Continiously Tail A Local File For New Lines Using Javascript In A Browser

November 05, 2022 Post a Comment

I have a file that gets new lines appended to it frequently. I want to create a web application running in the browser using javascript that will be able to detect changes on that

Solution 1:

You can use js-logtail for following files like tail -f :

<head>
    <title>habitat parser log viewer</title>
    <script type="text/javascript" src="jquery.min.js"></script>
    <script type="text/javascript" src="logtail.js"></script>
    <link href="logtail.css"  type="text/css">
</head>

<body>
    <div id="header">
        js-logtail.
        <a href="./">Reversed</a> or
        <a href="./?noreverse">chronological</a> view.
        <a id="pause" href='#'>Pause</a>.
    </div>
    <pre id="data">Loading...</pre>
</body>

You don't even need a server side part, the webserver (as apache, lighthttpd) handles this with the HTTP Range header internally.

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Continiously Tail A Local File For New Lines Using Javascript In A Browser

Solution 1:

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