如何在JavaScript中读取.csv文件中的特殊字符

// HTML
<input type="file" id="csvFileInput">

// JavaScript
document.getElementById('csvFileInput').addEventListener('change', handleFile, false);

function handleFile(event) {
  const file = event.target.files[0];
  const reader = new FileReader();

  reader.onload = function(e) {
    const contents = e.target.result;
    const lines = contents.split('\n');

    for (let i = 0; i < lines.length; i++) {
      const line = lines[i];
      // 处理特殊字符，例如替换逗号为其他字符
      const processedLine = line.replace(/,/g, '|');
      console.log(processedLine);
    }
  };

  reader.readAsText(file);
}