JavaScript verifies that the type restriction of uploaded files must be in certain formats_javascript tips

Copy code The code is as follows:

//Verify the format of the file
function validateFile(){
var fileObject=$("#filename");
var errorObject=$("#error");
var filepath=fileObject.val();
var fileArr=filepath.split(" //");
var fileTArr=fileArr[fileArr.length-1].toLowerCase().split(".");
var filetype=fileTArr[fileTArr.length-1];
if (filetype!="xls"&&filetype!="xlsx"&&filetype!="doc"&&filetype!="docx"
&&filetype!="jpeg"&&filetype!="jpg"&&filetype!="ppt"&&filetype!=" pptx"
&&filetype!="txt"&&filetype!="bmp"&&filetype!="png"&&filetype!="gif"){
fileObject.focus();
errorObject.html("Upload file Must be a picture, doc, ppt, xls, txt file! ");
}else{
errorObject.remove();
}
}