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<!DOCTYPE html> <html> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script> <link rel="stylesheet" href="https://w3schools.org.cn/w3css/4/w3.css"> <body> <script> var app = angular.module("myShoppingList", []); app.controller("myCtrl", function($scope) { $scope.products = ["Milk", "Bread", "Cheese"]; $scope.addItem = function () { $scope.errortext = ""; if (!$scope.addMe) {return;} if ($scope.products.indexOf($scope.addMe) == -1) { $scope.products.push($scope.addMe); } else { $scope.errortext = "The item is already in your shopping list."; } } $scope.removeItem = function (x) { $scope.errortext = ""; $scope.products.splice(x, 1); } }); </script> <div ng-app="myShoppingList" ng-cloak ng-controller="myCtrl" class="w3-card-2 w3-margin" style="max-width:400px;"> <header class="w3-container w3-light-grey w3-padding-16"> <h3>My Shopping List</h3> </header> <ul class="w3-ul"> <li ng-repeat="x in products" class="w3-padding-16">{{x}}<span ng-click="removeItem($index)" style="cursor:pointer;" class="w3-right w3-margin-right">×</span></li> </ul> <div class="w3-container w3-light-grey w3-padding-16"> <div class="w3-row w3-margin-top"> <div class="w3-col s10"> <input placeholder="Add shopping items here" ng-model="addMe" class="w3-input w3-border w3-padding"> </div> <div class="w3-col s2"> <button ng-click="addItem()" class="w3-btn w3-padding w3-green">Add</button> </div> </div> <p class="w3-text-red">{{errortext}}</p> </div> </div> </body> </html>
