JSON到JavaScript，SyntaxError:意外令牌& [英] JSON to JavaScript, SyntaxError: Unexpected token &

问题描述

我知道这个问题已经问过很多遍了，但是我真的不明白.

I know this question has been asked numerous times, but I really don´t get it.

我正在MVC中创建一个网站，并且正在从我的模型中创建一个JSON字符串.然后，我想将其作为参数传递给使用该函数绘制图形的JavaScript函数.

I am creating a site in MVC, and I'm creating a JSON string from my model. I then want to pass it as argument to a JavaScript function that uses it to plot a graph.

这是我创建JSON字符串的地方.这确实创建了有效的JSON字符串，我在 JSONLint 上进行了检查.

Here is were I create the JSON string. This indeed creates a valid JSON string, I checked it at JSONLint.

@{
    var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
    var weightsAsJsonString = serializer.Serialize(Enumerable.Select(Model, weight =>
        new
        {
            date = weight.Date,
            value = weight.Value
        }));
}

进一步，我从中创建一个JavaScript变量并将其传递给JavaScript函数:

Further down I create a JavaScript variable from it and pass it into the JavaScript function:

var jsonStringToGraph = @weightsAsJsonString;    
google.setOnLoadCallback(drawVisualization(jsonstring));

运行此命令时，控制台将打印"SyntaxError:意外令牌&"我声明的是jsonStringToGraph.我四处搜寻，得出结论，我应该在@weightsAsJsonString旁加上''，所以我做到了.

When I run this, the console prints 'SyntaxError: Unexpected token &' at the line were I declare jsonStringToGraph. I googled around and concluded that I should put ' ' around @weightsAsJsonString, so I do that.

无论如何，在我的drawVisualization中，我这样做:

Anyway, in my drawVisualization, I do this:

function drawVisualization(teststring) {
    .......
    var parsedJson = JSON.parse(teststring);

这给了我SyntaxError: Unexpected token & Index:1 我知道底部的代码是导致异常的原因，但我不明白为什么.有人知道我在做什么错吗?

This gives me SyntaxError: Unexpected token & Index:1 I know that the code at the bottom is what is causing the exception, but I do not understand why. Do anyone understand what I am doing wrong?

这是weightsAsJsonString

This is the weightsAsJsonString

[{"date":"\/Date(1434492000000)\/","value":100.2},{"date":"\/Date(1434578400000)\/","value":99.2},{"date":"\/Date(1434664800000)\/","value":101.2},{"date":"\/Date(1434751200000)\/","value":98.2},{"date":"\/Date(1434837600000)\/","value":97.2},{"date":"\/Date(1434924000000)\/","value":96.2},{"date":"\/Date(1435010400000)\/","value":95.2},{"date":"\/Date(1435096800000)\/","value":94.2}]

推荐答案

听起来您的问题是试图通过Razor将内容注入JavaScript.默认情况下，@将对您的内容进行HTML编码，这在JavaScript的上下文中无效.

It sounds like your issue is trying to inject content via Razor into JavaScript. By default @ will HTML-encode your content, which doesn't work in the context of JavaScript.

@Html.Raw(weightsAsJsonString)将更好地工作，然后您的JS将具有一个JavaScript对象，因此以后不再需要JSON.parse.

@Html.Raw(weightsAsJsonString) will work better, and then your JS will have a JavaScript object, so there's no need for the JSON.parse later on.

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