Question

我有以下JSON字符串

    {"rules": {
  "firstName": {
    "required": true,
    "range": "[2,50]"
  },
  "lastName": {
    "required": true,
    "range": "[2,50]"
  },
  "email": {
    "required": true,
    "email": true
  },
  "email2": {
    "equalTo": "email",
    "required": true
  },
  "password": {
    "required": true,
    "range": "[5,25]"
  },
  "password2": {
    "equalTo": "password",
    "required": true
  },
  "termsConfidentiality": {
    "required": true
  }
},
"messages": {

    "termsConfidentiality": {
        "required": "You must accept the Terms of Use and Privacy Policy in order to register."
    },
    "termsConfidentiality": {
        "required": "You must accept the Terms of Use and Privacy Policy in order to register."
    }
},
"errorPlacement": function(error, element) {
    if (element.attr('name') == 'termsConfidentiality') {
                        error.appendTo($('#terms'));
    }
}
}

我保留在一个名为rules的变量中。当我JSON.parse(rules)时，我收到以下错误

39 Uncaught SyntaxError: Unexpected token u in JSON

在我添加errorPlacement之前，一切正常。意外的令牌是单词'u'中的字母'function'。格式化它的正确方法是什么，以便我可以在之后解析它？

Answer 1

正如@epascarello所说，“一个函数在JSON中无效”。不要混淆JSON和Javascript，即使它们共享一个名字，它们也是相互独立的。您不能在JSON中使用函数，因为它不是一种语言，而是一种数据格式。您可以将函数封装为字符串，然后使用eval函数运行它，虽然我不建议这样做，这是一个非常脏的黑客，并且非常不安全。

Answer 2

如前所述，不要混淆json和javascript。同样在邮件中，您有重复的密钥：

"messages": {

    "termsConfidentiality": {
        "required": "You must accept the Terms of Use and Privacy Policy in order to register."
    },
    "termsConfidentiality": {
        "required": "You must accept the Terms of Use and Privacy Policy in order to register."
    }
}

有效的JSON ::

  {
        "rules": {
            "firstName": {
                "required": true,
                "range": "[2,50]"
            },
            "lastName": {
                "required": true,
                "range": "[2,50]"
            },
            "email": {
                "required": true,
                "email": true
            },
            "email2": {
                "equalTo": "email",
                "required": true
            },
            "password": {
                "required": true,
                "range": "[5,25]"
            },
            "password2": {
                "equalTo": "password",
                "required": true
            },
            "termsConfidentiality": {
                "required": true
            }
        },
        "messages": {
            "termsConfidentiality": {
                "required": "You must accept the Terms of Use and Privacy Policy in order to register."
            }
        }
    }

JSON意外令牌

2 个答案: