Discord.js机器人发送Embed报错：yourid等变量未定义求助

yourid、productownerid、productname、evalmsg这些变量是在customId == 'evv'的代码块内部用let声明的，变量作用域仅限于该代码块。当用户点击customId为'1'的按钮时，触发的是完全独立的代码逻辑，根本无法访问之前块里的变量，所以会抛出“未定义”错误。

方法1：将数据嵌入按钮的customId（轻量场景推荐） #

在创建按钮时，把需要的变量拼接进customId，点击按钮时再拆分提取数据：

if(interaction.customId == 'evv'){
    let yourid = interaction.fields.getTextInputValue('ask_1')
    let productownerid = interaction.fields.getTextInputValue('ask_2')
    let productname = interaction.fields.getTextInputValue('ask_3')
    let evalmsg = interaction.fields.getTextInputValue('ask_4')
    const exampleEmbed = new MessageEmbed()
    .setColor("RANDOM")
    .setFields(
        { name: '**Buyer-Name**', value: `<@${yourid}>`},
        { name: '**Owner Of The Product**', value:`**<@${productownerid}>**`},
        { name: '**Product**', value:`**${productname}**`},
        { name: '**Message**', value: `**${evalmsg}**`}
    )
    .setFooter(`Requested By ${interaction.user.tag} , ${new Date()}`)
    
    // 把变量拼到按钮customId里，用下划线分隔（如果变量含下划线可换其他分隔符）
    let button25 = new MessageActionRow().addComponents(
        new MessageButton()
            .setCustomId(`1_${yourid}_${productownerid}_${productname}_${evalmsg}`)
            .setLabel("تقييم")
            .setStyle('PRIMARY')
            .setEmoji("💖")
    )
    await interaction.guild.channels.cache.get("1048414164932108289").send({embeds: [exampleEmbed],components:[button25]}) 
}

// 处理带数据的按钮交互
if (interaction.customId.startsWith('1')){
    // 拆分customId获取变量
    const [_, yourid, productownerid, productname, evalmsg] = interaction.customId.split('_');
    
    const exampleEmbed2 = new MessageEmbed()
    .setColor("RANDOM")
    .setFields(
        { name: '**Buyer-Name**', value: `<@${yourid}>`},
        { name: '**Owner Of The Product**', value:`**<@${productownerid}>**`},
        { name: '**Product**', value:`**${productname}**`},
        { name: '**Message**', value: `**${evalmsg}**`},
        { name: '**Evaluation**', value: `**💖**`}
    )
    .setFooter(`Requested By ${interaction.user.tag} , ${new Date()}`)
    
    await interaction.guild.channels.cache.get("1048414164932108289").send({embeds: [exampleEmbed2],components:[]});
    // 必须回复交互，否则Discord会判定超时
    await interaction.deferUpdate();
}

方法2：用Map临时存储消息关联数据（适合复杂数据） #

通过消息ID关联变量，避免customId过长的问题：

// 在代码顶部定义全局Map存储数据
const messageData = new Map();

if(interaction.customId == 'evv'){
    let yourid = interaction.fields.getTextInputValue('ask_1')
    let productownerid = interaction.fields.getTextInputValue('ask_2')
    let productname = interaction.fields.getTextInputValue('ask_3')
    let evalmsg = interaction.fields.getTextInputValue('ask_4')
    const exampleEmbed = new MessageEmbed()
    .setColor("RANDOM")
    .setFields(
        { name: '**Buyer-Name**', value: `<@${yourid}>`},
        { name: '**Owner Of The Product**', value:`**<@${productownerid}>**`},
        { name: '**Product**', value:`**${productname}**`},
        { name: '**Message**', value: `**${evalmsg}**`}
    )
    .setFooter(`Requested By ${interaction.user.tag} , ${new Date()}`)
    
    let button25 = new MessageActionRow().addComponents(
        new MessageButton()
            .setCustomId('1')
            .setLabel("تقييم")
            .setStyle('PRIMARY')
            .setEmoji("💖")
    )
    // 发送消息并保存消息对象
    const sentMessage = await interaction.guild.channels.cache.get("1048414164932108289").send({embeds: [exampleEmbed],components:[button25]});
    // 用消息ID作为key存储变量
    messageData.set(sentMessage.id, { yourid, productownerid, productname, evalmsg });
}

if (interaction.customId == '1'){
    // 通过消息ID获取存储的数据
    const data = messageData.get(interaction.message.id);
    if (!data) {
        return await interaction.reply({ content: "数据已过期或不存在", ephemeral: true });
    }
    
    const exampleEmbed2 = new MessageEmbed()
    .setColor("RANDOM")
    .setFields(
        { name: '**Buyer-Name**', value: `<@${data.yourid}>`},
        { name: '**Owner Of The Product**', value:`**<@${data.productownerid}>**`},
        { name: '**Product**', value:`**${data.productname}**`},
        { name: '**Message**', value: `**${data.evalmsg}**`},
        { name: '**Evaluation**', value: `**💖**`}
    )
    .setFooter(`Requested By ${interaction.user.tag} , ${new Date()}`)
    
    await interaction.guild.channels.cache.get("1048414164932108289").send({embeds: [exampleEmbed2],components:[]});
    await interaction.deferUpdate();
    // 可选：删除已使用的数据，释放内存
    messageData.delete(interaction.message.id);
}

内容的提问来源于stack exchange，提问作者tompano