Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
376 views
in Technique[技术] by (71.8m points)

javascript - angular2js: Uncaught Reference Error: System is not defined

I am new to angular so please help. I am getting an error while trying to run a simple code with angular with angular ng-controller tag where I am displaying a variable in html being defined in a javascript file as:

var MainController = function($scope){
$scope.message = "harsh";

and displaying in html as in this:html page

The error on chrome console is as:

Uncaught ReferenceError: System is not defined(anonymous function) @ angular2.js:3098

which points to some function in angular2js:

System.register("angular2/src/core/facade/lang", [], true, function(require, exports, module) {

I don't understand the problem. Is it related to the angular2.js which I included from angularjs.org?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Try including the System JS file in your HTML.

<script src="https://jspm.io/[email protected]"></script>

Check this Github repo for any help: https://github.com/kensplanet/angularjs2-hello-world/blob/master/index.html

Angular2 way of doing it

Plunker link: http://plnkr.co/edit/36PZLTZ58bXmD4me0cpS?p=preview

index.html

<html>
    <head>
        <title>AngularJS2 Hello World Demo</title>

        <script src="https://github.jspm.io/jmcriffey/[email protected]/traceur-runtime.js"></script>
        <script src="https://jspm.io/[email protected]"></script>
        <script src="https://code.angularjs.org/2.0.0-alpha.28/angular2.dev.js"></script>
    </head>

    <body>
        <harsh></harsh>

    <script>
        System.import('harsh');
    </script>
        </body>
</html>

harsh.js

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
    switch (arguments.length) {
        case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
        case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
        case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
    }
};
var angular2_1 = require('angular2/angular2');
var angularjs2Component = (function () {
    function angularjs2Component() {
        this.name = "Harsh";
    }
    angularjs2Component = __decorate([
        angular2_1.Component({
            selector: 'harsh'
        }),
        angular2_1.View({
            template: '<h1>Hello {{name}}<h1>'
        })
    ], angularjs2Component);
    return angularjs2Component;
})();
angular2_1.bootstrap(angularjs2Component);

Output:

Hello Harsh



与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...