使用javascript读取2个文本文件

问题描述：

我无法使用常规脚本或查询来获取JavaScript来加载2个文本文件，我需要帮助，请给与答复吗?

i can't get javascript to load 2 text files with regular script or query and i need help, plz give and answer?

这里是jquery，

<script type="text/javascript">
setTimeout(function(){
   window.location.reload(1);
}, 1000);
</script>
<script language="javascript" src="file:///Users/trevor/Desktop/jquery.js" ></script>
<script type="text/javascript">
jQuery.get('file:///Users/trevor/Desktop/x.txt', function(data) {
    document.getElementById('xp').innerHTML = data;
});
</script>
<script type="text/javascript">
jQuery.get('file:///Users/trevor/Desktop/y.txt', function(data) {
    document.getElementById('xp').innerHTML = data;
});
</script>
<p id="xp">hi</p>
<br>
<p id="yp">hi</p>

没有，

<script type="text/javascript">
var client = new XMLHttpRequest();
client.open('GET', 'file:///Users/trevor/Desktop/x.txt');
client.onreadystatechange = function() {
  document.getElementById('xp').innerHTML = client.responseText;
}
client.send();
</script>
<script type="text/javascript">
var client = new XMLHttpRequest();
client.open('GET', 'file:///Users/trevor/Desktop/y.txt');
client.onreadystatechange = function() {
  document.getElementById('yp').innerHTML = client.responseText;
}
client.send();
</script>

可能还有...

<script type="text/javascript">
var x = document.getElementById('x').contentWindow.getElementById('xp').innerHTML

var y = document.getElementById('y').contentWindow.getElementById('yp').innerHTML

function updatex(){document.getElementById(xp).innerHTML = x}

function updatey(){document.getElementById(yp).innerHTML = y}

setInterval( "updatex(); document.getElementById('x').contentWindow.location.reload();", 1000 );

setInterval( "updatey(); document.getElementById('y').contentWindow.location.reload();", 1000 );


</script>
<p id="xp">hi</p>
<br>
<p id="yp">hi</p>

<iframe id="x" src="file:///Users/trevor/Desktop/x.txt"></iframe>

<iframe id="y" src="file:///Users/trevor/Desktop/y.txt"></iframe>

答

您可以使用 setInterval 定期加载文件.这里有一些重构:

You can use setInterval to load the files periodically. Here's a little refactoring:

function loadFile(url, elementId){
    var client = new XMLHttpRequest();
    client.open('GET', url);
    client.onreadystatechange = function() {
      document.getElementById(elementId).innerHTML = client.responseText;
    }
    client.send();
}

现在您可以每秒两次拨打此电话:

Now you can call this twice, every second:

var interval = setInterval(function(){
                             loadFile('file:///Users/trevor/Desktop/x.txt', 'xp');
                             loadFile('file:///Users/trevor/Desktop/y.txt', 'yp');
                           },1000);

一些注意事项:

这可能在您的本地计算机上有效，但不适用于所有浏览器，并且一旦(/如果)该页面在服务器上，则肯定无法正常工作.
由于调用是异步的，因此可能对旧调用的响应将在新调用之后返回.您可能想要保留旧的client s并取消它们.
如果可能的话，一种替代方法是使用<iframe>，然后简单地定期刷新它们.

This may work from your local computer, but will not work on all browsers, and definitely not work once (/if) the page is on a server.
Since the calls are asynchronous, it is possible the response to an old call will return after a newer one. You may want to keep old clients and cancel them.
If possible, an alternative is to use <iframe>s, and simple refresh them periodically.

使用javascript读取2个文本文件

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