我是编程新手。我正在尝试验证表单。我用 php 做到了(我使用的是 Codeigniter)，没有任何问题，工作正常。
说到 jquery 我遇到了麻烦。例如，对于用户名，如果输入有效，则应显示“确定”图标。为此，我有这个:
var FormValidation = function () {
var handleValidation2 = function() {
// for more info visit the official plugin documentation:
// http://docs.jquery.com/Plugins/Validation
var form2 = $('#form-val');
var error2 = $('.alert-error', form2);
var success2 = $('.alert-success', form2);
//IMPORTANT: update CKEDITOR textarea with actual content before submit
form2.on('submit', function() {
for(var instanceName in CKEDITOR.instances) {
CKEDITOR.instances[instanceName].updateElement();
}
})
form2.validate({
errorElement: 'span', //default input error message container
errorClass: 'help-inline', // default input error message class
focusInvalid: false, // do not focus the last invalid input
ignore: "",
rules: {
username: {
minlength: 2,
maxlength: 15,
regex: "^[a-zA-Z0-9]*[a-zA-Z]+[a-zA-Z0-9]*$",
required: true
},
name: {
minlength: 2,
maxlength: 50,
// regex: ,
required: true
},
lastname: {
minlength: 2,
maxlength: 50,
required: true
},
gender: {
required: true
},
date_born: {
required: true
},
email: {
required: true,
email: true
},
status: {
required: true
},
member_id: {
minlength: 5,
},
documentType_id: {
required: true
},
documentn: {
required: true,
minlength: 2
},
address_street: {
required: true
},
address_number: {
required: true
},
address_floor: {
required: false
},
zipcode: {
required: true
},
city: {
required: true
},
state: {
required: true
},
country_id: {
required: true
},
phone: {
required: true
},
cellphoneNumber: {
required: true
},
cellCompany: {
required: true
},
cellbrand: {
required: true
},
marital_status: {
required: true
},
sons: {
required: true
},
},
messages: { // custom messages for radio buttons and checkboxes
username: {
required: "Este campo es requerido",
minlength: "El nombre de usuario debe tener como mínimo 2 caracteres",
maxlength: "El nombre de usuario debe tener como máximo 15 caracteres",
},
membership: {
required: "Please select a Membership type"
},
service: {
required: "Please select at least 2 types of Service",
minlength: jQuery.format("Please select at least {0} types of Service")
}
},
errorPlacement: function (error, element) { // render error placement for each input type
if (element.attr("name") == "education") { // for chosen elements, need to insert the error after the chosen container
error.insertAfter("#form_2_education_chzn");
} else if (element.attr("name") == "membership") { // for uniform radio buttons, insert the after the given container
error.addClass("no-left-padding").insertAfter("#form_2_membership_error");
} else if (element.attr("name") == "editor1" || element.attr("name") == "editor2") { // for wysiwyg editors
error.insertAfter($(element.attr('data-error-container')));
} else if (element.attr("name") == "service") { // for uniform checkboxes, insert the after the given container
error.addClass("no-left-padding").insertAfter("#form_2_service_error");
} else {
error.insertAfter(element); // for other inputs, just perform default behavior
}
},
invalidHandler: function (event, validator) { //display error alert on form submit
success2.hide();
error2.show();
App.scrollTo(error2, -200);
},
highlight: function (element) { // hightlight error inputs
$(element)
.closest('.help-inline').removeClass('ok'); // display OK icon
$(element)
.closest('.control-group').removeClass('success').addClass('error'); // set error class to the control group
},
unhighlight: function (element) { // revert the change done by hightlight
$(element)
.closest('.control-group').removeClass('error'); // set error class to the control group
},
success: function (label) {
if (label.attr("for") == "service" || label.attr("for") == "membership") { // for checkboxes and radio buttons, no need to show OK icon
label
.closest('.control-group').removeClass('error').addClass('success');
label.remove(); // remove error label here
} else { // display success icon for other inputs
label
.addClass('valid').addClass('help-inline ok') // mark the current input as valid and display OK icon
.closest('.control-group').removeClass('error').addClass('success'); // set success class to the control group
}
},
submitHandler: function (form) {
success2.show();
error2.hide();
}
});
$('#form-val').select2({
placeholder: "Select an Option",
allowClear: true
});
//apply validation on chosen dropdown value change, this only needed for chosen dropdown integration.
$('.chosen, .chosen-with-diselect', form2).change(function () {
form2.validate().element($(this)); //revalidate the chosen dropdown value and show error or success message for the input
});
//apply validation on select2 dropdown value change, this only needed for chosen dropdown integration.
$('.select2', form2).change(function () {
form2.validate().element($(this)); //revalidate the chosen dropdown value and show error or success message for the input
});
}
return {
main function to initiate the module
init: function () {
handleValidation2();
}
};
}();
这是完整的代码，尚未完成更改。问题是，如果输入少于 2 个字符或大于 15 个字符，则会出现错误，但是当输入正确时，不会出现图标 ok，并且在检查时出现以下错误:
未捕获类型错误:无法调用未定义的方法“call”
如果我删除规则“regex”图标，则会出现“ok”。但正如您在代码片段中看到的那样，对于该字段，它不能正常工作。
问题可能是什么？提前谢谢。
最佳答案
如果您想匹配正则表达式而不编写自定义方法(如 Hayzeus 中的)答案，请加载 jquery-validate 附加方法:
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/additional-methods.min.js"></script>
然后您可以使用pattern验证方法:
username: {
minlength: 2,
maxlength: 15,
pattern: "[a-zA-Z0-9]*[a-zA-Z]+[a-zA-Z0-9]*",
required: true
},
该方法自动使用 ^ 和 $ 包装模式，因此您的正则表达式中不需要它们。
关于javascript - jquery正则表达式验证错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20981370/