Question

在Meteor 0.7.1.2上，Session变量用于反应性地更改查询结果。当我在浏览器控制台中手动设置Session变量时：

> Session.set('game', 'Tron')

Exception from Deps recompute: TypeError: Cannot read property 'previousSibling' of null

接下来我尝试了以下操作，没有产生任何错误

> Session.set('game', 'Tron')
undefined

接下来我尝试了以下内容，该游戏另一个错误（下面的完整tracestack）

> Session.set('game', 'anotherGame')
Exception from Deps recompute: TypeError: Cannot read property '0' of undefined

造成这些错误的原因是什么？

clientView.js

Template.scores.score = function() {
    return Score.find({game: Session.get('game')})
}

错误

    Exception from Deps recompute: TypeError: Cannot read property 'previousSibling' of null
        at findPosition (http://localhost:3000/packages/liverange.js?710fe06b230e4e9dea26fab955d6a2badb8467cc:210:12)
        at new LiveRange (http://localhost:3000/packages/liverange.js?710fe06b230e4e9dea26fab955d6a2badb8467cc:159:18)
        at Object.Spark.finalize (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:726:17)
        at http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:697:13
        at LiveRange.operate (http://localhost:3000/packages/liverange.js?710fe06b230e4e9dea26fab955d6a2badb8467cc:490:9)
        at http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:693:11
        at withEventGuard (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:162:16)
        at Object.Spark.renderToRange (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:692:3)
        at null.<anonymous> (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:925:13)
        at Object.Meteor._noYieldsAllowed (http://localhost:3000/packages/meteor.js?2b578107b8239ff9bc64200e6af2a24001461b30:530:10)

和

Exception from Deps recompute: TypeError: Cannot read property '0' of undefined
    at LiveRange._removeEntries (http://localhost:3000/packages/liverange.js?710fe06b230e4e9dea26fab955d6a2badb8467cc:384:31)
    at LiveRange.operate (http://localhost:3000/packages/liverange.js?710fe06b230e4e9dea26fab955d6a2badb8467cc:479:14)
    at http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:693:11
    at withEventGuard (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:162:16)
    at Object.Spark.renderToRange (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:692:3)
    at null.<anonymous> (http://localhost:3000/packages/spark.js?742c715b73fac26c16ad433118b87045bc5658ff:925:13)
    at Object.Meteor._noYieldsAllowed (http://localhost:3000/packages/meteor.js?2b578107b8239ff9bc64200e6af2a24001461b30:530:10)
    at null._func (http://localhost:3000/packages/deps.js?e2b721ea91f036193799d30ccdf652423602aa5c:324:14)
    at _.extend._compute (http://localhost:3000/packages/deps.js?e2b721ea91f036193799d30ccdf652423602aa5c:185:12)
    at _.extend._recompute (http://localhost:3000/packages/deps.js?e2b721ea91f036193799d30ccdf652423602aa5c:198:14)

检查了重复id，似乎没有

$('[id]').each(function (i) {
    var ids = $('[id="' + this.id + '"]');
    if (ids.length > 1) {
        console.log(this);
    }
    return;
}).slice(0,0);

MeteorJS：Deps重新计算的异常：TypeError：无法读取null的属性'previousSibling'

0 个答案: