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我是一个完整的 javascript 初学者，所以真的需要帮助！我提出了一组名为advisorRating 的问题（如下所示），我希望序言以随机顺序在单独的页面上说“评价顾问A”和“评价顾问B”。

即在一个页面上给顾问 A 打分 -> 提交 -> 下一页要求给顾问 B 打分，反之亦然。

我还希望演示顺序平均分配（即 50% 时间 A 然后 B，反之亦然）

为此，我尝试了下面的代码，但它不起作用。有一段时间它只显示了顾问 B 两次，而现在它只显示了顾问 A 两次。

  type: jsPsychSurveyLikert,
  questions: [
    {prompt: "How knowledgeable is this advisor?", 
    name: 'Knowledgeable', 
    labels: advisorLikertScale,
},

if (Math.random() < 0.5)
{
    advisorRating.preamble = "Please rate Advisor A on the following questions";
    timeline.push(advisorRating);
    advisorRating.preamble = "Please rate Advisor B on the following questions";
    timeline.push(advisorRating);
}
else
{
    advisorRating.preamble = "Please rate Advisor B on the following questions";
    timeline.push(advisorRating);
    advisorRating.preamble = "Please rate Advisor A on the following questions";
    timeline.push(advisorRating);
}

我尝试了不同的东西：

以不同方式定义顾问序言：advisorRating["preamble"]

首先定义advisorA 和advisorB 然后推送：

var advisorB = advisorRating
advisorA.preamble = "Please rate Advisor A on the following questions";
advisorB.preamble = "Please rate Advisor B on the following questions";
if (Math.random() < 0.5)
{
    timeline.push(advisorRatingA, advisorRatingB);
}
else
{
    timeline.push(advisorRatingB, advisorRatingA);
}

我想知道为什么这不起作用。然而，更重要的是，我想知道如何才能实现我最初的目标：在不同的页面上随机呈现指令。

谢谢你的帮助:)x

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