在JavaScript中读取本地文本文件

Question

I just started learning JavaScript and I have a small problem. I have a text file with some text in it. I can read the content of the text file in browser (I mean in .hta) but the text appears as a single line. I want to add line breaks to each line. How do I do that?

Text file content:
I want to live where soul meets body
And let the sun wrap its arms around me
...

JS:

var fso = new ActiveXObject("Scripting.FileSystemObject");
var txtFile = fso.OpenTextFile("C:\\myJS\\test.txt", 1, false, 0);
var fText = txtFile.Read(1000);
document.write(fText);
txtFile.Close();
fso = null;

The output:
I want to live where soul meets body And let the sun wrap its arms around me ...

Any advice, suggestion is appreciated.

Answer 1

This happens because HTML doesn't recognize linebreaks in the text file. You need to add some HTML to your output. Something like this:

function readFile (path) {
    var fso = new ActiveXObject('Scripting.FileSystemObject'),
        iStream=fso.OpenTextFile(path, 1, false);
    while(!iStream.AtEndOfStream) {
        document.body.innerHTML += iStream.ReadLine() + '<br/>';
    }        
    iStream.Close();
}

This function reads the whole file. If you want to read exactly 1000 lines, you can use a for loop, but you'll need to check that the file is not shorter than 1000 lines by using AtEndOfStream property.

Just take care of this function is invoked within body tag, or in a window.onload handler. Notice, that my code uses DOM manipulation instead of document.write() .