本文示例用angularJS对form表单做输入验证，当所有值都输入正确时，则注册按钮可用。
页面：
html:
<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="../../vendor/bootstrap3/css/bootstrap.css" >
<script src="../../vendor/angular/angularjs.js"></script>
<script src="app/index.js"></script>
</head>
<body>
<div ng-app="myApp">
<div ng-controller="myCtrl">
<form name="myForm" action="1.PHP" class="container form-horizontal">
<!--用户名-->
<div class="form-group" ng-class="{'has-error':myForm.username.$dirty && myForm.username.$invalid}">
<label class="control-label col-sm-2">用户名</label>
<div class="col-sm-10">
<input type="text" class="form-control" name="username" autocomplete="off" ng-model="data.username" ng-required="true" ng-pattern="/^[a-zA-Z]{1}/" ng-minlength="5" ng-maxlength="10" placeholder="用户名(英文字母开头 长度>=5位 <=10位)">
<div ng-show="myForm.username.$dirty && myForm.username.$error.pattern" class="alert alert-danger help-block">
用户名必须以英文字母开始
</div>
<div ng-show="myForm.username.$dirty && myForm.username.$error.minlength" class="alert alert-danger help-block">
用户名长度不能小于5位
</div>
<div ng-show="myForm.username.$dirty && myForm.username.$error.maxlength" class="alert alert-danger help-block">
用户名长度不能超过10位
</div>
</div>
</div>
<!--密码-->
<div class="form-group" ng-class="{'has-error':myForm.password.$dirty && myForm.password.$invalid}">
<label class="control-label col-sm-2">密码</label>
<div class="col-sm-10">
<input type="password" class="form-control" name="password" autocomplete="off" ng-required="true" ng-minlength="5" ng-maxlength="10" ng-model="data.password" placeholder="密码(长度>=5位 <=10位)">
<div ng-show="myForm.password.$error.maxlength" class="alert alert-danger help-block">
密码长度不能超过10位
</div>
<div ng-show="myForm.password.$error.minlength" class="alert alert-danger help-block">
密码长度不能小于5位
</div>
</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 control-label">确认密码</label>
<div class="col-sm-10">
<input name="passwordConfirm" type="password" autocomplete="off" ng-required="true" ng-model="data.passwordConfirm" class="form-control" placeholder="确认密码(等于密码)">
<div ng-show="myForm.password.$dirty && myForm.passwordConfirm.$dirty && data.password != data.passwordConfirm" class="alert alert-danger help-block">
密码和确认密码不一致
</div>
</div>
</div>
<!--手机号 严格验证手机号：/^1(3|4|5|7|8)\d{9}$/ 仅验证首位是1和总长度 /^1\d{10}$/ -->
<div class="form-group" ng-class="{'has-error':myForm.mobile.$dirty && myForm.mobile.$invalid}">
<label class="col-sm-2 control-label">手机号</label>
<div class="col-sm-10">
<input name="mobile" type="text" autocomplete="off" ng-required="true" ng-model="data.mobile" ng-pattern="/^1\d{10}$/" class="form-control" placeholder="手机号(1开头的11数字)">
<div ng-show="myForm.mobile.$error.pattern" class="alert alert-danger help-block">
手机号格式不正确
</div>
</div>
</div>
<!-- 邮箱 type="email" -->
<div class="form-group" ng-class="{'has-error':myForm.email.$dirty && myForm.email.$invalid}">
<label class="col-sm-2 control-label">邮箱</label>
<div class="col-sm-10">
<input name="email" type="email" autocomplete="off" ng-required="true" ng-model="data.email" ng-maxlength="30" class="form-control" placeholder="邮箱(格式正确 不超30位)">
<div ng-show="myForm.email.$error.maxlength" class="alert alert-danger help-block">
邮箱长度不能超过30位
</div>
<div ng-show="myForm.email.$error.email" class="alert alert-danger help-block">
邮箱格式不正确
</div>
</div>
</div>
<!-- 网址： type="url" -->
<div class="form-group" ng-class="{'has-error':myForm.blog.$dirty && myForm.blog.$invalid}">
<label class="col-sm-2 control-label">博客网址</label>
<div class="col-sm-10">
<input name="blog" type="url" autocomplete="off" ng-required="true" ng-model="data.blog" class="form-control" placeholder="博客网址(http(s)://开头 格式正确)">
<div ng-show="myForm.blog.$error.url" class="alert alert-danger help-block">
博客网址格式不正确
</div>
</div>
</div>
<!-- 年龄-->
<div class="form-group" ng-class="{'has-error':myForm.age.$dirty && myForm.age.$invalid}">
<label class="col-sm-2 control-label">年龄</label>
<div class="col-sm-10">
<input name="age" type="number" min="3" autocomplete="off" ng-maxlength="2" ng-required="true" ng-model="data.age" class="form-control" placeholder="年龄(>=3的两位数字)">
<div ng-show="myForm.age.$error.maxlength" class="alert alert-danger help-block">
年龄不能超过2位数
</div>
<div ng-show="myForm.age.$error.min" class="alert alert-danger help-block">
年龄不能小于3
</div>
</div>
</div>
<!-- 单选 -->
<div class="form-group">
<label class="col-sm-2 control-label">性别</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" name="sex" ng-required="true" ng-model="data.sex" value="1"> 男
</label>
<label class="radio-inline">
<input type="radio" name="sex" ng-model="data.sex" value="0"> 女
</label>
</div>
</div>
<!-- 复选 -->
<div class="form-group">
<label class="col-sm-2 control-label">爱好</label>
<div class="col-sm-10">
<label class="checkBox-inline" ng-repeat="hobby in hobbies">
<input type="checkBox" name="hobby[]" ng-checked="data.hobbies === undefined ? false : (data.hobbies.indexOf(hobby.id)!=-1)" ng-click="toggleHobbySelection(hobby.id)" value="{{hobby.id}}"> {{hobby.name}}
</label>
</div>
</div>
<!-- 下拉框 -->
<div class="form-group">
<label class="col-sm-2 control-label">出生地</label>
<div class="col-sm-3">
<select class="form-control" ng-model="data.province" ng-options="x.id as x.name for x in cities | cityFilter : 0 " ></select>
</div>
<div class="col-sm-3">
<select class="form-control" ng-show="data.province" ng-model="data.city" ng-options="x.id as x.name for x in cities | cityFilter : data.province " ></select>
</div>
<div class="col-sm-3">
<select name="area" class="form-control" ng-show="data.province && data.city" ng-model="data.area" ng-required="true" ng-options="x.id as x.name for x in cities | cityFilter : data.city " ></select>
</div>
</div>
<!-- 自定义表单错误验证 -->
<div class="form-group" ng-class="{'has-error':myForm.even1.$dirty && myForm.even1.$invalid}">
<label class="col-sm-2 control-label">请输入偶数</label>
<div class="col-sm-10">
<input type="number" name="even1" class="form-control" placeholder="偶数" ng-model="data.myeven" even>
<div ng-show="myForm.even1.$error.even" class="alert alert-danger help-block">
数字必须是偶数
</div>
</div>
</div>
<!-- 自定义控件 -->
<div class="form-group">
<label class="control-label col-sm-2">个人介绍</label>
<div class="col-sm-10">
<custom-text-area ng-model="data.introduce"></custom-text-area>
</div>
</div>
<!-- 提交和重置 -->
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" ng-disabled="myForm.$invalid || data.hobbies === undefined || data.hobbies.length==0">注册</button>
<buttom type="reset" class="btn btn-default" ng-click="reset()">重置</buttom>
</div>
</div>
</form>
</div>
</div>
</body>
</html>js:
angular.module('myApp',[])
//自定义过滤器 用于省市区下拉框的联动
.filter('cityFilter',function(){
return function (data,parent){
var filterData=[];
angular.forEach(data,function(obj){
if(obj.parent === parent){
filterData.push(obj);
}
});
return filterData;
}
})
//自定义表单错误验证 指令even
.directive('even',function(){
return {
require:'ngModel',link:function(scope,ele,attrs,ngModelController){
//$parsers view到model要执行的函数数组
ngModelController.$parsers.push(function(viewValue){
if(viewValue %2 == 0){
ngModelController.$setValidity('even',true);
}else{
ngModelController.$setValidity('even',false);
}
console.log('view到model');
return viewValue;
});
//$formatters model到view要执行的函数数组
ngModelController.$formatters.push(function(modelValue){
console.log('model到view');
return modelValue * 100 ;
});
}
}
})
//自定义表单控件 指令custom-text-area
.directive('customTextArea',function(){
return{
restrict:'E',template:'<div style="border:1px solid #bbb;line-height:38px;" contenteditable="true" ></div>',replace:true,require:'ngModel',ngModelController){
ele.on('keyup',function(){
scope.$apply(function(){
ngModelController.$setViewValue(ele.html()); // view->model
});
});
ngModelController.$render=function(){
ele.html(ngModelController.$viewValue); // model->view
}
}
}
})
.controller('myCtrl',['$scope',function($scope){
var that =this; //当前环境上下文
//字典数据
$scope.cities=[
{name:'上海',parent:0,id:1},{name:'上海市',parent:1,id:2},{name:'徐汇区',parent:2,id:3},{name:'北京',id:4},{name:'北京市',parent:4,id:5},{name:'东城区',parent:5,id:6},{name:'西城区',id:7},{name:'昌平区',id:8},{name:'浙江',id:9},{name:'宁波',parent:9,id:10},{name:'杭州',id:11},{name:'宁波一区',parent:10,id:12},{name:'宁波二区',id:13}
];
this.findParentId=function(id){
var parentId=0;
angular.forEach($scope.cities,function(city){
if(city.id == id){
parentId=city.parent;
return;
}
});
return parentId;
};
$scope.hobbies=[
{id:1,name:'玩游戏'},{id:2,name:'写代码'},{id:3,name:'唱歌'}
];
//表单中默认的用户数据
$scope.data={
hobbies:[2],area:8
};
//先保留一份默认值
$scope.origData=angular.copy($scope.data);
//重置事件
$scope.reset=function(){
$scope.data=angular.copy($scope.origData);
$scope.myForm.$setPristine();//表单恢复原值
that.initCity();
};
//显示省市区
this.initCity=function(){
$scope.data.city=this.findParentId($scope.data.area);
$scope.data.province=this.findParentId($scope.data.city);
};
//网页刚刚打开执行
this.initCity.call(this);
//选择/取消爱好多选框 改变对应的model
$scope.toggleHobbySelection=function(hobbyId){
var index=-1;
if($scope.data.hobbies === undefined){
$scope.data.hobbies=[];
}else {
index=$scope.data.hobbies.indexOf(hobbyId);
}
if(index === -1){
$scope.data.hobbies.push(hobbyId);
}else{
$scope.data.hobbies.splice(index,1);
}
console.log($scope.data.hobbies);
};
}]);
表单输入不正确时：
全部输入正确时：
知识点：