如何在使用 jQuery 验证的 AJAX 调用后手动使字段无效
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How to manually invalidate fields after AJAX call with jQuery validate
提问by Praveen Prasad
Note: the below code is just for demonstration and I am using jQuery and jQuery validate plugin.
注意：以下代码仅用于演示，我使用的是 jQuery 和 jQuery 验证插件。
Suppose I have a form with two fields (email and inventory number):
假设我有一个包含两个字段（电子邮件和库存编号）的表单：
<form action="/something" method="post" id="demoForm">
Inventory No: <input type="text" class="required" name="inventory_no" />
Email: <input type="text" class="required" name="email" />
<input type='submit' value='submit' />
</form>
Binding plugin to form:
将插件绑定到表单：
jQuery(function(){
jQuery('#demoForm').validate();
});
//handle user submit
jQuery('#demoForm').bind('submit', function (e) {
e.preventDefault();
if (jQuery(e.target).valid()) {
//form is valid submit request thru ajax
jQuery.ajax({
/*more options here*/
success: function (data) {
/*
Server process request and finds that, email is already in use
and inventory number is invalid
so it sends data in some format may pe JSon
with field names and message indicating errors
eg: Email:"Already in use"
InventoryNo: "Invalid Inventory No",
Now can i invalidate these two fields on form mannualy
and display the message received from server for each field
*/
}
});
}
});
回答by iboware
If you know which field is invalid, you can use this function. http://docs.jquery.com/Plugins/Validation/Validator/showErrors
如果您知道哪个字段无效，则可以使用此功能。 http://docs.jquery.com/Plugins/Validation/Validator/showErrors
var validator = $( "#myshowErrors" ).validate();
validator.showErrors({
"firstname": "I know that your firstname is Pete, Pete!"
});
Where firstnameis the name property of your field; ie name="firstname".
firstname您的字段的名称属性在哪里；即name="firstname"。
