「インデックス」が配列内に何回あるかを調べる

Question

「インデックス」が配列内に存在するかどうかを調べようとしています。

私がしようとしているものは何も働いていない、これは私が作った最高の試みですが、これについて私の頭を向けることはできません。

var arr = {"__metadata":{"id":"a5e55ca2-c574-434e-8ec3-1b9cd4595bcb","uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)","etag":"\"2\"","type":"SP.Data.SalesListItem"},"FirstUniqueAncestorSecurableObject":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/FirstUniqueAncestorSecurableObject"}},"RoleAssignments":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/RoleAssignments"}},"Activities":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/Activities"}},"AttachmentFiles":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/AttachmentFiles"}},"ContentType":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/ContentType"}},"GetDlpPolicyTip":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/GetDlpPolicyTip"}},"FieldValuesAsHtml":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/FieldValuesAsHtml"}},"FieldValuesAsText":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/FieldValuesAsText"}},"FieldValuesForEdit":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/FieldValuesForEdit"}},"File":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/File"}},"Folder":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/Folder"}},"ParentList":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/ParentList"}},"Properties":{"__deferred":{"uri":"https://lavanet.sharepoint.com/sites/devcla/_api/Web/Lists(guid'cc4de542-1c06-4f53-b787-b8a2d42fe21e')/Items(1)/Properties"}},"FileSystemObjectType":0,"Id":1,"ServerRedirectedEmbedUri":null,"ServerRedirectedEmbedUrl":"","ContentTypeId":"0x010048CF0CAB992F7B409B79C034586FFB7E","Title":"Test data 1","Date":"2017-01-01T08:00:00Z","Index":20,"Index2":15,"ID":1,"Modified":"2017-04-18T12:27:19Z","Created":"2017-02-03T10:02:10Z","AuthorId":17,"EditorId":17,"OData__UIVersionString":"1.0","Attachments":false,"GUID":"d87fa9d2-c81e-4dfd-b568-c8a300fc12d8"} 
 

 

 

 
function containsObject(obj, list) { 
 
    var x; 
 
    for (x in list) { 
 
     if (list.hasOwnProperty(x) && list[x] === obj) { 
 
      return true; 
 
     } 
 
    } 
 

 
    return false; 
 
} 
 

 
console.log(containsObject("index", arr));

誰かが少し

Answer 1

を助けることができる場合は、大文字の気===キーおよび/または小道具の値インデックス場合とないの両方カウントしたい場合が大好きですこのようなことを試すことができます。

function containsObject(obj, list) { 
    var cnt = 0; 
    for (var x in list) { 
    var val = list.hasOwnProperty(x) && list[x] ? list[x].toString() : ''; 

    if (x.toLowerCase() === obj.toLowerCase() || 
     val.toLowerCase() === obj.toLowerCase()) { 
     cnt++; 
    } 
    } 
    return cnt; 
}