2つの配列を比較し、javascriptを使って各値の数を調べる

私は2つの配列を持っています。2つの配列を比較し、javascriptを使って各値の数を調べる

ここは私の配列です。ここで

var arr=[ 
"08-01-2017", 
"07-31-2017", 
"07-30-2017", 
"07-29-2017", 
"07-28-2017", 
"07-27-2017", 
"07-26-2017"]

は、私が2つの試合arrays.find値を比較しても数える必要がある別の配列

var arr1= [ 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "Home", 
     "REFERER": "", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-31T05:44:06.743Z", 
     "S_ID": "80067826-0cad-4806-b40e-8e5d8be18e53", 
     "C_ID": "", 
     "C_NAME": "", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c20a636c81d38dc77c626" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "ProductlistPage", 
     "REFERER": "Home", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-30T05:44:22.425Z", 
     "S_ID": "7fe1795a-5064-43d7-9a62-48b0f156a2c3", 
     "C_ID": "1", 
     "C_NAME": "Sparklers", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c20b636c81d38dc77c627" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "ProductlistPage", 
     "REFERER": "Home", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-29T05:45:25.064Z", 
     "S_ID": "439667fe-ab24-4bf6-959e-152a4f631fe3", 
     "C_ID": "595f40038c4d19b50ac21b98", 
     "C_NAME": "Sparklers", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c20f536c81d38dc77c628" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "ProductdetailsPage", 
     "REFERER": "ProductlistPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-29T05:45:39.047Z", 
     "S_ID": "a21c273a-372e-4a81-9997-d468d5efd299", 
     "C_ID": "1", 
     "C_NAME": "Sparklers", 
     "P_ID": "595f3e418c4d19b50ac21b84", 
     "P_NAME": "Martina", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c210236c81d38dc77c629" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "Home", 
     "REFERER": "", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-28T05:47:15.604Z", 
     "S_ID": "a4278659-8053-45fd-8a95-78766fd7541b", 
     "C_ID": "", 
     "C_NAME": "", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c216336c81d38dc77c62a" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "ProductlistPage", 
     "REFERER": "Home", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-27T05:47:22.700Z", 
     "S_ID": "874bb326-ab02-4061-a029-bef5977d4c65", 
     "C_ID": "595f40038c4d19b50ac21b98", 
     "C_NAME": "Sparklers", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c216b36c81d38dc77c62b" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "CartPage", 
     "REFERER": "ProductlistPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-27T05:47:25.758Z", 
     "S_ID": "dd9096f9-79ea-4d86-81ce-149e364ab1ed", 
     "C_ID": "1", 
     "C_NAME": "Sparklers", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c216d36c81d38dc77c62c" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "ProductdetailsPage", 
     "REFERER": "ProductlistPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-29T05:47:42.047Z", 
     "S_ID": "4ed84c84-80ec-4494-9ffe-453f19e2c079", 
     "C_ID": "1", 
     "P_ID": "595f3e418c4d19b50ac21b84", 
     "P_NAME": "Martina", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c217d36c81d38dc77c62d" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "", 
     "PATH": "CartPage", 
     "REFERER": "ProductdetailsPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-29T05:47:45.174Z", 
     "S_ID": "91153a97-d79e-4d86-9872-5df51bd7e82f", 
     "C_ID": "1", 
     "P_ID": "595f3e418c4d19b50ac21b84", 
     "P_NAME": "Martina", 
     "CART_ID": "", 
     "O_ID": "", 
     "id": "597c218136c81d38dc77c62e" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "59687ee6cd62a604e2bb0d1f", 
     "PATH": "CustomershippingPage", 
     "REFERER": "cartPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-07-29T05:48:20.386Z", 
     "S_ID": "46866f41-9f43-4d28-a602-490db68dc029", 
     "C_ID": "", 
     "C_NAME": "", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "597c21a336c81d38dc77c62f", 
     "O_ID": "", 
     "id": "597c21a436c81d38dc77c630" 
     }, 
     { 
     "HOST": "", 
     "U_ID": "59687ee6cd62a604e2bb0d1f", 
     "PATH": "customerpayment", 
     "REFERER": "CustomershippingPage", 
     "AGENT": "", 
     "OS": "", 
     "DATE_TIME": "2017-01-08T05:48:46.356Z", 
     "S_ID": "56ad3bd7-854b-42e9-8443-46c514eb2ece", 
     "C_ID": "", 
     "C_NAME": "", 
     "P_ID": "", 
     "P_NAME": "", 
     "CART_ID": "597c21a336c81d38dc77c62f", 
     "O_ID": "", 
     "id": "597c21be36c81d38dc77c631" 
     } 
    ]

です。

例arrは一度繰り返される別の配列arr1をDATE_TIME

08-01-2017

に基づいdate.Compareのリストです。 07-29-2017を5回繰り返す。

私は

08-01-2017 - 2 <- Count(How many times repeated) 
07-29-2017 - 5 
07-28-2017 - 3 etc..

この出力を必要とする各（ARR）の値は、繰り返し回数です。

わかりません。

親切にあなたが最初にarrを反復して、あなたのarr1を反復処理することができます値0を持つキーとして結果にそのすべての日付を入れて、キーとしてそれぞれの日付を使用することができます

おかげ

出典

2017-08-01 vaishu ani

あなたはどのような出力を期待できますか？この？ [{d：08-01-2017、c：2}、[{d：01-01-2010、c：0}、...] – Vitalii

配列内の日付形式が同じではありません。 8-1-2017は、すべてを解析するとarr1には発生しません – baao

は、あなたのISO日から日付を抽出することができ、その後、ユーザーの配列番号は、出現回数をカウントするために削減し、配列＃フィルタ。

const arr=["08-01-2017","07-31-2017","07-30-2017","07-29-2017","07-28-2017","07-27-2017","07-26-2017"]; 
 
const arr1= [ 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "Home", 
 
     "REFERER": "", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-31T05:44:06.743Z", 
 
     "S_ID": "80067826-0cad-4806-b40e-8e5d8be18e53", 
 
     "C_ID": "", 
 
     "C_NAME": "", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c20a636c81d38dc77c626" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "ProductlistPage", 
 
     "REFERER": "Home", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-30T05:44:22.425Z", 
 
     "S_ID": "7fe1795a-5064-43d7-9a62-48b0f156a2c3", 
 
     "C_ID": "1", 
 
     "C_NAME": "Sparklers", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c20b636c81d38dc77c627" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "ProductlistPage", 
 
     "REFERER": "Home", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-29T05:45:25.064Z", 
 
     "S_ID": "439667fe-ab24-4bf6-959e-152a4f631fe3", 
 
     "C_ID": "595f40038c4d19b50ac21b98", 
 
     "C_NAME": "Sparklers", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c20f536c81d38dc77c628" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "ProductdetailsPage", 
 
     "REFERER": "ProductlistPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-29T05:45:39.047Z", 
 
     "S_ID": "a21c273a-372e-4a81-9997-d468d5efd299", 
 
     "C_ID": "1", 
 
     "C_NAME": "Sparklers", 
 
     "P_ID": "595f3e418c4d19b50ac21b84", 
 
     "P_NAME": "Martina", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c210236c81d38dc77c629" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "Home", 
 
     "REFERER": "", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-28T05:47:15.604Z", 
 
     "S_ID": "a4278659-8053-45fd-8a95-78766fd7541b", 
 
     "C_ID": "", 
 
     "C_NAME": "", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c216336c81d38dc77c62a" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "ProductlistPage", 
 
     "REFERER": "Home", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-27T05:47:22.700Z", 
 
     "S_ID": "874bb326-ab02-4061-a029-bef5977d4c65", 
 
     "C_ID": "595f40038c4d19b50ac21b98", 
 
     "C_NAME": "Sparklers", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c216b36c81d38dc77c62b" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "CartPage", 
 
     "REFERER": "ProductlistPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-27T05:47:25.758Z", 
 
     "S_ID": "dd9096f9-79ea-4d86-81ce-149e364ab1ed", 
 
     "C_ID": "1", 
 
     "C_NAME": "Sparklers", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c216d36c81d38dc77c62c" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "ProductdetailsPage", 
 
     "REFERER": "ProductlistPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-29T05:47:42.047Z", 
 
     "S_ID": "4ed84c84-80ec-4494-9ffe-453f19e2c079", 
 
     "C_ID": "1", 
 
     "P_ID": "595f3e418c4d19b50ac21b84", 
 
     "P_NAME": "Martina", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c217d36c81d38dc77c62d" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "", 
 
     "PATH": "CartPage", 
 
     "REFERER": "ProductdetailsPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-29T05:47:45.174Z", 
 
     "S_ID": "91153a97-d79e-4d86-9872-5df51bd7e82f", 
 
     "C_ID": "1", 
 
     "P_ID": "595f3e418c4d19b50ac21b84", 
 
     "P_NAME": "Martina", 
 
     "CART_ID": "", 
 
     "O_ID": "", 
 
     "id": "597c218136c81d38dc77c62e" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "59687ee6cd62a604e2bb0d1f", 
 
     "PATH": "CustomershippingPage", 
 
     "REFERER": "cartPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-07-29T05:48:20.386Z", 
 
     "S_ID": "46866f41-9f43-4d28-a602-490db68dc029", 
 
     "C_ID": "", 
 
     "C_NAME": "", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "597c21a336c81d38dc77c62f", 
 
     "O_ID": "", 
 
     "id": "597c21a436c81d38dc77c630" 
 
     }, 
 
     { 
 
     "HOST": "", 
 
     "U_ID": "59687ee6cd62a604e2bb0d1f", 
 
     "PATH": "customerpayment", 
 
     "REFERER": "CustomershippingPage", 
 
     "AGENT": "", 
 
     "OS": "", 
 
     "DATE_TIME": "2017-01-08T05:48:46.356Z", 
 
     "S_ID": "56ad3bd7-854b-42e9-8443-46c514eb2ece", 
 
     "C_ID": "", 
 
     "C_NAME": "", 
 
     "P_ID": "", 
 
     "P_NAME": "", 
 
     "CART_ID": "597c21a336c81d38dc77c62f", 
 
     "O_ID": "", 
 
     "id": "597c21be36c81d38dc77c631" 
 
     } 
 
    ] 
 

 
var result = arr.reduce((result, date) => { 
 
    var occurances = arr1.filter((obj) => { 
 
    let d = new Date(obj['DATE_TIME']); 
 
    var day = d.getDate(); 
 
    var month = d.getMonth() + 1; 
 
    var year = d.getFullYear(); 
 

 
    if(day < 10){ 
 
     day='0'+day; 
 
    } 
 
    if(month<10){ 
 
     month='0'+month; 
 
    } 
 
    var newDate = month+'-'+day+'-'+year; 
 
    
 
    return date === newDate; 
 
    }).length; 
 
    result[date] = occurances; 
 
    return result; 
 
},{}); 
 

 
console.log(result);

出典

2017-08-01 08:18:12

ご返信ありがとうございます。作品：） –

少し複雑すぎますね。 –

@ NinaScholzあなたは最もエレガントなコードを書いています。はい、それは複雑です。 –

、私にアドバイス結果オブジェクトの場合は、各日付の増分カウントを保持します。このような何か：

var arr=[ 
 
"08-01-2017", 
 
"07-31-2017", 
 
"07-30-2017", 
 
"07-29-2017", 
 
"07-28-2017", 
 
"07-27-2017", 
 
"07-26-2017"]; 
 

 
var arr1= [ 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "Home", 
 
    "REFERER": "", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-31T05:44:06.743Z", 
 
    "S_ID": "80067826-0cad-4806-b40e-8e5d8be18e53", 
 
    "C_ID": "", 
 
    "C_NAME": "", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c20a636c81d38dc77c626" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "ProductlistPage", 
 
    "REFERER": "Home", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-30T05:44:22.425Z", 
 
    "S_ID": "7fe1795a-5064-43d7-9a62-48b0f156a2c3", 
 
    "C_ID": "1", 
 
    "C_NAME": "Sparklers", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c20b636c81d38dc77c627" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "ProductlistPage", 
 
    "REFERER": "Home", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-29T05:45:25.064Z", 
 
    "S_ID": "439667fe-ab24-4bf6-959e-152a4f631fe3", 
 
    "C_ID": "595f40038c4d19b50ac21b98", 
 
    "C_NAME": "Sparklers", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c20f536c81d38dc77c628" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "ProductdetailsPage", 
 
    "REFERER": "ProductlistPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-29T05:45:39.047Z", 
 
    "S_ID": "a21c273a-372e-4a81-9997-d468d5efd299", 
 
    "C_ID": "1", 
 
    "C_NAME": "Sparklers", 
 
    "P_ID": "595f3e418c4d19b50ac21b84", 
 
    "P_NAME": "Martina", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c210236c81d38dc77c629" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "Home", 
 
    "REFERER": "", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-28T05:47:15.604Z", 
 
    "S_ID": "a4278659-8053-45fd-8a95-78766fd7541b", 
 
    "C_ID": "", 
 
    "C_NAME": "", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c216336c81d38dc77c62a" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "ProductlistPage", 
 
    "REFERER": "Home", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-27T05:47:22.700Z", 
 
    "S_ID": "874bb326-ab02-4061-a029-bef5977d4c65", 
 
    "C_ID": "595f40038c4d19b50ac21b98", 
 
    "C_NAME": "Sparklers", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c216b36c81d38dc77c62b" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "CartPage", 
 
    "REFERER": "ProductlistPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-27T05:47:25.758Z", 
 
    "S_ID": "dd9096f9-79ea-4d86-81ce-149e364ab1ed", 
 
    "C_ID": "1", 
 
    "C_NAME": "Sparklers", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c216d36c81d38dc77c62c" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "ProductdetailsPage", 
 
    "REFERER": "ProductlistPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-29T05:47:42.047Z", 
 
    "S_ID": "4ed84c84-80ec-4494-9ffe-453f19e2c079", 
 
    "C_ID": "1", 
 
    "P_ID": "595f3e418c4d19b50ac21b84", 
 
    "P_NAME": "Martina", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c217d36c81d38dc77c62d" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "", 
 
    "PATH": "CartPage", 
 
    "REFERER": "ProductdetailsPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-29T05:47:45.174Z", 
 
    "S_ID": "91153a97-d79e-4d86-9872-5df51bd7e82f", 
 
    "C_ID": "1", 
 
    "P_ID": "595f3e418c4d19b50ac21b84", 
 
    "P_NAME": "Martina", 
 
    "CART_ID": "", 
 
    "O_ID": "", 
 
    "id": "597c218136c81d38dc77c62e" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "59687ee6cd62a604e2bb0d1f", 
 
    "PATH": "CustomershippingPage", 
 
    "REFERER": "cartPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-07-29T05:48:20.386Z", 
 
    "S_ID": "46866f41-9f43-4d28-a602-490db68dc029", 
 
    "C_ID": "", 
 
    "C_NAME": "", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "597c21a336c81d38dc77c62f", 
 
    "O_ID": "", 
 
    "id": "597c21a436c81d38dc77c630" 
 
    }, 
 
    { 
 
    "HOST": "", 
 
    "U_ID": "59687ee6cd62a604e2bb0d1f", 
 
    "PATH": "customerpayment", 
 
    "REFERER": "CustomershippingPage", 
 
    "AGENT": "", 
 
    "OS": "", 
 
    "DATE_TIME": "2017-01-08T05:48:46.356Z", 
 
    "S_ID": "56ad3bd7-854b-42e9-8443-46c514eb2ece", 
 
    "C_ID": "", 
 
    "C_NAME": "", 
 
    "P_ID": "", 
 
    "P_NAME": "", 
 
    "CART_ID": "597c21a336c81d38dc77c62f", 
 
    "O_ID": "", 
 
    "id": "597c21be36c81d38dc77c631" 
 
    } 
 
]; 
 

 
var result = {}; 
 

 

 
arr.forEach(function(date){ 
 
    result[date] = 0; 
 
}) 
 

 

 
arr1.forEach(function(ob){ 
 
    var date = new Date(ob['DATE_TIME']); 
 
    var m = date.getMonth() + 1; 
 
    m = m > 9 ? m : '0' + m; 
 
    var d = date.getDate() + 1; 
 
    d = d > 9 ? d : '0' + d; 
 
    date = m + '-' + d + '-' + date.getFullYear(); 
 
    result[date] = date in result ? parseInt(result[date]) + 1 : 1; 
 
}) 
 

 

 
console.log(result);

出典

2017-08-01 08:00:36 Dij

arr1とarrを正確に比較していますか？私はあなたが彼の質問を理解していないと思う。 – Dino

@masterfanそれはアイデアになる可能性が高い、今すぐチェックする、私は更新コードがある。 – Dij

日付の部分が文字の固定数を持っていると仮定しても安全と思われます。したがって：DATE_TIMEのタイムスタンプが似ているよう

arr1.reduce((acc, item) => { 
    const key = item.DATE_TIME.substr(0,10); 
    if (arr.hasOwnProperty(key)) { acc[key] = (acc[key] || 0) + 1 } 
    return acc; 
}, {})

出典

2017-08-01 08:25:55

あなたは、ISO 6801文字列にあなたの日付を正規化することができます。次に、日付をキーとしてオブジェクトに1つだけ追加します。

var data = [{ DATE_TIME: "2017-07-31T05:44:06.743Z" }, { DATE_TIME: "2017-07-30T05:44:22.425Z" }, { DATE_TIME: "2017-07-29T05:45:25.064Z" }, { DATE_TIME: "2017-07-29T05:45:39.047Z" }, { DATE_TIME: "2017-07-28T05:47:15.604Z" }, { DATE_TIME: "2017-07-27T05:47:22.700Z" }, { DATE_TIME: "2017-07-27T05:47:25.758Z" }, { DATE_TIME: "2017-07-29T05:47:42.047Z" }, { DATE_TIME: "2017-07-29T05:47:45.174Z" }, { DATE_TIME: "2017-07-29T05:48:20.386Z" }, { DATE_TIME: "2017-01-08T05:48:46.356Z" }], 
 
    dates = ["08-01-2017", "07-31-2017", "07-30-2017", "07-29-2017", "07-28-2017", "07-27-2017", "07-26-2017"], 
 
    count = Object.create(null); 
 

 
dates.forEach(function (d) { 
 
    count[d.replace(/(..)-(..)-(....)/, '$3-$1-$2')] = 0; 
 
}); 
 
data.forEach(function (o) { 
 
    var key = o.DATE_TIME.slice(0, 10); 
 
    (key in count) && count[key]++; 
 
}); 
 
    
 
console.log(count);

.as-console-wrapper { max-height: 100% !important; top: 0; }

出典

2017-08-01 08:32:18

2つの配列を比較し、javascriptを使って各値の数を調べる

答えて

関連する問題