++){
 if(commands[i].includes(msg.content.toLowerCase())){
 commands[i].run();
 }
 }
});
</code></pre>

<code>string.toLowerCase</code> as answered above doesn't always work when you want multiple things to run the same command. 
The code above allows aliases for every commands

Need some help with my code. I started coding my first Discord bot today using Node.JS and the Discord.JS library, and others soon. I am currently using a YouTube video to guide me through Node.JS. Here's my question.

Here is my current code.

<pre><code>const Discord = require('discord.js');
const bot = new Discord.Client();

bot.on('message', (message) =&gt; {

 if(message.content == 'ping') {
 message.reply('pong');
 }

 if(message.content == 'xd') {
 message.reply('smh');
 }

});
</code></pre>

This code works fine. If you go over to the second <code>message.content</code>, it has <code>'xd'</code> written inside it. When I write the word xd in my Discord server, the bot will return <code>smh</code>. The problem with this is that the bot will only return <code>smh</code> when the capitalization is exactly like it is in <code>xd</code>, but I want it to work for all capitalization.

Like this.

<pre><code> if(message.content == 'xd', 'xD', 'XD', 'Xd',) {
 message.reply('pong');
}
</code></pre>

Obviously, the above code doesn't work, but is there any easy way to do this?

Cheers.

How can I add multiple parameters to message.content?

服务器

我的代码需要一些帮助。今天，我开始使用Node.JS和Discord.JS库以及其他工具编写我的第一个Discord机器人。我现在正在使用一个YouTube视频来引导我通过Node.JS。这是我当前的代码。const Discord = require('discord.js');const bot = new Dis...

问如何向message.content添加多个参数？
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