通过循环读取数据并将数据插入数组

Question

我正在尝试从 textarea 读取 CSV 数据，然后根据条件（如果它们通过或不通过）将它们推送到两个不同的数组中。我很挣扎，我理解为什么我的代码会多次插入数据（因为我的 for 循环，虽然我不知道如何解决这个问题）但我不知道为什么它将它们插入成功和失败的数组中。这是我迄今为止尝试过的 - 必须是纯 javascript - 请原谅我的命名不是很好的 atm：

var addValue = document.getElementById('example').value;
filter = /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/,
  num = /0{2,}|1{2,}|2{2,}|3{2,}|4{2,}|5{2,}/,
  cur = new Date(),
  abbr = ["PA", "CT", "NJ", "MA", "IL", "ID", "OR"],
  successArray = [];
failedArray = [];


if (addValue != "") {
  var CSVvalue = addValue.split(',');
  information.push(CSVvalue);
  for (var i = 0; i <= information.length - 1; i++) {
    for (var j = 0; j <= abbr.length - 1; j++) {
      var email = information[i][3],
        birthdate = new Date(information[i][2]),
        zipCode = information[i][5],
        diff = cur - birthdate,
        age = Math.floor(diff / 31536000000),
        state = information[i][4];


      if ((filter.test(email)) && (!num.test(zipCode)) && (age > 21) && ((state != abbr[j]))) {
        var lastSuccessArray = [];
        successArray.push(information);
        lastSuccessArray.push(successArray.slice(0));

      } else {
        var lastFailArray = [];
        failedArray.push(information);
        lastFailArray.push(failedArray.slice(0));
      }
    }
  }
} else {
  alert("You must enter a value");
}

Answer 1

就在推送成功数组检查之前

if ( failedArray.indexOf( information[i] ) == -1 )
 {
    successArray.push(information[i]);
 } 

对于失败的数组反之亦然

 if ( successArray.indexOf( information[i] ) == -1 )
 {
    failedArray.push(information[i]);
 } 

您的代码显然可以优化，但对于您而言，我们需要了解有关您的数组和逻辑的更多详细信息。

Answer 2

var addValue = document.getElementById('example').value;
filter = /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/,
  num = /0{2,}|1{2,}|2{2,}|3{2,}|4{2,}|5{2,}/,
  cur = new Date(),
  abbr = ["PA", "CT", "NJ", "MA", "IL", "ID", "OR"],
  successArray = [];
failedArray = [];
var information = [];//use array information in here 


if (addValue != "") {
  var CSVvalue = addValue.split(',');
  information.push(CSVvalue);
  for (var i = 0; i <= information.length - 1; i++) {
    //no need of forloop 'j' using in here
      var email = information[i][3],
        birthdate = new Date(information[i][2]),
        zipCode = information[i][5],
        diff = cur - birthdate,
        age = Math.floor(diff / 31536000000),
        state = information[i][4];

      if ((filter.test(email)) && (!num.test(zipCode)) && (age > 21) && ((abbr.indexOf(state) == -1))) {
        var lastSuccessArray = [];
        successArray.push(information);
        lastSuccessArray.push(successArray.slice(0));

      } else {
        var lastFailArray = [];
        failedArray.push(information);
        lastFailArray.push(failedArray.slice(0));
      }

  }
} else {
  alert("You must enter a value");
}

不要使用 forloop abbr 这会将值推送到 abbr 的长度。所以改为使用abbr.indexOf(state) == -1。