how to validate file extension in javascript

Fancy Fly answered on December 30, 2020 Popularity 9/10 Helpfulness 9/10

answer how to validate file extension in javascript

how to validate file extension in javascript

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//If your code above is simply trying to get the file extension of the filename then you can split the filename to an array by . and then use pop(). You can also put the valid extensions in an array and use indexOf() to check for validity. Try this:

var validExt = [ 'pdf', 'jpg', 'png' ];
var ext = this.value.split('.').pop();

if (validExt.indexOf(ext.toLowerCase()) == -1) {
    alert('Not allowed file type');
    this.value = '';
}

Popularity 9/10 Helpfulness 9/10 Language javascript

Source: Grepper

Tags: file-extension javascript

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Contributed on Dec 30 2020

Fancy Fly

0 Answers Avg Quality 2/10

how to validate file extension in javascript

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