Javascript 获取与条件匹配的对象数组中的第一个对象

我有这个对象数组

[{},{"IGG":"\n1000400078","Date effet":"16/04/2007","Statut déontologie":"A","Version charte":"1","N°Charte":"0","Nom charte":"Non exposé","Statut Charte":"A","Date envoi charte":"","Dat 1er relance":"","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":""},{"IGG":""},{"IGG":"\n1000400103","Date effet":"23/05/2016","Statut déontologie":"A","Version charte":"2","N°Charte":"1","Nom charte":"Régime Général","Statut Charte":"A","Date envoi charte":"27/09/2010","Dat 1er relance":"07/10/2010","Date 2eme relance":"18/10/2010","Date 3 eme relance":"28/10/2010","Date de validation":"20/11/2015"},{},{"IGG":"\n1000400381","Date effet":"04/09/2019","Statut déontologie":"A","Version charte":"2","N°Charte":"3","Nom charte":"Initié Société Générale","Statut Charte":"A","Date envoi charte":"16/09/2019","Dat 1er relance":"26/09/2019","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":"27/09/2019"},{},{"IGG":"\n1000401040","Date effet":"01/09/2015","Statut déontologie":"A","Version charte":"2","N°Charte":"5","Nom charte":"Régime Général & Initié Société Générale","Statut Charte":"A","Date envoi charte":"03/09/2015","Dat 1er relance":"14/09/2015","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":"18/09/2015"},{},{"IGG":"\n1007829487","Date effet":"03/12/2019","Statut déontologie":"A","Version charte":"1","N°Charte":"8","Nom charte":"Conseiller Gestion Patrimoine","Statut Charte":"A","Date envoi charte":"13/12/2019","Dat 1er relance":"23/12/2019","Date 2eme relance":"02/01/2020","Date 3 eme relance":"13/01/2020","Date de validation":"14/01/2020"},{},{"IGG":"\n"}]

我想得到一个包含IGG in URL查询参数的具有IGG值的对象

例如，如果我使用localhost:8000/igg？igg=1000400078，我需要获取具有“igg”：\n1000400078”的对象，因此此对象：

{"IGG":"\n1000400078","Date effet":"16/04/2007","Statut déontologie":"A","Version charte":"1","N°Charte":"0","Nom charte":"Non exposé","Statut Charte":"A","Date envoi charte":"","Dat 1er relance":"","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":""}

所以我试着：

json.find(item => i.includes(item.IGG);

但它又回来了

[{"IGG":""}]

---

有人能帮我一下吗

你的

包含测试是反向的，应该是
item.IGG.includes（i）

您还需要检查
item.IGG
是否存在，否则在
未定义的
上调用
.includes（）
时会出现错误


const json=[{}，{“IGG”：“\n1000400078”，“生效日期”：“2007年4月16日”，“状态表”：“A”，“版本表”：“1”，“N°表”：“0”，“名称表”：“非公开”，“状态表”：“A”，“日期环境表”：“日期关系”：“日期关系”：“日期3关系”：“日期失效”：“}，{”IGG:“日期”：“\n1000103”，“生效日期”：”2016年5月23日，“本体论”中的“A”、“版本图表”中的“2”、“N”图表中的“1”、“名称图表”中的“Régime GéNéral”、“状态图表”中的“A”、“日期环境图表”中的“27/09/2010”、“日期关系”中的“07/10/2010”、“日期关系”中的“18/10/2010”、“日期3 eme关系”中的“28/10/2010”、“日期取消验证”中的“20/11/2015”、{}、{}、{09“IGG”：“N1000381”、“生效日期”中的“2019 4/04”《本体论》：“A”，“版本表”：“2”，“N°表”：“3”，“名称表”：“初始社会关系”，“本体论”：“A”，“日期环境表”：“2019年9月16日”，“日期关系”：“2019年9月26日”，“日期关系”：“日期3 eme关系”：“日期取消确认”：“2019年9月27日”}，{“IGG”：“2015年9月1日”，“本体论”：“日期”版本图表“：”2“，”N°图表“：”5“，”名义图表“：”体制改革与初始社会改革“，”现状图表“：”A“，”日期环境图表“：”2015年9月3日“，”日期关系“：”2015年9月14日“，”日期关系“，”日期3 eme关系“，”日期取消确认“：”2015年9月18日“，”，{}，{”IGG“，”日期生效日期“：”2019年12月3日“，”现状图表“，”A“，”版本图表“：”1“，”N°图表“：”8“，”名称图表“：”顾问示意图“，”状态图表“：”A“，”日期环境图表“：”2019年12月13日“，”日期关系“：”2019年12月23日“，”日期关系“：”2020年1月2日“，”日期3 eme关系“：”2020年1月13日“，”日期取消验证“：”2020年1月14日“，”，{}，{IGG:“\N}]
设i=“1000400078”；
console.log（json.find（item=>item.IGG&&item.IGG.includes（i））；
您必须与浏览器中的url进行比较，因此使用
位置

const data = [{}, {"IGG":"\n1000400078","Date effet":"16/04/2007","Statut déontologie":"A","Version charte":"1","N°Charte":"0","Nom charte":"Non exposé","Statut Charte":"A","Date envoi charte":"","Dat 1er relance":"","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":""},{"IGG":""},{"IGG":"\n1000400103","Date effet":"23/05/2016","Statut déontologie":"A","Version charte":"2","N°Charte":"1","Nom charte":"Régime Général","Statut Charte":"A","Date envoi charte":"27/09/2010","Dat 1er relance":"07/10/2010","Date 2eme relance":"18/10/2010","Date 3 eme relance":"28/10/2010","Date de validation":"20/11/2015"},{},{"IGG":"\n1000400381","Date effet":"04/09/2019","Statut déontologie":"A","Version charte":"2","N°Charte":"3","Nom charte":"Initié Société Générale","Statut Charte":"A","Date envoi charte":"16/09/2019","Dat 1er relance":"26/09/2019","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":"27/09/2019"},{},{"IGG":"\n1000401040","Date effet":"01/09/2015","Statut déontologie":"A","Version charte":"2","N°Charte":"5","Nom charte":"Régime Général & Initié Société Générale","Statut Charte":"A","Date envoi charte":"03/09/2015","Dat 1er relance":"14/09/2015","Date 2eme relance":"","Date 3 eme relance":"","Date de validation":"18/09/2015"},{},{"IGG":"\n1007829487","Date effet":"03/12/2019","Statut déontologie":"A","Version charte":"1","N°Charte":"8","Nom charte":"Conseiller Gestion Patrimoine","Statut Charte":"A","Date envoi charte":"13/12/2019","Dat 1er relance":"23/12/2019","Date 2eme relance":"02/01/2020","Date 3 eme relance":"13/01/2020","Date de validation":"14/01/2020"},{},{"IGG":"\n"}]

const result = data.find(item => item.IGG.replace(/[^a-zA-Z ]/g, '') === location.search.split('igg=')[1]);

console.log(result);

i
的值是多少？i等于URL！中的查询（如果您在localhost:8000/igg？igg=5，那么i=5）这个答案是错误的！与url位置无关，
includes
不适合完美匹配…因为如果
a
是
b
的子字符串，则返回true:-|我假设url参数已经提取到变量
I
。需要一个子字符串，因为
item.IGG
以h新行。虽然也可以通过剥离新行，然后进行精确比较来完成。