jq表单验证插件（jquery获取表单数据）
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2022-08-31 08:05:21
from表单数据的合法性验证是个很常见的需求，jquery提供了一个插件：jquery validate 官网下载。 若想使用需先引用jquery.validate.js，并且要在jquery.j...
from表单数据的合法性验证是个很常见的需求，jquery提供了一个插件：jquery validate 官网下载。
若想使用需先引用jquery.validate.js，并且要在jquery.js之后引用。
<script src="//cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
<script src="js/jquery.validate.js"></script>把现在写的项目拿来演示一下，其使用了bootstrap框架。
$(function() {
jquery.validator.addmethod("regusername",
function(value, element) {
return this.optional(element) || /^[0-9]*[a-za-z_\u4e00-\u9fa5]+[0-9]*$/.test(value);
},
"注册昵称为4-10位数字、下划线、中文或英文字母，但不能全是数字"); jquery.validator.addmethod("ismobile",
function(value, element) {
var length = value.length;
var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/;
return this.optional(element) || (length == 11 && mobile.test(value));
},
"请正确填写您的手机号码"); //登录帐号合法性验证 jquery.validator.addmethod("logaccountcheck", function (value, element) { var length = value.length; var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/; return this.optional(element) || (length == 11 && mobile.test(value)) || /^[\u0391-\uffe5\w]+$/.test(value); }, "昵称不符合登录规则");$("#fillform").validate({ errorelement: 'span', errorclass: 'help-block', focusinvalid: false, rules: { new_username: { required: true, regusername: true, minlength: 4, maxlength: 10 }, new_userpwd: { required: true, rangelength: [5, 15] }, new_userpwd_twice: { required: true, equalto: "#new_userpwd" }, new_useremail: { required: true, email: true }, new_userphone: { required: true, ismobile:true, digits: true, minlength: 11, maxlength: 11 }, new_userbirth: { required: true }, new_usercollege: { required: true }, new_usermajor: { required: true } }, messages: { new_username: { required: '昵称不能为空', minlength: '昵称最少为4位', maxlength: '昵称最多为10位' }, new_userpwd: { required: '密码不能为空', rangelength: $.validator.format("密码长度必须在 {0} 到 {1} 之间") }, new_userpwd_twice: { required: '此项不能为空', equalto: '两次输入的密码必须一致' }, new_useremail: { required: '邮箱不能为空', email: '邮箱格式不正确(例如: xxx@xx.com)' }, new_userphone: { required: '电话号不能为空', digits: '电话号必须是数字', minlength: '电话号为11位', maxlength: '电话号为11位' }, new_userbirth: { required: '生日不能为空' }, new_usercollege: { required: '学院不能为空' }, new_usermajor: { required: '专业不能为空' } }, highlight: function (element) { $(element).closest('.form-group').addclass('has-error'); }, success: function (label) { label.closest('.form-group').removeclass('has-error').addclass('has-success'); label.remove(); }, errorplacement: function (error, element) { element.parent('div').after(error); }, submithandler: function (form) { var result = { "new_username": $("#new_username").val(), "new_userpwd": $("#new_userpwd").val(), "new_useremail": $("#new_useremail").val(), "new_userphone": $("#new_userphone").val(), "new_userbirth": $("#new_userbirth").val(), "new_usergender": $("input[name='new_usergender']:checked").val(), "new_usercollege": $("#new_usercollege").val() + ',' + $("#new_usermajor").val() }; result.new_userip = ip; var res = json.stringify(result); alert(res); return false; } })})
html文件跟平常一样，主要在js中进行验证：
$(function() {
jquery.validator.addmethod("regusername",
function(value, element) {
return this.optional(element) || /^[0-9]*[a-za-z_\u4e00-\u9fa5]+[0-9]*$/.test(value);
},
"注册昵称为4-10位数字、下划线、中文或英文字母，但不能全是数字"); jquery.validator.addmethod("ismobile",
function(value, element) {
var length = value.length;
var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/;
return this.optional(element) || (length == 11 && mobile.test(value));
},
"请正确填写您的手机号码"); //登录帐号合法性验证 jquery.validator.addmethod("logaccountcheck", function (value, element) { var length = value.length; var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/; return this.optional(element) || (length == 11 && mobile.test(value)) || /^[\u0391-\uffe5\w]+$/.test(value); }, "昵称不符合登录规则");$("#fillform").validate({ errorelement: 'span', errorclass: 'help-block', focusinvalid: false, rules: { new_username: { required: true, regusername: true, minlength: 4, maxlength: 10 }, new_userpwd: { required: true, rangelength: [5, 15] }, new_userpwd_twice: { required: true, equalto: "#new_userpwd" }, new_useremail: { required: true, email: true }, new_userphone: { required: true, ismobile:true, digits: true, minlength: 11, maxlength: 11 }, new_userbirth: { required: true }, new_usercollege: { required: true }, new_usermajor: { required: true } }, messages: { new_username: { required: '昵称不能为空', minlength: '昵称最少为4位', maxlength: '昵称最多为10位' }, new_userpwd: { required: '密码不能为空', rangelength: $.validator.format("密码长度必须在 {0} 到 {1} 之间") }, new_userpwd_twice: { required: '此项不能为空', equalto: '两次输入的密码必须一致' }, new_useremail: { required: '邮箱不能为空', email: '邮箱格式不正确(例如: xxx@xx.com)' }, new_userphone: { required: '电话号不能为空', digits: '电话号必须是数字', minlength: '电话号为11位', maxlength: '电话号为11位' }, new_userbirth: { required: '生日不能为空' }, new_usercollege: { required: '学院不能为空' }, new_usermajor: { required: '专业不能为空' } }, highlight: function (element) { $(element).closest('.form-group').addclass('has-error'); }, success: function (label) { label.closest('.form-group').removeclass('has-error').addclass('has-success'); label.remove(); }, errorplacement: function (error, element) { element.parent('div').after(error); }, submithandler: function (form) { var result = { "new_username": $("#new_username").val(), "new_userpwd": $("#new_userpwd").val(), "new_useremail": $("#new_useremail").val(), "new_userphone": $("#new_userphone").val(), "new_userbirth": $("#new_userbirth").val(), "new_usergender": $("input[name='new_usergender']:checked").val(), "new_usercollege": $("#new_usercollege").val() + ',' + $("#new_usermajor").val() }; result.new_userip = ip; var res = json.stringify(result); alert(res); return false; } })})
简单用法：
1.：rules里定义输入框规则，常见的有required, minlength, maxlength, email, 其中使用输入框的name属性来指定输入框。
2：messages里定义当输入内容不符合规则时显示的信息，如果自定义则显示默认的错误信息。
3：可以自定义规则，比如上面代码开头部分定义了自定义规则，可以根据自己的需求仿照代码即可，而且网上也提供了现成的自定义验证规则。
4：当输入框均符合规则时，可以点击提交，此时，会指定submithandler函数。