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I want to append a random number or a timestamp at the end of the javascript file source path in so that every time the page reloads it should download a fresh copy.
it should be like
<script type="text/javascript" src="/js/1.js?v=1234455"/> How can i generate and append this number? This is a simple HTML page, so cant use any PHP or JSP related code
574
Insert the script dynamically via document. createElement('script') , then when you set the URL, you can use new Date(). getTime() to append the extra parameter. Sorry, math random will add a point to the source, and unescaped this will lead to errors.
If you instead want to get the current time stamp, you can create a new Date object and use the getTime() method. const currentDate = new Date(); const timestamp = currentDate. getTime(); In JavaScript, a time stamp is the number of milliseconds that have passed since January 1, 1970.
Answer: Use the Date. now() Method You can simply use the JavaScript Date. now() method to generate the UTC timestamp in milliseconds (which is the number of milliseconds since midnight Jan 1, 1970).
Method 1
Lots of extensions can be added this way including Asynchronous inclusion and script deferring. Lots of ad networks and hi traffic sites use this approach.
<script type="text/javascript"> (function(){ var randomh=Math.random(); var e = document.getElementsByTagName("script")[0]; var d = document.createElement("script"); d.src = "//site.com/js.js?x="+randomh+""; d.type = "text/javascript"; d.async = true; d.defer = true; e.parentNode.insertBefore(d,e); })(); </script> Method 2 (AJZane's comment)
Small and robust inclusion. You can see exactly where JavaScript is fired and it is less customisable (to the point) than Method 1.
<script>document.write("<script type='text/javascript' src='//site.com /js.js?v=" + Date.now() + "'><\/script>");</script> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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