JavaScript implementation to get the size of the uploaded file with specified precision simple example

js implements the size of uploaded files with specified precision, mainly using html and JavaScript, and run the following code in the browser, and follow the order of operation: select file->get file size.

Source code:

&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
  &lt;meta charset="UTF-8"&gt;
  &lt;title&gt;Get file size&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
  &lt;form type="testForm" &gt;
    &lt;input type="file" &gt;
    &lt;input type="button"  value="Get file size" onclick="getSize();"/&gt;
  &lt;/form&gt;
  &lt;script type="text/javascript"&gt;
    function getSize(){
     var elt=("testFile");//Get file object      var len=[0].size/1024;//Get the file size and convert it into KB units, adopting the default accuracy      ("File Size: "+(2)+"KB");//Output the file size of the specified precision, here the precision is two decimal places    }
  &lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;

The above is the entire content of the simple example of javascript that the editor brings to you to obtain the size of the uploaded file with specified accuracy. I hope everyone supports me~