javascript get file extension

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showing results for - "javascript get file extension"
Caroline
20 Jul 2019
1var fileName = "myDocument.pdf";
2var fileExtension = fileName.split('.').pop(); //"pdf"
Esteban
18 Jan 2016
1var ext =  fileName.split('.').pop();
Marwane
09 Feb 2020
1var ext = fileName.substr(fileName.lastIndexOf('.') + 1);
Kim
25 Sep 2019
1// Use the lastIndexOf method to find the last period in the string, and get the part of the string after that:
2
3var ext = fileName.substr(fileName.lastIndexOf('.') + 1);
4
Niklas
31 Nov 2017
1var fileName = "myDocument.pdf";
2var fileExtension = fileName.split('.').pop(); //"pdf"
Lilya
14 Mar 2019
1function getFileNameWithExt(event) {
2
3  if (!event || !event.target || !event.target.files || event.target.files.length === 0) {
4    return;
5  }
6
7  const name = event.target.files[0].name;
8  const lastDot = name.lastIndexOf('.');
9
10  const fileName = name.substring(0, lastDot);
11  const ext = name.substring(lastDot + 1);
12
13  outputfile.value = fileName;
14  extension.value = ext;
15  
16}
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