使用Javascript将纯文本字符串转换为表

Question

我对这个javascript练习摸不着头脑:我使用Ajax接收这个纯文本:

“201 George /  / ”
“301 Mary / 302 Lucy / ”
“401 Craig Da / 402 Ann / 403 Al Mia”

我需要像这样创建3个对象:

{
    "floor2": [{
        "apart": "201",
        "name": "George"
    }],
    "floor3": [{
        "apart": "301",
        "name": "Mary"
    }, {
        "apart": "302",
        "name": "Lucy"
    }],
    "floor4": [{
        "apart": "401",
        "name": "Craig D"
    }, {
        "apart": "402",
        "name": "Ann"
    }, {
        "apart": "403",
        "name": "Al Mia"
    }]
}

下面的表格只是一个直观的帮助。

Apartment 1   |   Name   |   Apartment 2   |   Name   |   Apartment 3   |   Name
--------------------------------------------------------------------------------
201           | George   |   -             |   -      |   -             |   -   
--------------------------------------------------------------------------------
301           | Mary     |   302           |   Lucy   |   -             |   -   
--------------------------------------------------------------------------------
401           | Craig D  |   402           |   Ann    |   403           |   Al Mia   

我有一个很长的代码，有很多数组中的数组，但我认为它可以在一个更干净的方式。

Answer 1

我很喜欢reduce。这应该能让你继续。我假设地板可以从数据中的位置导出，因为似乎没有更好的来源。

var text = ""201 George /  / "n"301 Mary / 302 Lucy / "n"401 Craig Da / 402 Ann / 403 Al Mia"";
var floors = text.split("n");
var buildingData = floors.reduce(function(floorAcc, floor, floorIndex){
  // get rid of the odd quotes.
  floor = floor.slice(1, -1);
  var units = floor.split("/");
  floorAcc["floor" + (floorIndex + 2)] = units.reduce(function(unitAcc, unit){
    var parts = unit.trim().split(" ");
    if (parts[0].trim() === ""){ return unitAcc; }
    unitAcc.push({"apartment" : parts[0], "name" : parts.slice(1).join(" ")});
    return unitAcc;
  }, []);
  return floorAcc;
}, {});
console.log(buildingData);

Answer 2

在ES6中的另一个例子

function customTransform(text) {
  const myData = {};
  const props = ['apart', 'name'];
  const rx = /“([sS]+?)”/g;
  let match = rx.exec(text);
  while (match) {
    const tenants = match.pop().split('/').map(m => m.trim()).filter(Boolean);
    if (tenants.length) {
      let floor = tenants[0].charAt(0);
      if (/^d$/.test(floor)) {
        floor = `floor${floor}`;
        myData[floor] = [];
        for (let tenant of tenants) {
          tenant = tenant.match(/^(d{3})s*([sS]*)$/);
          if (tenant) {
            tenant.shift();
            myData[floor].push(props.reduce((p, x) => {
              p[x] = tenant.shift();
              return p;
            }, {}));
          }
        }
        myData[floor].sort((a, b) => a.apart.localeCompare(b.apart));
      }
    }
    match = rx.exec(text);
  }
  return myData;
}
let text = '“201 George /  / ” 
“301 Mary / 302 Lucy / ” 
“401 Craig Da / 402 Ann / 403 Al Mia”';
console.log(customTransform(text));
text = '“ / 202 George / ” 
“ / 302 Mary / 303 Lucy ” 
“402 Craig Da / 403 Ann / 401 Al Mia”';
console.log(customTransform(text));
text = '“201 George /  / ”n“301 Mary / 302 Lucy / ”n“401 Craig Da / 402 Ann / 403 Al Mia”';
console.log(customTransform(text));