function updateJsonPreview()

in script.js [1003:1024]

20 lines of code
6 McCabe index (conditional complexity)


  function updateJsonPreview() {
    if (!currentData) {
      jsonPreview.innerHTML = 'No data loaded yet.';
      return;
    }

    const jsonString = JSON.stringify(currentData, null, 2)
      .replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
      .replace(/("(\\u[\da-fA-F]{4}|\\[^u]|[^\\"])*")(\s*:)?|(\btrue\b|\bfalse\b|\bnull\b)|(-?\d+\.?\d*(?:[eE][+\-]?\d+)?)/g, match => {
        let cls = 'json-number';
        if (/^"/.test(match)) {
          cls = /:$/.test(match) ? 'json-key' : 'json-string';
        } else if (/true|false/.test(match)) {
          cls = 'json-boolean';
        } else if (/null/.test(match)) {
          cls = 'json-null';
        }
        return '<span class="' + cls + '">' + match + '</span>';
      });

    jsonPreview.innerHTML = jsonString;
  }