Question

我在Facebook上找到了这段代码。我想以这种方式使用结构。我该如何使用这种方法？

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Answer 1

目前尚不清楚究竟是在问什么。你不能“运行”这段代码，它是一个JSON字符串。如果要访问数据，则需要以某种方式解析它，例如jquery中的parseJSON。

我怀疑你可能会被领先的for (;;);字符串绊倒。这是一种保护设备，可以防止人们只使用eval()来处理数据。使用eval()是将JSON直接解析为javascript变量的一种旧的快捷方式，但这是一种不安全的做法。为了防止它，Facebook将for循环代码添加到字符串的前面，这样如果你试图评估它，你就会得到一个无限循环和一个挂起的浏览器。您当然可以从字符串中删除该部分，然后使用eval，但最好还是正确解析它。

使用Facebook的JavaScript方法

1 个答案: