angular第五天

1、$filter
2、自定义过滤器
<!-- index.html -->
<!DOCTYPE html>
<html ng-app="myApp">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <script src="angular.js"></script>
</head>
<body>
    <div ng-controller="firstController">
        <p>{{ name }}</p>
        <p>{{ num }}</p>
    </div>
</body>
<script type="text/javascript">
    var app = angular.module("myApp", []);
    app.controller('firstController', ['$scope','$filter', function($scope, $filter){
   
        $scope.num = 344342342357.32342565;
        $scope.name = $filter("firstUpper")("hello");
    }]);

    //自定义过滤器的写法是返回一个函数
    app.filter("firstUpper",function(){
        //这里的参数就是使用过滤器的时候传入的参数
        return function(str,num,nu2){
            // console.log(str);
            // console.log(num);
            // console.log(nu2);
            return str.charAt(0).toUpperCase()+str.substring(1);
        }
    })
</script>
</html>