解析javascript中带有转义双引号属性的JSON对象

Parsing a JSON object with escaped double quote attributes in javascript

本文关键字：属性 JSON 对象 javascript 转义 解析      更新时间：2023-09-26

在阅读了一些关于在javascript中解析对象的问题后，我仍然有解析以下查询响应的问题:

{"messagesProfile": "[{'"message'": '"This is a test message'", '"sender'": '"test@test.com'", '"receiver
'": '"test@test.com'"}, {'"message'": '"This is a second test message'", '"sender'": '"test@test.com
'", '"receiver'": '"test@test.com'"}, {'"message'": '"This is a third test message'", '"sender'": '"test
@test.com'", '"receiver'": '"test@test.com'"}]", "successProfileMessages": true}
解析上述响应的代码是: 
if(data.successProfileMessages === false) {
            alert("Failed to retrieve messages");
        } else {
            if(typeof data.messagesProfile != "undefined" && data.messagesProfile != null && data.messagesProfile.length > 0) {
                messages = messages + "<tr>";
                messages = messages + "<td>";
                messages = messages + "There are no messages yet!";
                messages = messages + "</td>";
                messages = messages + "<td>";
            } else {
                // Successfully retrieved messages
                for(var i in  data) {
                    messages = messages + "<tr>";
                    messages = messages + "<td>";
                    messages = messages + data.messagesProfile.sender[i];
                    messages = messages + "</td>";
                    messages = messages + "<td>";
                    messages = messages + data.messagesProfile.message[i];
                    messages = messages + "</td>";
                    messages = messages + "</tr>";
                }
            }
        }

如何可以不转义转义双引号和迭代JSON对象的数组字段?

"[{'"message'": '"This is a test message'", '"sender'": '"test@test.com'", '"receiver
'": '"test@test.com'"}, {'"message'": '"This is a second test message'", '"sender'": '"test@test.com
'", '"receiver'": '"test@test.com'"}, {'"message'": '"This is a third test message'", '"sender'": '"test
@test.com'", '"receiver'": '"test@test.com'"}]"

data的messageProfile属性是一个字符串，所以您需要解析它

您可以在else子句

中执行此操作
var arrayResult = JSON.parse(data.messagesProfile);
for (var i = 0, len = arrayResult.length; i < len; i++) {
  var item = arrayResult[i];
  // do your stuff
}

对于迭代数组，我不鼓励使用for (var i in arrayResult)，因为它不会给你想要的结果。它将遍历对象的所有属性(包括长度属性!!!!!)

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