AJAX从文件中读取

问题描述

我是从一个文本文件中使用AJAX阅读。我如何只读了第一行？

I'm reading from a text file using AJAX. How do I read only the first line?

推荐答案

这code可以帮助你从远程文本文件阅读：

This code should help you read from a remote text file:

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "http://my.remote.url/myremotefile.txt", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText; 
      lines = txtFile.responseText.split("\n"); // Will separate each line into an array
    }
  }
}
txtFile.send(null);

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