如何防止我的检查检查数组中空字符串的长度（JSON）

Question

问题：输入正确的syllables后，我的输入字段应该变成绿色按钮。但是现在出现了问题：输入是根据我的JSON文件的长度来确定它是否正确。因此，当我的数组syllables中包含2个单词而不是4个单词时，在达到相同长度之前，仍然需要2次“输入”。我该如何预防？

这是我的JSON文件之一的样子：

{
 "main_object": {
"id": "5",
"getExerciseTitle": "TestFor",
"language": "nl_NL",
"application": "lettergrepen",
"main_object": {
  "title": "TestFor",
  "language": "nl_NL",
  "exercises": [
    {
      "word": "test",
      "syllables": [
        "test01",
        "test02",
        "test03",
        ""
      ]
    },
    {
      "word": "tesst",
      "syllables": [
        "test11",
        "test12",
        "",
        ""
      ]
    }
  ]
},
"dataType": "json"
 }
}

函数的创建方式，不必介意增量计数器等。它们已经被声明。

function createExercise(json) {
const exercises = json.main_object.main_object.exercises;

var exerciseArea = $('<div/>', {
    id: 'exerciseField',
    'class': 'col-md-12'
});

$.map(exercises, function (exercise, i) {

    var exer = $('<div/>', {
        'class': 'row form-group',
        'id': +idRow++
    })

    var colLeft = $('<div/>', {
        'class': 'col-md-3'
    });

    var row = $('<div/>', {
        'class': 'row'
    });

    var audCol = $('<div>', {
        class: 'col-md-3 audioButton'
    }).append(getAudioForWords());

    var wordCol = $('<div>', {
        class: 'col-md-9 ExerciseWordFontSize exerciseWord',
        'id': 'wordInput[' + ID123 + ']', // note to self: the brackets will need to be escaped in later DOM queries
        text: exercise.word
    });
    row.append(audCol, wordCol);
    colLeft.append(row);

    var sylCol = $('<div>', {
        class: 'col-md-9'
    });

    var sylRow = $('<div/>', {
        class: 'row syll-row'
    });

    var correctSylls = [];

    $.map(exercise.syllables, function (syllable, j) {
        // Code to check if the syllable exists and is not an empty string
        if(!syllable){
            // If it doesn't exist or is an empty string, return early without creating/appending elements
            return;
        }
        var innerSylCol = $('<div/>', {
            class: 'col-md-3 inputSyllables'
        });

        var sylInput = $('<input/>', {
            'type': 'text',
            'class': 'form-control syl-input',
            'name':  +c++,
            'id': +idsyll++
        }).on('keyup', function() {
            var cValue = $(this).val();
            if (cValue === syllable) {
              correctSylls.push(cValue);
              console.log(correctSylls);
            }
            if (exercise.syllables.length === correctSylls.length) {
              $(this).closest('.syll-row').find('input.syl-input').addClass('btn btn-success').removeClass('form-control');
            }

        });

        innerSylCol.append(sylInput);
        sylRow.append(innerSylCol);
    });
    idsyll = 0;

    sylCol.append(sylRow);

    exer.append(colLeft, sylCol);

    exerciseArea.append(exer);
});
return exerciseArea;
}

引起问题的部分：

var correctSylls = [];

    $.map(exercise.syllables, function (syllable, j) {
        // Code to check if the syllable exists and is not an empty string
        if(!syllable){
            // If it doesn't exist or is an empty string, return early without creating/appending elements
            return;
        }
        var innerSylCol = $('<div/>', {
            class: 'col-md-3 inputSyllables'
        });

        var sylInput = $('<input/>', {
            'type': 'text',
            'class': 'form-control syl-input',
            'name':  +c++,
            'id': +idsyll++
        }).on('keyup', function() {
            var cValue = $(this).val();
            if (cValue === syllable) {
              correctSylls.push(cValue);
              console.log(correctSylls);
            }
            if (exercise.syllables.length === correctSylls.length) {
              $(this).closest('.syll-row').find('input.syl-input').addClass('btn btn-success').removeClass('form-control');
            }

        });

在检出此图片/控制台之前，请仔细查看JSON文件。这样您很可能会获得更好的画面！

如您所见，输入字段为绿色...但未正确完成。由于某种奇怪的原因，它在我的syllables数组中复制了一个单词，我必须按Enter键输入第二个单词，这样该数组将被4个单词填充，然后才能将它们变成绿色的输入字段。

我们将不胜感激。谢谢。