Web Front-endJS TutorialAn error occurs when using JSON.parse to convert a json string into a json object_javascript tipsAn error occurs when using JSON.parse to convert a json string into a json object_javascript tips
在对数据库取出来的数据（特别是描述信息）里面含有特殊字符的话，使用JSON.parse将json字符串转换成json对象的时候会出错，主要是双引号，回车换行等影响明显，左尖括号和右尖括号也会导致显示问题，所以要在输出到页面进行json对象转换之前将一些特殊符合进行编码或转义，下面展示的是C#代码编码和转义几个常用特殊字符。经过笔者测试，将这些符号编码和转义之后，大部分json字符串都可以转换成json对象了。如果遇到个别问题，应朝着这个方向去查找问题。
theString = theString.Replace(">", ">");
theString = theString.Replace("<", "<");
theString = theString.Replace(" ", " ");
theString = theString.Replace("\"", """);
theString = theString.Replace("\'", "'");
theString = theString.Replace("\\", "\\\\");//对斜线的转义
theString = theString.Replace("\n", "\\n");
theString = theString.Replace("\r", \\r);
注意： 是回到行首，\n是新启一行，这两个一般同时出现，应该同时处理。
补充：文字中间的换行，空格在数据库里面不以 \n, ;等形式显示出来（“本书”与“前80”之间换行，“由”与“曹雪芹”之间空格）
文字：
数据库：
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