angular实现form验证
先上效果页面：https://lpdong.github.io/myForm-1/
其中几个知识点
1、angularJs提供了几个新的type类型：
type="password" type="email" type="number" type="url"
2、几个参数含义
ng-required //是否必填，true/false ng-minlength //最小长度，数字 ng-maxlength //最大长度，数字 min //最小数字，数字，仅在type="number"下 max //最小数字，数字，仅在type="number"
3、几个form控制变量，先来一段代码
<form role="form" name="myform" > <div class="form-group" > <label class="col-sm-2">用户名</label> <div class="col-sm-8"> <input type="text" name="username" class="form-control" placeholder="请输入用户名"></div> </div> </form>
formName.inputFieldName.$pristine //字段是否未更改,对应上面的html代码即为 myform.username.$pristine formName.inputFieldName.$dirty //字段是否更改,对应上面的html代码即为 myform.username.$dirty formName.inputFieldName.$valid //字段有效,对应上面的html代码即为 myform.username.$valid formName.inputFieldName.$invalid //字段无效,对应上面的html代码即为 myform.username.$invalid formName.inputFieldName.$error //字段错误信息，使用频率比较高,对应上面的html代码即为 myform.username.$error
4、下面直接上代码，首先是html代码，使用了bootstrap.css样式，在结尾引入了angular
<!DOCTYPE html> <html> <head> <title>form验证</title> <link rel="stylesheet" type="text/css" href="style/bootstrap.css"> </head> <body ng-app="formModule"> <div style="margin-top: 60px;"> <form role="form" name="myform" class="form-horizontal container" ng-controller="formctrl"> <!-- 用户名 --> <div class="form-group" ng-class="{'has-error':myform.username.$dirty && myform.username.$invalid}"> <label class="col-sm-2">用户名</label> <div class="col-sm-8"> <input type="text" name="username" ng-minlength="5" ng-maxlength="10" ng-required="true" ng-model="data.username" class="form-control" placeholder="请输入用户名"></div> <div class="col-sm-2 text-danger" ng-show="myform.username.$error.minlength">用户名必须大于5位</div> <div class="col-sm-2" ng-show="myform.username.$error.maxlength">用户名必须小于于10位</div> </div> <!-- 密码 --> <div class="form-group" ng-class="{'has-error':myform.password.$dirty&&myform.password.$invalid}"> <label class="col-sm-2">密 码</label> <div class="col-sm-8"> <input type="password" name="password" ng-minlength="10" ng-required="true" ng-model="data.password" class="form-control" placeholder="请输入密码"></div> <div class="col-sm-2 text-danger" ng-show="myform.password.$error.minlength">密码必须大于10位</div> </div> <!-- 确认密码 --> <div class="form-group" ng-class="{'has-error':myform.passwordconfirm.$dirty&&myform.passwordconfirm.$invalid}"> <label class="col-sm-2">确认密码</label> <div class="col-sm-8"> <input type="password" name="passwordconfirm" ng-required="true" ng-model="data.passwordconfirm" class="form-control" placeholder="请输入确认密码"></div> <div class="col-sm-2 text-danger" ng-show="data.passwordconfirm!=data.password&&myform.password.$dirty&&myform.passwordconfirm.$dirty">两次密码不一致</div> </div> <!-- 邮箱 --> <div class="form-group" ng-class="{'has-error':myform.email.$dirty&&myform.email.$invalid}"> <label class="col-sm-2">邮 箱</label> <div class="col-sm-8"> <input type="email" name="email" ng-required="true" ng-model="data.email" class="form-control" placeholder="请输入邮箱地址"></div> <div class="col-sm-2 text-danger" ng-show="myform.email.$error.email">请输入正确邮箱地址</div> </div> <!-- 博客 --> <div class="form-group" ng-class="{'has-error':myform.age.$dirty&&myform.age.$invalid}"> <label class="col-sm-2">年 龄</label> <div class="col-sm-8"> <input type="number" name="age" ng-required="true" min="10" max="99" ng-model="data.age" class="form-control" placeholder="请输入您的年龄"></div> <div class="col-sm-2 text-danger" ng-show="myform.age.$error.min&&myform.age$error.max">请输入正确年龄</div> </div> <!-- 年龄 --> <div class="form-group" ng-class="{'has-error':myform.blog.$dirty&&myform.blog.$invalid}"> <label class="col-sm-2">博 客</label> <div class="col-sm-8"> <input type="url" name="blog" ng-required="true" ng-model="data.blog" class="form-control" placeholder="请输入博客地址"></div> <div class="col-sm-2 text-danger" ng-show="myform.blog.$error.url">请输入正确博客地址</div> </div> <!-- 性别 --> <div class="form-group"> <label class="col-sm-2">性 别</label> <div class="col-sm-8"> <label class="radio-inline"> <input type="radio" value="1" ng-model="data.sex" name="sex"> 男</label> <label class="radio-inline"> <input type="radio" value="2" ng-model="data.sex" name="sex"> 女</label> </div> </div> <!-- 爱好 --> <div class="form-group"> <label class="col-sm-2">爱 好</label> <div class="col-sm-8"> <label ng-repeat="hoppy in hoppies" class="checkbox-inline"> <input type="checkbox" name="hoppy[]" ng-click="togglehoppy()" ng-model="hoppy.checked" >{{hoppy.name}} </label> </div> <div class="col-sm-2">{{data.Ahoppy.join('、')}}</div> </div> <!-- 地址 --> <div class="form-group"> <label class="col-sm-2">地 址</label> <div class="col-sm-3"> <select class="form-control" ng-model="data.provinec" ng-options="x.id as x.name for x in cities | cityfilter:0"></select> </div> <div class="col-sm-3"> <select class="form-control" ng-show="data.provinec" ng-model="data.area" ng-options="x.id as x.name for x in cities | cityfilter:data.provinec"></select> </div> <div class="col-sm-3"> <select class="form-control" ng-show="data.area" ng-model="data.city" ng-options="x.id as x.name for x in cities | cityfilter:data.area"></select> </div> </div> </form> </div> <script src="js/angular.js"></script> <script src="js/app.js"></script> </body> </html>
下面为js代码（可能其中有些不妥之处，请指正，谢谢）
(function(window) { 'use strict'; var mymodule = angular.module('formModule', []); // 城市删选器 mymodule.filter('cityfilter',function(){ return function(data,parent){ var cityData=[]; angular.forEach(data, function(item, key){ if(item.parent==parent){ cityData.push(item); } }); return cityData; } }); mymodule.controller('formctrl', ['$scope', function($scope) { // 设定初始状态 $scope.data={ Ahoppy:[1,3] } // 爱好对象 $scope.hoppies = [ {id: 1,name: '玩游戏',checked: istrue(1)}, {id: 2,name: '吃饭',checked: false}, {id: 3,name: '睡觉',checked: false}, {id: 4,name: '玩游戏',checked: true} ]; // 城市 $scope.cities=[ {name:'河南',parent:0,id:1}, {name:'郑州',parent:1,id:2}, {name:'郑东新区',parent:2,id:3}, {name:'金水区',parent:2,id:4}, {name:'二七区',parent:2,id:5}, {name:'信阳',parent:1,id:6}, {name:'商城',parent:6,id:7}, {name:'罗山',parent:6,id:8}, {name:'杭州',parent:0,id:9}, {name:'西湖区',parent:9,id:10}, {name:'余杭区',parent:9,id:11}, {name:'萧山区',parent:9,id:12}, {name:'上城区',parent:9,id:13}, ]; // 判断是否是选中状态 function istrue(id){ for(var i=0;i<$scope.data.Ahoppy.length;i++){ if($scope.data.Ahoppy[i]===id){ return true; } } return false; }; // 获取选中的爱好 $scope.togglehoppy = function() { $scope.data.Ahoppy = []; angular.forEach($scope.hoppies, function(item, key) { if (item.checked == true) { $scope.data.Ahoppy.push(item.id); } }); } }]) })(window)
