javascript - JSON.parse 不适用于将 JSON 字符串转换为 JSON 对象

Question

需要帮助将以下 JSON 字符串转换为 JSON 对象。即使字符串 JSON 也是有效的 json(由 https://jsonlint.com/ 验证)。

JSON:

{
    "condition": "AND",
    "rules": [{
            "id": "amount",
            "operator": "greater_or_equal",
            "value": "900"
        },
        {
            "condition": "AND",
            "rules": [{
                    "id": "vendorname",
                    "operator": "equal",
                    "value": "US BANK NATIONAL ASSOCIATION"
                },

                {
                    "id": "vendorname",
                    "operator": "equal",
                    "value": "HANSEN SOLUTIONS  LLC"
                }
            ]
        }
    ]

}

Answer 1

您的 JSON 字符串是多行的。多行字符串应使用模板文字存储，否则使用字符串连接来表示您的字符串。

下面的例子使用了模板字面量。用于表示多行字符串。

var str = `{
	"condition": "AND",
	"rules": [{
			"id": "amount",
			"operator": "greater_or_equal",
			"value": "900"
		},
		{
			"condition": "AND",
			"rules": [{
					"id": "vendorname",
					"operator": "equal",
					"value": "US BANK NATIONAL ASSOCIATION"
				},

				{
					"id": "vendorname",
					"operator": "equal",
					"value": "HANSEN SOLUTIONS  LLC"
				}
			]
		}
	]
}`;

console.log(JSON.parse(str));

这是一个单行字符串。

var str = '{"condition":"AND","rules":[{"id":"amount","operator":"greater_or_equal","value":"900"},{"condition":"AND","rules":[{"id":"vendorname","operator":"equal","value":"US BANK NATIONAL ASSOCIATION"},{"id":"vendorname","operator":"equal","value":"HANSEN SOLUTIONS  LLC"}]}]}';

console.log(JSON.parse(str));