我有一个很长的JSON数组，我希望从中删除一个特定的键及其值，然后将其重新构造为JSON数组。
如何从以下JSON数组中删除question_title，然后以相同的方式重新创建它？
[
{
"question_title":"1110112x100012 (equal to)",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1140",
"questions":[
{
"op_key":1,
"op_val":"111101101"
},
{
"op_key":2,
"op_val":"111101100"
},
{
"op_key":3,
"op_val":"1111101011"
},
{
"op_key":4,
"op_val":"1100110"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Information related to functioning of organization such as project plans is ________ information",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1142",
"questions":[
{
"op_key":1,
"op_val":"Internal use only"
},
{
"op_key":2,
"op_val":"Confidential"
},
{
"op_key":3,
"op_val":"Proprietary"
},
{
"op_key":4,
"op_val":"Business"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Conceptual schema is a definition of the total database.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1147",
"questions":[
{
"op_key":1,
"op_val":"TRUE"
},
{
"op_key":2,
"op_val":"FALSE"
},
{
"op_key":3,
"op_val":""
},
{
"op_key":4,
"op_val":""
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"The schema for the external and internal levels is kept by the database in its System Tables.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1132",
"questions":[
{
"op_key":1,
"op_val":"TRUE"
},
{
"op_key":2,
"op_val":"FALSE"
},
{
"op_key":3,
"op_val":""
},
{
"op_key":4,
"op_val":""
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"What is the role of software in DBMS?",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1149",
"questions":[
{
"op_key":1,
"op_val":"Storing and managing the data"
},
{
"op_key":2,
"op_val":"Managing user"
},
{
"op_key":3,
"op_val":"Physically storing data"
},
{
"op_key":4,
"op_val":"All of the above"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"__________ databases are generally splitted by using a common delimiter.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1144",
"questions":[
{
"op_key":1,
"op_val":"Advanced"
},
{
"op_key":2,
"op_val":"Relational"
},
{
"op_key":3,
"op_val":"Structured"
},
{
"op_key":4,
"op_val":"Flat file"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Tally is a type of ERP.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1137",
"questions":[
{
"op_key":1,
"op_val":"TRUE"
},
{
"op_key":2,
"op_val":"FALSE"
},
{
"op_key":3,
"op_val":""
},
{
"op_key":4,
"op_val":""
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Data by itself is not useful unless",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1141",
"questions":[
{
"op_key":1,
"op_val":"It is massive"
},
{
"op_key":2,
"op_val":"It is processed to obtain information"
},
{
"op_key":3,
"op_val":"It is collected from diverse sources"
},
{
"op_key":4,
"op_val":"It is properly stated "
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Pay slip and Bio-data are example of what kind of information?",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1145",
"questions":[
{
"op_key":1,
"op_val":"Business"
},
{
"op_key":2,
"op_val":"Personal"
},
{
"op_key":3,
"op_val":"General"
},
{
"op_key":4,
"op_val":"AtalpahdHelloB"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"The most commonly used system for representing signal binary numbers is the ________",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1150",
"questions":[
{
"op_key":1,
"op_val":"1?s complement system"
},
{
"op_key":2,
"op_val":"2?s complement system"
},
{
"op_key":3,
"op_val":"Complement system"
},
{
"op_key":4,
"op_val":"Sign magnitude "
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"CGI is ______",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1139",
"questions":[
{
"op_key":1,
"op_val":"Computer generated imaging"
},
{
"op_key":2,
"op_val":"Computer generated interface"
},
{
"op_key":3,
"op_val":"Computer graphical information"
},
{
"op_key":4,
"op_val":"Computer generated information"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Database is a _________ of data structured in such a way that it may serve various applications.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1135",
"questions":[
{
"op_key":1,
"op_val":"System"
},
{
"op_key":2,
"op_val":"Folder"
},
{
"op_key":3,
"op_val":"Method"
},
{
"op_key":4,
"op_val":"File"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"A management information system is one which",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1134",
"questions":[
{
"op_key":1,
"op_val":"Is required by all managers of an organization"
},
{
"op_key":2,
"op_val":"Processes data to yield information of value in tactical management"
},
{
"op_key":3,
"op_val":"Provides operational information"
},
{
"op_key":4,
"op_val":"Allows better management of organizations"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"______ Technology, enabled internet access on mobile phones.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1138",
"questions":[
{
"op_key":1,
"op_val":"SAP"
},
{
"op_key":2,
"op_val":"WAP"
},
{
"op_key":3,
"op_val":"GSM"
},
{
"op_key":4,
"op_val":"PCS"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"There can be n number of primary keys in a table.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1131",
"questions":[
{
"op_key":1,
"op_val":"TRUE"
},
{
"op_key":2,
"op_val":"FALSE"
},
{
"op_key":3,
"op_val":""
},
{
"op_key":4,
"op_val":""
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Database management systems are intended to?_____?",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1133",
"questions":[
{
"op_key":1,
"op_val":"Eliminate data redundancy"
},
{
"op_key":2,
"op_val":"Establish relationship among records in different files"
},
{
"op_key":3,
"op_val":"Manage file access"
},
{
"op_key":4,
"op_val":"All of the above"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"_________ software that automatically converts images into text.",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1148",
"questions":[
{
"op_key":1,
"op_val":"CGI"
},
{
"op_key":2,
"op_val":"Bluescreen"
},
{
"op_key":3,
"op_val":"OCR"
},
{
"op_key":4,
"op_val":"MICR "
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Binary multiplication 1x0 (equals to)",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1143",
"questions":[
{
"op_key":1,
"op_val":"1"
},
{
"op_key":2,
"op_val":"0"
},
{
"op_key":3,
"op_val":"10"
},
{
"op_key":4,
"op_val":"11"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"Office automation systems that are capable of sharing information simultaneously, between more than one user, are termed as _______",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1136",
"questions":[
{
"op_key":1,
"op_val":"Cluster systems"
},
{
"op_key":2,
"op_val":"Meeting systems"
},
{
"op_key":3,
"op_val":"Multiple-user systems"
},
{
"op_key":4,
"op_val":"Groupware systems"
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
},
{
"question_title":"What is redundant data?",
"new_attempt_id":"ATT-1187",
"unique_question_code":"QUES-1146",
"questions":[
{
"op_key":1,
"op_val":"Private Data"
},
{
"op_key":2,
"op_val":"Duplicate Data"
},
{
"op_key":3,
"op_val":"Extra Data"
},
{
"op_key":4,
"op_val":"Meaningless Data "
}
],
"selected_answer":"",
"selected_after_shuffle":"",
"marked_for_review":"",
"attempted":""
}
]
我该如何解决？
答案 0 :(得分：4)
假设您在名为json_content的字符串中有JSON：
var question_list = JSON.parse(json_content);
for(var i=0; i < question_list.length; ++i) {
var question = question_list[i];
delete question["question_title"];
}
var new_json_content = JSON.stringify(question_list);
一旦将数据解析为具有JSON.parse的对象，您就可以delete数组中每个对象的属性。然后，使用JSON.stringify生成新的JSON。
现代浏览器支持JSON对象;旧浏览器需要polyfill。