Jade意外长度错误

Jade unexpected length error

本文关键字：错误 意外 Jade      更新时间：2023-09-26

如何处理此问题？我的玉石档案是：

extends layout
block content
    h1.
        User List
    ul
        each user, i in userlist
            li
                a(href="mailto:#{user.email}")= user.username

我得到以下错误：

TypeError: C:'node'nodetest1'views'userlist.jade:7
    5|         User List
    6|     ul
  > 7|         each user, i in userlist
    8|             li
    9|                 a(href="mailto:#{user.email}")= user.username
Cannot read property 'length' of undefined
    at eval (eval at <anonymous> (C:'node'nodetest1'node_modules'jade'lib'jade.js:174:8), <anonymous>:56:31)
    at eval (eval at <anonymous> (C:'node'nodetest1'node_modules'jade'lib'jade.js:174:8), <anonymous>:99:4)
    at eval (eval at <anonymous> (C:'node'nodetest1'node_modules'jade'lib'jade.js:174:8), <anonymous>:112:22)
    at res (C:'node'nodetest1'node_modules'jade'lib'jade.js:175:38)
    at Object.exports.render (C:'node'nodetest1'node_modules'jade'lib'jade.js:300:10)
    at Object.exports.renderFile (C:'node'nodetest1'node_modules'jade'lib'jade.js:336:18)
    at View.exports.renderFile [as engine] (C:'node'nodetest1'node_modules'jade'lib'jade.js:321:21)
    at View.render (C:'node'nodetest1'node_modules'express'lib'view.js:76:8)
    at Function.app.render (C:'node'nodetest1'node_modules'express'lib'application.js:527:10)
    at ServerResponse.res.render (C:'node'nodetest1'node_modules'express'lib'response.js:900:7)

显然您还没有将userlist对象发送给Jade。你需要这样渲染它：

res.render('userlist', {userlist: userlist});

第三次出现userlist的地方是您的对象。

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