如何在chrome扩展中阅读和显示文件

Question

我想在chrome扩展中读取和显示文件的内容(该文件已经在扩展目录中).怎么做？我是否可以使用HTML5来读取它？

  var elema3 = document.body.getElementsByClassName("slicefooter");
  elema3[0].innerHTML='Shanmuga Subramanian';

  var a1=chrome.extension.getURL('script1.txt');
  var reader = new FileReader();
  reader.readAsText(a1);

Answer 1

使用XMLHttpRequest.

例:

var xhr = new XMLHttpRequest();
xhr.open('GET', chrome.extension.getURL('script1.txt'), true);
xhr.onreadystatechange = function()
{
    if(xhr.readyState == XMLHttpRequest.DONE && xhr.status == 200)
    {
        //... The content has been read in xhr.responseText
    }
};
xhr.send();