[英]Uncaught ReferenceError: System is not defined angular 4
我在我的項目中安裝了angular2-recaptcha( https://github.com/xmaestro/angular2-recaptcha )。
我添加了systemjs.config.js :
System.config({
map: {
'angular2-recaptcha': 'node_modules/angular2-recaptcha'
},
packages: {
app: {
format: 'register',
defaultExtension: 'js'
},
'angular2-recaptcha': {defaultExtension: 'js', main:'index'}
}
});
index.html :
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){
console.error(err);
});
</script>
但我在瀏覽器控制台中收到此錯誤:
Uncaught ReferenceError: System is not defined
at localhost/:29
compiler.es5.js:15996 Uncaught Error: Unexpected module 'ReCaptchaModule' declared by the module 'AppModule'. Please add a @Pipe/@Directive/@Component annotation.
at syntaxError (compiler.es5.js:1690)
at compiler.es5.js:15430
at Array.forEach (<anonymous>)
at CompileMetadataResolver.webpackJsonp.../../../compiler/@angular/compiler.es5.js.CompileMetadataResolver.getNgModuleMetadata (compiler.es5.js:15412)
at JitCompiler.webpackJsonp.../../../compiler/@angular/compiler.es5.js.JitCompiler._loadModules (compiler.es5.js:26795)
at JitCompiler.webpackJsonp.../../../compiler/@angular/compiler.es5.js.JitCompiler._compileModuleAndComponents (compiler.es5.js:26768)
at JitCompiler.webpackJsonp.../../../compiler/@angular/compiler.es5.js.JitCompiler.compileModuleAsync (compiler.es5.js:26697)
at PlatformRef_.webpackJsonp.../../../core/@angular/core.es5.js.PlatformRef_._bootstrapModuleWithZone (core.es5.js:4536)
at PlatformRef_.webpackJsonp.../../../core/@angular/core.es5.js.PlatformRef_.bootstrapModule (core.es5.js:4522)
at Object.../../../../../src/main.ts (main.ts:11)
請幫我! 我的錯誤在哪里?
您需要加載SystemJS
庫,而不僅僅是配置:
<script src="systemjs/dist/system.js"></script> <---------------------
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
此外,不推薦使用System
使用,使用SystemJS
,其中System
是全局對象,例如,而不是System.import
使用SystemJS.import
。
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