JavaScript jQuery preventDefault and return false not working jquery preventdefault return false,preventdefault jquery return,jquery preventdefault vs

I'm trying to implement an image preview. It works fine until i came to a problem where i need to prevent the input file to not change.

JSFIDDLE

When trying to change to image its fine. After changing to image try to change the input file into a txt file. its alerting the correct error, but the input file is also changed.

$('body').on('change','.input-preview',function(e){
    var ito = $(this);
    var img = ito[0].files;
    var errs = [];
    for(x=0;x<img.length;x++){
        if(img[x].type!=='image/jpeg' && img[x].type!=='image/gif' && img[x].type!=='image/png'){
            errs.push('Not image.');
            break;
        }
        if(img[x].size>(1024000 * 5)){ 
            errs.push('File is too big.');
            break;
        }
    }
    if(errs.length){
        e.preventDefault();
        alert(errs[0]);
        return false;
    }else{
      previewIt(this, $('.preview-profile'));
    }
  });
Answer:1

The change event is not cancelable. See the document on MDN.

Answer:2

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