在 jQuery Validate 插件中使用 addMethod
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Use addMethod in jQuery Validate plugin
提问by Erandi
I want to validate a text box using jQuery Validate plugin's custom validation method (addMethod) but my code doesn't work. Can anyone help me to find the error? I have never used custom validation method before so it's bit hard for me to find where I went wrong in this code.
我想使用 jQuery Validate 插件的自定义验证方法 (addMethod) 验证文本框，但我的代码不起作用。谁能帮我找出错误？我以前从未使用过自定义验证方法，因此我很难找到这段代码中出错的地方。
This is my code:
这是我的代码：
$(document).ready(function () {
jQuery.validator.setDefaults({
// where to display the error relative to the element
errorPlacement: function(error, element) {
error.appendTo(element.parent().find('div.myErrors'));
}
});
jQuery.validator.addMethod(
"selectnic"
function(value,element){
if(element.value == /^[0-9]{9}[vVxX]$/)
return false;
else return true;
},
"wrong nic number"
);
$('#basicDetails').validate({ // initialize the Plugin
rules: {
fname: {
required: true,
lettersonly: true,
},
lname: {
required: true,
lettersonly: true,
},
},
messages: {
fname: {
required:"Please enter your first name",
lettersonly: "Login format not valid",
},
lname: {
required:"Please enter your last name",
lettersonly: "Login format not valid",
},
},
submitHandler: function (form) {
alert('valid form submitted');
return false;
}
});
});
..html code ....
..html代码....
<form action="#" method="post" id="basicDetails" runat="server">
<table width="68%" border="0" cellpadding="6" cellspacing="6">
<tr>
<td> </td>
<td> First name </td>
<td>:</td>
<td><input type="text" name="fname" id="fname" class="textbox" placeholder="Required field"/><div class="myErrors"></div></td>
<td align="right"> Last name :</td>
<td><input type="text" name="lname" class="textbox" id="lname" placeholder="Required field"/><div class="myErrors"></div></td>
</tr>
<tr>
<td> </td>
<td width="147" > NIC no </td>
<td> : </td>
<td width="172"><input type="text" name="nic" id="nic" class="textbox" placeholder="Required field"/><div class="myErrors"></div></td>
<td width="167" align="right">Passport no :</td>
<td width="167" id="showPP"> <input type="text" name="passport" class="textbox" id="ppnu" placeholder="Required field"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td colspan="3"><input type="submit" name="submit" value="Submit "class="submit" id="submit" />
<input type="submit" name="reset" value="Reset "class="reset" />
</td>
</tr>
</table>
</form>
.....after editing my code ....
.....编辑我的代码后....
$(document).ready(function () {
jQuery.validator.setDefaults({
// where to display the error relative to the element
errorPlacement: function(error, element) {
error.appendTo(element.parent().find('div.myErrors'));
}
});
jQuery.validator.addMethod("selectnic", function(value, element){
if (/^[0-9]{9}[vVxX]$/.test(value)) {
return false;
} else {
return true;
};
}, "wrong nic number");
$('#basicDetails').validate({ // initialize the Plugin
rules: {
fname: {
required: true,
lettersonly: true,
},
lname: {
required: true,
lettersonly: true,
},
nicnumber: {
// other rules,
selectnic: true // <- declare the rule someplace!
}
},
messages: {
fname: {
required:"Please enter your first name",
lettersonly: "Login format not valid",
},
lname: {
required:"Please enter your last name",
lettersonly: "Login format not valid",
},
},
submitHandler: function (form) { // for demo
alert('valid form submitted'); // for demo
return false; // for demo
}
});
});
回答by Sparky
There are three different issues as outlined by the progressing edits below.
以下正在进行的编辑概述了三个不同的问题。
1)
You missed a comma just between selectnicand the function(.
1) 您在selectnic和之间错过了一个逗号function(。
Also, try this format instead when using regex...
另外，请在使用时尝试这种格式regex...
jQuery.validator.addMethod("selectnic", function(value, element){
if (/^[0-9]{9}[vVxX]$/.test(value)) {
return false; // FAIL validation when REGEX matches
} else {
return true; // PASS validation otherwise
};
}, "wrong nic number");
EDIT: This answer assumes your original regexand logic are both correct. Your logic returns falsewhen the regexis a match. falsemeans that validation failed and you will see the error message.
编辑：此答案假定您的原始regex逻辑和逻辑都是正确的。您的逻辑false在regex匹配时返回。 false表示验证失败，您将看到错误消息。
2) EDIT 2:
2）编辑2：
After creating new methods, you also have to usethem. I do not see the selectnicrule/method used anyplace in your code.
创建新方法后，您还必须使用它们。我没有看到selectnic您的代码中任何地方使用的规则/方法。
Example:
示例：
rules: {
myFieldName: {
// other rules,
selectnic: true // <- declare the rule someplace!
}
}
3) EDIT 3:
3）编辑3：
And finally, the OP's original true/falselogic was backwards. He wanted to PASS validation upon a regex match… therefore, needs to return true.
最后，OP 的原始true/false逻辑是倒退的。他想在正则表达式匹配时通过验证……因此，需要return true.
if (/^[0-9]{9}[vVxX]$/.test(value)) {
return true; // PASS validation when REGEX matches
} else {
return false; // FAIL validation
};
