问获取浏览器中呈现文本的确切字体，可能有浏览器扩展名。

EN

// Look at the fiddle for full working code
function createFontTester(fontFamily) {
  var container = document.createElement('div');
  var tester = document.createElement('div');

  container.style.position = 'absolute';
  container.style.overflow = 'auto';
  container.style.visibility = 'hidden';

  tester.style.fontFamily = fontFamily;
  tester.style.display = 'inline';
  tester.style.visibility = 'hidden';

  // The size should be big enough to make a visual difference
  tester.style.fontSize = '100px'; 

  // Reset and prevent line breaks
  tester.style.fontWeight = 'normal';
  tester.style.fontStyle = 'normal';
  tester.style.letterSpacing = 'normal';
  tester.style.lineHeight = 'normal';
  tester.style.whiteSpace = 'nowrap';

  document.body.appendChild(container);
  container.appendChild(tester);

  return tester;
}