相关疑难解决方法(0)

我在href点击时触发文件上传.
我试图阻止除doc,docx和pdf之外的所有扩展.
我没有得到正确的警报值.

<div class="cv"> Would you like to attach you CV? <a href="" id="resume_link">Click here</a></div>
    <input type="file" id="resume" style="visibility: hidden">

使用Javascript:

        var myfile="";
        $('#resume_link').click(function() {
            $('#resume').trigger('click');
            myfile=$('#resume').val();
            var ext = myfile.split('.').pop();
            //var extension = myfile.substr( (myfile.lastIndexOf('.') +1) );

            if(ext=="pdf" || ext=="docx" || ext=="doc"){
                alert(ext);
            }
            else{
                alert(ext);
            }
         })

MyFiddle ..显示错误