javascript 强制 jQuery 验证器验证单个元素
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Forcing jQuery validator to validate a single element
提问by user1032531
On an edit page, I am using http://jqueryvalidation.org/to validate a form.
在编辑页面上，我使用http://jqueryvalidation.org/来验证表单。
//validate object set using external file linked to page
var myValidateObj = {
"rules": {
"foo": {"required": true,"maxlength": 45,"minlength": 2},
"bar": {"maxlength": 45},
},
"messages": {
"foo": {"required": "Foo is required.",},
"bar": {"maxlength": "bla bla."},
}
};
var validator=$("#myform").validate({
rules: myValidateObj.rules,
messages: myValidateObj.messages,
});
<form id="myForm">
Foo: <input type="text" name="foo" />
Bar: <input type="text" name="bar" />
<input type="submit" value="SAVE">
</form>
On another page, I am displaying the values of the previously described edit page, and allowing inline editing using http://vitalets.github.io/x-editable/. The validation rules and messages still apply, but now are only needed to validate a single field. Assuming the myValidateObjobject exists on this page, can it be used to validate a single field? For instance, within the editable validate callback, how can myValidateObjbe used to validate fooand return the appropriate message upon not passing validation?
在另一个页面上，我正在显示前面描述的编辑页面的值，并允许使用http://vitalets.github.io/x-editable/进行内联编辑。验证规则和消息仍然适用，但现在只需要验证单个字段。假设myValidateObj此页面上存在该对象，是否可以使用它来验证单个字段？例如，在可编辑的验证回调中，如何在未通过验证时myValidateObj验证foo并返回适当的消息？
$('#foo').editable({
type: 'text',
validate: function(value) {
//How do I use myValidateObj to validate foo and return applicable message???
}
});
Name: <a href="javascript:void(0)" id="foo"><?php echo($foo); ?></a>
Bla: <a href="javascript:void(0)" id="bar"><?php echo($bar); ?></a>
回答by Sparky
The .valid()method can be used to force an immediate validation test of a single element.
该.valid()方法可用于强制对单个元素进行即时验证测试。
$('#foo').valid();
http://jqueryvalidation.org/valid/
http://jqueryvalidation.org/valid/
FYI:
仅供参考：
The .validate()method is onlyused for initializingthe plugin on your form, not for triggering tests. Therefore, you still need to call .validate()once within DOM ready before you can use .valid().
该.validate()方法仅用于初始化表单上的插件，不用于触发测试。因此，您仍然需要.validate()在 DOM ready 内调用一次，然后才能使用.valid().
