简话Angular 06 Angular自定义指令

一句话: 直接return link函数可以解决大多数问题,无须死扣用法

1. 上源码 (dom操作,事件,css,mode操作全包括了)

<h3>Custom directive, with dom operation, events, css and scope model operation</h3> 
        

        <div ng-controller="DateController">
          Date format: <input ng-model="format"> <hr/>
          Current time is: <span my-current-time="format"></span>
        </div>



        <script>
        var myApp = angular.module('myApp', []);

        myApp.controller('DateController', function($scope) {
            $scope.format = "M/d/yy h:mm:ss a";
        });
        
        myApp.directive('myCurrentTime', ['$interval', 'dateFilter', function($interval, dateFilter) {
            function link(scope, element, attrs) {
                var format, timeoutId;

                function getRandomColor() {
                    var letters = '0123456789ABCDEF'.split('');
                    var color = '#';
                    for (var i = 0; i < 6; i++ ) {
                        color += letters[Math.floor(Math.random() * 16)];
                    }
                    return color;
                }

                function updateTime() {
                    element.text(dateFilter(new Date(), format));
                    element.css({'background-color': getRandomColor()});
                }

                scope.$watch(attrs.myCurrentTime, function(value) {
                    format = value;
                    updateTime();
                });

                element.on('$destroy', function() {
                    $interval.cancel(timeoutId);
                });

                element.on('click', function(){
                    alert('Date format is changing to yyyy/MM/dd hh');
                    scope.format = "yyyy/MM/dd hh " + getRandomColor();
                });

                // start the UI update process; save the timeoutId for canceling
                timeoutId = $interval(function() {
                    updateTime(); // update DOM
                }, 1000);
            }

            return {
                link: link
            };
        }]);
        </script>
    </div>

2. 在线查看运行效果

http://jimuyouyou.github.io/angular-bootstrap-rest-seed/examples/angular/6-custom-directive.html

3. 项目地址

github: https://github.com/jimuyouyou/angular-bootstrap-rest-seed