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angular.js - A very simple entry-level demo of angularjs, but an error was reported.

PHP中文網(wǎng) 2017-05-15 16:56:52

587

I am new to angularjs and I am reading a book called "angularjs authoritative tutorial". There is a demo in the second chapter, as follows.

Angular version 1.2.29 is used here. If it is changed to 1.3.1, an error will be reported.

Excuse me, how did this happen? How should I debug this error?

<!doctype html> 
<html ng-app> 
<head> 
    <meta charset="utf-8"> 
    <title>Simple App</title> 
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.29/angular.min.js"></script>
</head>
<body>
    <p ng-controller="MyController">
        <h1>Hello {{clock}}</h1>
    </p>
    
    <script type="text/javascript">
        function MyController($scope, $timeout) {
            $scope.clock = new Date();
            var updateClock = function() {
              $scope.clock = new Date();
            };
            setInterval(function() {
              $scope.$apply(updateClock);
            }, 1000);
            updateClock();
      };
    </script>
</body>
</html>

PHP中文網(wǎng)

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reply all(2)

迷茫2017-05-15 16:58:52 2 floor

After version 1.3, controllers are no longer found on the window object $controller will no longer look for controllers on window.

https://github.com/angular/angular.js/blob/master/CHANGELOG.md#breaking-changes-31

<!DOCTYPE html>
<html ng-app="app">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
 <p ng-controller="MyController">
        <h1>Hello {{clock}}</h1>
    </p>
    
    <script type="text/javascript">
     (function(){
        angular.module("app", []).controller("MyController", MyController);
      
         
        MyController.$inject = ['$scope', '$timeout'];
       
        function MyController($scope, $timeout) {
            $scope.clock = new Date();
            var updateClock = function() {
              $scope.clock = new Date();
            };
            setInterval(function() {
              $scope.$apply(updateClock);
            }, 1000);
            updateClock();
       }
     })();
    </script>
</body>
</html>

The JS Bin
http://jsbin.com/vekixa/edit?html,console,output

If you cannot circumvent the wall, please change the CDN inside the wall

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曾經(jīng)蠟筆沒有小新2017-05-15 16:58:52 1 floor

It is recommended that the poster follow up to version 1.4 (version is really important)

<!doctype html> 
<html ng-app> 
<head> 
    <meta charset="utf-8"> 
    <title>Simple App</title> 
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.7/angular.min.js"></script>
</head>
<body>
    <p ng-controller="MyController">
        <h1>Hello {{clock}}</h1>
    </p>
    
    <script type="text/javascript">
        function MyController($scope, $timeout) {
            $scope.clock = new Date();
            var updateClock = function() {
              $scope.clock = new Date();
            };
            setInterval(function() {
              updateClock();
            }, 1000);
      };
    </script>
</body>
</html>

Just like this. . Of course you can also write

<!doctype html> 
<html ng-app> 
<head> 
    <meta charset="utf-8"> 
    <title>Simple App</title> 
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.7/angular.min.js"></script>
</head>
<body>
    <p ng-controller="MyController">
        <h1>Hello {{updateClock()}}</h1>
    </p>
    
    <script type="text/javascript">
        function MyController($scope, $timeout) {
            $scope.updateClock = function() {
             return new Date();
            };
            setInterval(function() {
              updateClock();
            }, 1000);
      };
    </script>
</body>
</html>

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