使用js变量判断
const up1 = document.getElementById('up1');
up1.addEventListener('change', getdatetimeoriginal,false);
var isupload = true;
function getdatetimeoriginal(e){
var file = e.target.files[0];
var OriginalDate;
EXIF.getData(file, function(){
OriginalDate = EXIF.getTag(this, 'DateTimeOriginal');
});
if (!CheckDate(OriginalDate)){
//中止上传
isupload = false;
}
else{isupload = true;}
}
function submitForm(){
if (isupload ){
show("tst1",2000);
var result = submitAjaxForm('form1','',false);
if (result =='OK') {show('dlg1')}
else if (result == 'Photo') {show('dlg3')}
else {showDialog('dlg2','错误',result)}
}
}