我正在尝试使用jquery 表单验证器来验证具有多个输入字段和强制文件上传的表单。为简洁起见，我在示例中减少了 1 个文本输入字段和 1 个文件上传字段。问题是每次选择要上传的文件时，其他字段的验证将不起作用。
< script >
$.validate({
form: '#frmSlide',
modules: 'file',
validateOnBlur: false,
errorMessagePosition: 'top', // Instead of 'element' which is default
scrollToTopOnError: false, // Set this property to true if you have a long form
onError: function($form) {
alert('Failed!');
},
onSuccess: function($form) {
alert('ok!');
return false; // Will stop the submission of the form
},
onElementValidate: function(valid, $el, $form, errorMess) {
console.log('Input ' + $el.attr('name') + ' is ' + (valid ? 'VALID' : 'NOT VALID'));
}
});
$("#imgfile").on('change', function() {
var imgPath = $(this)[0].value;
var extn = imgPath.substring(imgPath.lastIndexOf('.') + 1).toLowerCase();
if (extn == "gif" || extn == "png" || extn == "jpg" || extn == "jpeg") {
if (typeof(FileReader) != "undefined") {
var image_holder = $("#image-holder");
image_holder.empty();
var reader = new FileReader();
reader.onload = function(e) {
$("<img />", {
"src": e.target.result,
"class": "thumb-image img-thumbnail"
}).appendTo(image_holder);
}
image_holder.show();
reader.readAsDataURL($(this)[0].files[0]);
} else {
alert("This browser does not support FileReader.");
}
} else {
alert("Pls select only images");
}
}); < /script><html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<title></title>
<link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=Aguafina+Script">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<link rel="stylesheet" href="css/theme.min.css">
<link rel="stylesheet" href="css/styles.css">
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<link rel="stylesheet" href="css/ie10-viewport-bug-workaround.css" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css" />
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/font-awesome/3.1.1/css/font-awesome.css" />
<link rel="stylesheet" href="//cdn.rawgit.com/Eonasdan/bootstrap-datetimepicker/e8bddc60e73c1ec2475f827be36e1957af72e2ea/build/css/bootstrap-datetimepicker.css" />
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/jquery-form-validator/2.2.8/theme-default.min.css" />
<link rel="stylesheet" href="css/typeaheadjs.css" />
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.11/css/dataTables.bootstrap.min.css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-form-validator/2.2.8/jquery.form-validator.min.js"></script>
</head>
<div class="container">
<div class="row">
<div class="col-sm-6 col-sm-offset-3">
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post" enctype="multipart/form-data" class="form-horizontal" id="frmSlide">
<div class="form-group">
<label class="col-sm-4 control-label" for="imgfile">Image file</label>
<div class="col-sm-8">
<input type="file" id="imgfile" data-validation="required ratio mime size" data-validation-allowing="jpg, png, gif" />
</div>
</div>
<div class="form-group">
<div class="col-sm-8 col-md-offset-4" id="image-holder">
</div>
</div>
<div class="form-group">
<label class="col-sm-4 control-label" for="seq">Sequence</label>
<div class="col-sm-8">
<input class="form-control server" name="f_seq" id="f_seq" data-validation="number" data-validation-allowing="range[1;4]" type="text" value="" placeholder="Enter 1-4" />
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-4 col-sm-8">
<button name="btnUpd" id="btnUpd" type="submit" class="clsUpd btn btn-primary"><i class="fa fa-floppy-o"></i> Update</button>
</div>
</div>
</form>
</div>
</div>
</div>
</html>谁能告诉我如何解决它？谢谢。