セルの値がデータ検証ルールを満たしているかを確認

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紹介

C++経由のAspose.Cells for JavaScriptは、Cell.validationValueプロパティを提供し、セル値のプログラムによる検証を可能にします。セルの値がそのセルに適用されたデータ検証ルールを満たさない場合はfalseを返し、満たす場合はtrueを返します。

次のサンプルコードは、Cell.validationValueプロパティの動作例を示しています。まず、C1に値3を入力します。これはデータ検証ルールを満たさないため、Cell.validationValueプロパティはfalseを返します。次に、値15を入力すると、検証ルールを満たすため、trueを返します。同様に、値30に対してはfalseを返します。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Validation Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Validation Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, Utils } = AsposeCells;

        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            const resultDiv = document.getElementById('result');
            resultDiv.innerHTML = '';

            if (!fileInput.files.length) {
                resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Instantiating a Workbook object from uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Access the first worksheet
            const worksheet = workbook.worksheets.get(0);

            // Access Cell C1
            // Cell C1 has the Decimal Validation applied on it.
            // It can take only the values Between 10 and 20
            const cell = worksheet.cells.get("C1");

            // Enter 3 inside this cell (not between 10 and 20)
            cell.value = 3;

            // Check if number 3 satisfies the Data Validation rule applied on this cell
            const valid3 = cell.validationValue;
            console.log("Is 3 a Valid Value for this Cell: " + valid3);
            resultDiv.innerHTML += `<p>Is 3 a Valid Value for this Cell: ${valid3}</p>`;

            // Enter 15 inside this cell (between 10 and 20)
            cell.value = 15;

            // Check if number 15 satisfies the Data Validation rule applied on this cell
            const valid15 = cell.validationValue;
            console.log("Is 15 a Valid Value for this Cell: " + valid15);
            resultDiv.innerHTML += `<p>Is 15 a Valid Value for this Cell: ${valid15}</p>`;

            // Enter 30 inside this cell (not between 10 and 20)
            cell.value = 30;

            // Check if number 30 satisfies the Data Validation rule applied on this cell
            const valid30 = cell.validationValue;
            console.log("Is 30 a Valid Value for this Cell: " + valid30);
            resultDiv.innerHTML += `<p>Is 30 a Valid Value for this Cell: ${valid30}</p>`;
        });
    </script>
</html>

出力

 Is 3 a Valid Value for this Cell: false

Is 15 a Valid Value for this Cell: true

Is 30 a Valid Value for this Cell: false