Question

This code i put it in the HTML page for check the file value, and I want to add some secure values in the code

I need to edit this code:

 <script>
window.onload = function () {   var form = document.getElementById('forms'),       
imageInput = document.getElementById('img1');
    form.onsubmit = function () {     
    var isValid = /\.jpe?g$/i.test(imageInput.value); 
        if (!isValid) {      
         alert('Non allowed!');     
         }    
           return isValid;   }; };
</script>

I need to add more file values, like: gif, png, pdf, psd, etc.

Answer 1

Use OR

/\.(jpg|jpeg|gif|png|pdf|psd)$/i

Example:

var isValid = /\.(jpe?g|gif|png|pdf|psd)$/i.test(imageInput.src);