Javascript verification the type of the uploaded file must be limited to some format_javascript skills

There are many ways to verify the file type to be uploaded. In this article, we will introduce in detail how js implements The Code is as follows:

// Verify the file format
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 ("the uploaded file must be an image, doc, ppt, xls, or txt file! ");
} Else {
ErrorObject. remove ();
}
}