欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识！
您现在的位置是： 首页  >  IT编程

angularJS 中$attrs方法使用指南

程序员文章站 2022-03-31 23:47:12
这里给大家分享的是一个angularjs 中$attrs方法的使用示例： 复制代码 代码如下: ...

这里给大家分享的是一个angularjs 中$attrs方法的使用示例：

复制代码 代码如下:

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>
            无标题文档
        </title>
        <script src="">
        </script>
        <script src="">
        </script>
    </head>
    <body ng-app="demo">
        <div a>
            a_directive
        </div>
        <div ng-controller="testctrl">
            <h1 t>
                原始内容
            </h1>
            <h2 t2>
                原始内容
            </h2>
            <h3 t3="hiphop" title2="{{name}}">
                原始内容
            </h3>
            <div compile></div>
            <div>
                <test a="{{ a }}" b c="xxx"></test>
                <button ng-click="a=a+1">
                    修改
                </button>
            </div>
            <te a="1" ys-a="123" ng-click="show(1)">这里</te>
        </div>
        <script>
            var app = angular.module('demo', [], angular.noop);
            app.controller("testctrl",
            function($scope) {
                $scope.name = "qihao";
            });
            app.directive("t",
            function() {
                return {
                    controller : function($scope){$scope.name = "qq"},
                    template : "<div>test:implementtoparent{{name}}</div>",
                    replace : true,
                    scope : true     //作用域是继承的,默认就是继承的
                }
            });
            app.directive("t2",
            function() {
                return {
                    controller : function($scope){$scope.name = "nono"},
                    template : "<div>test:implementtoparent{{name}}</div>",
                    replace : true,
                    restrict : "ae"
                }
            });
            app.directive("t3",
            function() {
                return {
                    template : "<div>test:implementtoparent_titleis:{{title}}<br>title2is:{{title2}}</div>",
                    replace : true,
                    restrict : "ae",
                    scope : {
                        title : "@t3",
                        title2 : "@title2"
                    }
                }
            });
            app.directive('a',
            function() {
                var func = function() {
                    console.log('compile');
                    return function() {
                        console.log('link');
                    }
                }
                var controller = function($scope, $element, $attrs, $transclude) {
                    //$transclude ：是指令标签的复制体
                    console.log('controller');
                    console.log($scope);
                    console.log($transclude);
                    //$transclude接受两个参数，你可以对这个克隆的元素进行操作，
                    var node = $transclude(function(clone_element, scope) {
                        $element.append(clone_element);
                        $element.append("<span>spantag___</span>");
                        console.log(clone_element);
                        console.log('--');
                        console.log(scope);
                    });
                    console.log(node);
                }
                return {
                    compile: func,
                    template: "<h1 ng-transclude></h1>",
                    controller: controller,
                    transclude: true,
                    restrict: 'ae'
                }
            });
            app.directive('compile',function() {
                var func = function() {
                    console.log('a compile');
                    return {
                        pre: function() {
                            console.log('a link pre')
                        },
                        post: function() {
                            console.log('a link post')
                        },
                    }
                }
                return {
                    restrict : "ae",
                    compile : func
                }
            })
              app.directive('test', function(){
                var func = function($element, $attrs){
                  console.log($attrs);
                  $attrs.$observe('a', function(new_v){
                    console.log(new_v);
                  });
                }
                return {compile: func,
                        restrict: 'e'}
              });
              app.controller('testctrl', function($scope){
                $scope.a = 123;
              });
              app.directive('te', function(){
                var func = function($scope,$element, $attrs,$ctrl){
                    console.log($ctrl)
                    //$attrs.$set. 给这个属性设置b，值为ooo，就是这样
                  $attrs.$set('b', 'ooo');
                  $attrs.$set('a-b', '11');
                  //这个还有点不懂啊 //第二个参数值
                  $attrs.$set('c-d', '11', true, 'c_d');
                  console.log($attrs);
                }
                return {
                        compile: function(){
                            return func
                        },
                        restrict: 'e'
                    }
              });
              app.controller('testctrl', function($scope){
                $scope.show = function(v){console.log(v);}
              });
        </script>
    </body>
</html>

本文内容就到这里了，希望大家能对angularjs 中$attrs的使用有了新的认识，希望大家能够喜欢本文。

上一篇： 闪存内存价格齐跌 又一厂商盈利创8年新低

下一篇： 魅族16s幻影蓝图赏：蓝绿双色渐变之美

推荐阅读