How to print a .txt file content in a html site with javascript every 1 s?
Question
I have a file in my directory which is constantly changing itself. So every 1 second my file is saved and has a diffenent content. 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?
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.
<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 answers
solution1
0 2019-03-30 15:19:52
I would go along the lines of
</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 :
<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>
solution2
0 2019-04-06 12:44:17
Use the following code:
<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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