Forbes Travel Guide Announces 2015 Star Ratings

百度 凤凰网科技讯3月25日消息近期官司缠身的Facebook又遭到了州级诉讼，最近，美国伊利诺伊州库克县已经对Facebook提起诉讼，指控其违反了该州的《消费者欺诈与欺骗性商业行为法》，称Facebook没有及时阻止CambridgeAnalytica使用错误的行为来搜集用户的数据，导致用户数据的泄露，同时造成巨大损失。

JSON is a convenient and widely used format for serializing objects, arrays, numbers, strings, booleans, and null. JSON does not support all data types allowed by JavaScript, which means that JavaScript objects that use these incompatible types cannot be directly serialized to JSON.

The JSON type representation of a JSON-incompatible object is an equivalent JavaScript object with properties encoded such that the information can be serialized to JSON. This typically has the same properties as the original object for compatible data types, while incompatible properties are converted/serialized to compatible types. For example, buffer properties in the original object might be base64url-encoded to strings in the JSON-type representation.

An object that cannot automatically be serialized to JSON using the JSON.stringify() method can define an instance method named toJSON() that returns the JSON-type representation of the original object. JSON.stringify() will then use toJSON() to get the object to stringify, instead of the original object. PublicKeyCredential.toJSON() and Performance.toJSON() are examples of this approach.

A JSON string serialized in this way can be deserialized back to the JSON-type representation object using JSON.parse(). It is common to provide a converter method, such as PublicKeyCredential.parseCreationOptionsFromJSON(), to convert the JSON-type representation back to the original object.