NakulTools-v1/Regex-Tester.html at main · nakulsh02/NakulTools-v1 · GitHub

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  <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Regex Tester</title>
       <link rel="icon" href="favicon.png">
  <style>
    body {
      font-family: Arial, sans-serif;
      background: #f1f9ff;
      padding: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .container {
      background: #fff;
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 0 10px rgba(0,0,0,0.05);
      width: 90%;
      max-width: 600px;
    }

    h2 {
      color: #007bff;
      text-align: center;
      margin-bottom: 20px;
    }

    input, .input-box {
      width: 100%;
      padding: 10px;
      font-size: 16px;
      margin: 10px 0;
      border-radius: 8px;
      border: 1px solid #ccc;
      box-sizing: border-box;
    }

    .input-box {
      min-height: 100px;
      background: #f9f9f9;
      white-space: pre-wrap;
      overflow-y: auto;
    }

    button {
      padding: 10px 20px;
      background-color: #007bff;
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 16px;
      cursor: pointer;
      margin-top: 10px;
    }

    button:hover {
      background-color: #0056b3;
    }

    #result {
      margin-top: 15px;
      background: #e7f9e9;
      padding: 10px;
      border-radius: 8px;
      font-size: 16px;
      white-space: pre-wrap;
      color: #333;
    }
  </style>
</head>
<body>

  <div class="container">
    <h2>Regex Tester</h2>

    <input type="text" id="regexInput" placeholder="Enter regular expression (e.g. \\d+)" />

    <div class="input-box" id="textInput" contenteditable="true" placeholder="Enter test string here..."></div>

    <button onclick="testRegex()">Test Regex</button>

    <div id="result"></div>
  </div>

  <script>
    function testRegex() {
      const pattern = document.getElementById("regexInput").value;
      const text = document.getElementById("textInput").innerText;
      const resultDiv = document.getElementById("result");

      try {
        const regex = new RegExp(pattern, 'g');
        const matches = [...text.matchAll(regex)];

        if (matches.length > 0) {
          let output = "Matches found:\n";
          matches.forEach((match, index) => {
            output += `${index + 1}: ${match[0]}\n`;
          });
          resultDiv.style.background = "#e7f9e9";
          resultDiv.textContent = output;
        } else {
          resultDiv.style.background = "#fff3cd";
          resultDiv.textContent = "No matches found.";
        }
      } catch (e) {
        resultDiv.style.background = "#f8d7da";
        resultDiv.textContent = "Invalid regular expression!";
      }
    }
  </script>

</body>
</html>