Js changes data structure

the background gave me a data structure as the header. I don"t feel very good to use it. I want to change the format. 

  var dateInfo = {
  week1_end: "2018-09-09",
  week1_start: "2018-09-03",
  week2_end: "2018-09-16",
  week2_start: "2018-09-10",
  week3_end: "2018-09-23",
  week3_start: "2018-09-17",
  week4_end: "2018-09-30",
  week4_start: "2018-09-24",
  week5_end: "2018-10-07",
  week5_start: "2018-10-01"
};

these are not good to render directly to the page. I think the structure is probably modified to be easy to deal with 

dateInfo = [
   {week1_start:"2018-09-03",week1_end:"week1_end"},
   {week2_start:"2018-09-03",week2_end:"week1_end"} ]

the idea at first is to get the same slider in front of it and make an object and then put it in the array. But every time I print, it"s not what I thought. 

var new_arr = []
for(item in dateInfo){
   // console.log(item)
  var str1 = item.match(/(\S*)_/)[1];

  if (item.includes(str1)) {
    var obj = {
      item : dateInfo[item]
    }
  }
  new_arr.push(obj)
}

Why is this happening? Am I thinking wrong?

Html5 node.js java javascript
Jun.02,2021
There is something wrong with the

code. I wrote a

. 
const temp = {};
for (item in dateInfo) {
    const val = dateInfo[item]
    const str1 = item.match(/(\S*)_/)[1];
    if (!temp[str1]) {
        temp[str1] = {};
        temp[str1][item] = val;
    } else {
        temp[str1][item] = val
    }
}

const new_arr = Object.values(temp);

console.log(new_arr);

can split unnecessary regular expressions, do not abuse. 

var new_arr = [];
for (item in dateInfo) {
    var index = item.match(/(\d+)/)[1];
    var key = item.match(/_(\S*)/)[1];
    new_arr[index] = new_arr[index] ? new_arr[index] : {};
    new_arr[index][key] = dateInfo[item];
}
console.log(new_arr);
 const dateInfo = {
      week1_end: '2018-09-09',
      week1_start: '2018-09-03',
      week2_end: '2018-09-16',
      week2_start: '2018-09-10',
      week3_end: '2018-09-23',
      week3_start: '2018-09-17',
      week4_end: '2018-09-30',
      week4_start: '2018-09-24',
      week5_end: '2018-10-07',
      week5_start: '2018-10-01'
    };

    
    // 
    const cKeys = new Set();
    Object.keys(dateInfo).forEach(value => {
      const cKey = value.match(/(\S*)_/)[1];
      cKeys.add(cKey);
    });


    const newArray = [];
    for (const cKey of Array.from(cKeys)) {
      const obj = {};
      for (const key in dateInfo) {
        if (!dateInfo.hasOwnProperty(key)) {
          continue;
        }
        if (key.startsWith(cKey)) {
          obj[key] = dateInfo[key];
        }
      }
      newArray.push(obj);
    }

Thank you for your help. I hope I can have the opportunity to help others in the future. 

let dateInfo = {
  week1_end: "2018-09-09",
  week1_start: "2018-09-03",
  week2_end: "2018-09-16",
  week2_start: "2018-09-10",
  week3_end: "2018-09-23",
  week3_start: "2018-09-17",
  week4_end: "2018-09-30",
  week4_start: "2018-09-24",
  week5_end: "2018-10-07",
  week5_start: "2018-10-01"
}
dateInfo = JSON.parse(`[${JSON.stringify(dateInfo).replace(/,("week[^1]_end)/g, '},{$1')}]`)

Previous: What if a vue-router dynamic route matches a normal route?

Next: About the return / previous step of PC/ mobile

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b31f23-34184.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b31f23-34184.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?