如何使用javascript每1秒在html网站上打印.txt文件内容？
[英]How to print a .txt file content in a html site with javascript every 1 s?
问题描述
I have a file in my directory which is constantly changing itself. 
我的目录中有一个不断变化的文件。 So every 1 second my file is saved and has a diffenent content. 因此，我的文件每1秒保存一次，并且内容不同。 How can I display the file content in a HTML site using javascript in a way that the file content is updated in real time or every 1 s? 如何使用javascript以实时或每1秒更新文件内容的方式在HTML网站中显示文件内容？
I tried this code but the site just opens the pop-up window where the file content is and every time I want to see changes, I have to press F5, I don't want that. 我尝试了这段代码，但网站只是打开文件内容所在的弹出窗口，每次我想看到更改时，我都要按F5，我不希望这样。
<html>
<head>
</head>
<title>test</title>
<body>
<a href="output.txt">test</a><br>
<script>
var w = window.open('output.txt'); //Required full file path.
w.print();
</script>
</body>
</html>
2 个解决方案
解决方案1
0 2019-03-30 15:19:52
I would go along the lines of 我会顺其自然
</head>
<title>test</title>
<body>
<a href="output.txt">test</a><br>
<div id="text" ></div>
<script>
setInterval(()=>{
let t=new XMLHttpRequest()
t.open('GET',location.origin+'output.txt')
t.onreadystatechange=(ev)=>{
if(ev.readyState==4){
document.getELementById('text').textContent=t.responseText;
}
};
t.send()
},1000);
</script>
</body>
</html>
this way you wont get a new popup every second another way would be : 这样你每秒钟都不会得到一个新的弹出窗口：
<html>
<head>
</head>
<title>test</title>
<body>
<br>
<iframe id="text" src="output.txt" />
<script>
setInterval(()=>{
document.getElementById("text").contentWindow.location.reload();
},1000);
</script>
</body>
</html>
解决方案2
0 2019-04-06 12:44:17
Use the following code: 使用以下代码：
<html> <head> </head> <title>test</title> <body> <a href="output.txt">test</a><br> <script> var w = window.open('output.txt'); //Required full file path. w.print(); setInterval(function() { window.location.reload(true); }, 1000) </script> </body> </html>
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