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這篇文章主要為大家展示了“angular如何實(shí)現(xiàn)form驗(yàn)證”,內(nèi)容簡(jiǎn)而易懂,條理清晰,希望能夠幫助大家解決疑惑,下面讓小編帶領(lǐng)大家一起研究并學(xué)習(xí)一下“angular如何實(shí)現(xiàn)form驗(yàn)證”這篇文章吧。
先上效果頁面:
其中幾個(gè)知識(shí)點(diǎn)
1、angularJs提供了幾個(gè)新的type類型:
type="password" type="email" type="number" type="url"
2、幾個(gè)參數(shù)含義
ng-required //是否必填,true/false
ng-minlength //最小長(zhǎng)度,數(shù)字
ng-maxlength //最大長(zhǎng)度,數(shù)字
min //最小數(shù)字,數(shù)字,僅在type="number"下
max //最小數(shù)字,數(shù)字,僅在type="number"
3、幾個(gè)form控制變量,先來一段代碼
<form role="form" name="myform" > <div class="form-group" > <label class="col-sm-2">用戶名</label> <div class="col-sm-8"> <input type="text" name="username" class="form-control" placeholder="請(qǐng)輸入用戶名"></div> </div> </form>
formName.inputFieldName.$pristine //字段是否未更改,對(duì)應(yīng)上面的html代碼即為 myform.username.$pristine formName.inputFieldName.$dirty //字段是否更改,對(duì)應(yīng)上面的html代碼即為 myform.username.$dirty formName.inputFieldName.$valid //字段有效,對(duì)應(yīng)上面的html代碼即為 myform.username.$valid formName.inputFieldName.$invalid //字段無效,對(duì)應(yīng)上面的html代碼即為 myform.username.$invalid formName.inputFieldName.$error //字段錯(cuò)誤信息,使用頻率比較高,對(duì)應(yīng)上面的html代碼即為 myform.username.$error
4、下面直接上代碼,首先是html代碼,使用了bootstrap.css樣式,在結(jié)尾引入了angular
<!DOCTYPE html> <html> <head> <title>form驗(yàn)證</title> <link rel="stylesheet" type="text/css" href="style/bootstrap.css"> </head> <body ng-app="formModule"> <div > <form role="form" name="myform" class="form-horizontal container" ng-controller="formctrl"> <!-- 用戶名 --> <div class="form-group" ng-class="{'has-error':myform.username.$dirty && myform.username.$invalid}"> <label class="col-sm-2">用戶名</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="請(qǐng)輸入用戶名"></div> <div class="col-sm-2 text-danger" ng-show="myform.username.$error.minlength">用戶名必須大于5位</div> <div class="col-sm-2" ng-show="myform.username.$error.maxlength">用戶名必須小于于10位</div> </div> <!-- 密碼 --> <div class="form-group" ng-class="{'has-error':myform.password.$dirty&&myform.password.$invalid}"> <label class="col-sm-2">密 碼</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="請(qǐng)輸入密碼"></div> <div class="col-sm-2 text-danger" ng-show="myform.password.$error.minlength">密碼必須大于10位</div> </div> <!-- 確認(rèn)密碼 --> <div class="form-group" ng-class="{'has-error':myform.passwordconfirm.$dirty&&myform.passwordconfirm.$invalid}"> <label class="col-sm-2">確認(rèn)密碼</label> <div class="col-sm-8"> <input type="password" name="passwordconfirm" ng-required="true" ng-model="data.passwordconfirm" class="form-control" placeholder="請(qǐng)輸入確認(rèn)密碼"></div> <div class="col-sm-2 text-danger" ng-show="data.passwordconfirm!=data.password&&myform.password.$dirty&&myform.passwordconfirm.$dirty">兩次密碼不一致</div> </div> <!-- 郵箱 --> <div class="form-group" ng-class="{'has-error':myform.email.$dirty&&myform.email.$invalid}"> <label class="col-sm-2">郵 箱</label> <div class="col-sm-8"> <input type="email" name="email" ng-required="true" ng-model="data.email" class="form-control" placeholder="請(qǐng)輸入郵箱地址"></div> <div class="col-sm-2 text-danger" ng-show="myform.email.$error.email">請(qǐng)輸入正確郵箱地址</div> </div> <!-- 博客 --> <div class="form-group" ng-class="{'has-error':myform.age.$dirty&&myform.age.$invalid}"> <label class="col-sm-2">年 齡</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="請(qǐng)輸入您的年齡"></div> <div class="col-sm-2 text-danger" ng-show="myform.age.$error.min&&myform.age$error.max">請(qǐng)輸入正確年齡</div> </div> <!-- 年齡 --> <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="請(qǐng)輸入博客地址"></div> <div class="col-sm-2 text-danger" ng-show="myform.blog.$error.url">請(qǐng)輸入正確博客地址</div> </div> <!-- 性別 --> <div class="form-group"> <label class="col-sm-2">性 別</label> <div class="col-sm-8"> <label class="radio-inline"> <input type="radio" value="1" ng-model="data.sex" name="sex"> 男</label> <label class="radio-inline"> <input type="radio" value="2" ng-model="data.sex" name="sex"> 女</label> </div> </div> <!-- 愛好 --> <div class="form-group"> <label class="col-sm-2">愛 好</label> <div class="col-sm-8"> <label ng-repeat="hoppy in hoppies" class="checkbox-inline"> <input type="checkbox" name="hoppy[]" ng-click="togglehoppy()" ng-model="hoppy.checked" >{{hoppy.name}} </label> </div> <div class="col-sm-2">{{data.Ahoppy.join('、')}}</div> </div> <!-- 地址 --> <div class="form-group"> <label class="col-sm-2">地 址</label> <div class="col-sm-3"> <select class="form-control" ng-model="data.provinec" ng-options="x.id as x.name for x in cities | cityfilter:0"></select> </div> <div class="col-sm-3"> <select class="form-control" ng-show="data.provinec" ng-model="data.area" ng-options="x.id as x.name for x in cities | cityfilter:data.provinec"></select> </div> <div class="col-sm-3"> <select class="form-control" ng-show="data.area" ng-model="data.city" ng-options="x.id as x.name for x in cities | cityfilter:data.area"></select> </div> </div> </form> </div> <script src="js/angular.js"></script> <script src="js/app.js"></script> </body> </html>
下面為js代碼(可能其中有些不妥之處,請(qǐng)指正,謝謝)
(function(window) { 'use strict'; var mymodule = angular.module('formModule', []); // 城市刪選器 mymodule.filter('cityfilter',function(){ return function(data,parent){ var cityData=[]; angular.forEach(data, function(item, key){ if(item.parent==parent){ cityData.push(item); } }); return cityData; } }); mymodule.controller('formctrl', ['$scope', function($scope) { // 設(shè)定初始狀態(tài) $scope.data={ Ahoppy:[1,3] } // 愛好對(duì)象 $scope.hoppies = [ {id: 1,name: '玩游戲',checked: istrue(1)}, {id: 2,name: '吃飯',checked: false}, {id: 3,name: '睡覺',checked: false}, {id: 4,name: '玩游戲',checked: true} ]; // 城市 $scope.cities=[ {name:'河南',parent:0,id:1}, {name:'鄭州',parent:1,id:2}, {name:'鄭東新區(qū)',parent:2,id:3}, {name:'金水區(qū)',parent:2,id:4}, {name:'二七區(qū)',parent:2,id:5}, {name:'信陽',parent:1,id:6}, {name:'商城',parent:6,id:7}, {name:'羅山',parent:6,id:8}, {name:'杭州',parent:0,id:9}, {name:'西湖區(qū)',parent:9,id:10}, {name:'余杭區(qū)',parent:9,id:11}, {name:'蕭山區(qū)',parent:9,id:12}, {name:'上城區(qū)',parent:9,id:13}, ]; // 判斷是否是選中狀態(tài) function istrue(id){ for(var i=0;i<$scope.data.Ahoppy.length;i++){ if($scope.data.Ahoppy[i]===id){ return true; } } return false; }; // 獲取選中的愛好 $scope.togglehoppy = function() { $scope.data.Ahoppy = []; angular.forEach($scope.hoppies, function(item, key) { if (item.checked == true) { $scope.data.Ahoppy.push(item.id); } }); } }]) })(window)
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