{"id":39572,"date":"2023-08-03T04:31:20","date_gmt":"2023-06-30T12:56:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/angular-2%e7%9a%84%e8%af%ad%e6%b3%95\/"},"modified":"2024-04-30T16:42:56","modified_gmt":"2024-04-30T08:42:56","slug":"angular-2%e7%9a%84%e8%af%ad%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/angular-2%e7%9a%84%e8%af%ad%e6%b3%95\/","title":{"rendered":"Angular 2\u7684\u8bed\u6cd5"},"content":{"rendered":"

\u5927\u5bb6\u597d\uff0c\u6211\u662f\u62c9\u79d1\u3002\u5728\u6211\u524d\u51e0\u5929\u4e3b\u6301\u7684\u6d3b\u52a8\u4e2d\u542c\u5230\u6709\u4eba\u8bf4”\u4e0d\u77e5\u9053Angular 2\u7684*\u7b26\u53f7\u6709\u4ec0\u4e48\u610f\u4e49\uff0c\u611f\u89c9\u5f88\u5947\u602a”\uff0c\u6211\u89c9\u5f97\u610f\u5916\u5730\u5f88\u591a\u4eba\u4e0d\u77e5\u9053\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u5199\u4e0b\u6765\uff0c\u5e0c\u671b\u80fd\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u5730\u7406\u89e3Angular 2\u3002<\/p>\n

\u53e6\u5916\uff0c\u672c\u6587\u662f\u57fa\u4e8eAngular 2 Beta.14\u7684\u7248\u672c\u3002<\/p>\n

Angular 2 \u4e2d\u7684\u6307\u4ee4<\/h2>\n

Angular 2\u4e3b\u8981\u4ee5\u7ec4\u4ef6\u4e3a\u5bfc\u5411\uff0c\u5e94\u7528\u7a0b\u5e8f\u662f\u7531\u7ec4\u4ef6\u7ec4\u88c5\u800c\u6210\u3002\u4f46\u662f\uff0c\u4e0eAngular 1\u76f8\u540c\uff0c\u6211\u4eec\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528\u6307\u4ee4\u6765\u4fee\u9970HTML\u5143\u7d20\u548c\u7ec4\u4ef6\u3002<\/p>\n

\u4ee5\u4e0b\u662fmyDirective\u6307\u4ee4\uff0c\u5b83\u53ef\u4ee5\u66f4\u6539\u5e94\u7528\u4e8e\u5143\u7d20\u7684\u6837\u5f0f\uff0c\u5e76\u5c06\u989c\u8272\u8bbe\u4e3a\u7ea2\u8272\u3002<\/p>\n

import<\/span> {<\/span>Component<\/span>,<\/span> Directive<\/span>,<\/span> ElementRef<\/span>,<\/span> Renderer<\/span>}<\/span> from<\/span> '<\/span>angular2\/core<\/span>'<\/span>\r\n\r\n@<\/span>Directive<\/span>({<\/span>\r\n  selector<\/span>:<\/span> \"<\/span>[myDirective]<\/span>\"<\/span>\r\n})<\/span>\r\nclass<\/span> MyDirective<\/span> {<\/span>\r\n\r\n  constructor<\/span>(<\/span>\r\n    private<\/span> el<\/span>:<\/span> ElementRef<\/span>,<\/span> \r\n    private<\/span> renderer<\/span>:<\/span> Renderer<\/span>\r\n  )<\/span> {}<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>renderer<\/span>.<\/span>setElementStyle<\/span>(<\/span>this<\/span>.<\/span>el<\/span>.<\/span>nativeElement<\/span>,<\/span> \"<\/span>color<\/span>\"<\/span>,<\/span> \"<\/span>red<\/span>\"<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>my-app<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <div myDirective>Hello {{name}}<\/div>\r\n  `<\/span>,<\/span>\r\n  directives<\/span>:<\/span> [<\/span>MyDirective<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> App<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>name<\/span> =<\/span> '<\/span>Angular2<\/span>'<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6307\u4ee4\u548c\u7ec4\u4ef6\u4e00\u6837\uff0c\u4e5f\u6709\u751f\u547d\u5468\u671f\u65b9\u6cd5\u94a9\u5b50\u3002\u5728\u6784\u9020\u51fd\u6570\u7684\u4f9d\u8d56\u6ce8\u5165\u4e2d\u83b7\u53d6\u7684\u5b9e\u4f8b\u5c06\u5728ngOnInit\u4e2d\u4f7f\u7528\u3002<\/p>\n
\u6b64\u5916\uff0c\u6307\u4ee4\u7684\u9009\u62e9\u5668\u5143\u6570\u636e\u53ef\u4ee5\u662fmyDirective\u5143\u7d20\uff0c\u4e5f\u53ef\u4ee5\u662f[myDirective]\u5c5e\u6027\uff0c\u5f53\u7136\u8fd8\u53ef\u4ee5\u662f.myDirective\u7c7b\u3002\uff08\u867d\u7136\u5e76\u4e0d\u5e38\u77e5\u4e14\u5e76\u4e0d\u63a8\u8350\uff0c\u4f46\u5b9e\u9645\u4e0a\u7ec4\u4ef6\u7684\u9009\u62e9\u5668\u4e5f\u4e0d\u4e00\u5b9a\u8981\u662f\u5143\u7d20\u3002\uff09<\/p>\n
\u8bed\u6cd5\uff1a\u6a21\u677f\u5316<\/h2>\n
\u5728\u6982\u8ff0\u4e86\u6307\u4ee4\u7684\u57fa\u672c\u5185\u5bb9\u4e4b\u540e\uff0c\u6211\u4eec\u5c06\u89e3\u91ca\u7b26\u53f7\u7684\u4f7f\u7528\u3002\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u786e\u8ba4\u4e00\u4e0b\u4e0a\u9762\u63d0\u5230\u7684myDirective\u6307\u4ee4\u5b9e\u9645\u4e0a\u751f\u6210\u4e86\u600e\u6837\u7684DOM\u7ed3\u6784\u3002\u901a\u8fc7\u67e5\u770bChrome\u5f00\u53d1\u8005\u5de5\u5177\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5982\u4e0b\u7684\u914d\u7f6e\uff1a\u5728my-app\u5143\u7d20\u4e2d\uff0c\u6a21\u677f\u88ab\u5c55\u5f00\uff0c\u5e76\u4e14\u5728\u5176\u4e2d\u5177\u6709mydirective\u5c5e\u6027\u7684div\u5143\u7d20\u4e2d\u5e94\u7528\u4e86\u6837\u5f0f\u3002<\/p>\n
\"Kobito.VDG9G4.png\"<\/div>\n
\u8ba9\u6211\u4eec\u7528”*”\u7b26\u53f7\u6765\u8fd0\u884cmyDirective\u6307\u4ee4\uff0c\u770b\u770b\u4f1a\u53d1\u751f\u4ec0\u4e48\uff0c\u8fd9\u662f\u76f4\u89c9\u7684\uff0cDOM\u7ed3\u6784\u6ca1\u6709\u4efb\u4f55\u5f02\u6837\u3002<\/p>\n
@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>my-app<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <div *myDirective>Hello {{name}}<\/div>\r\n  `<\/span>,<\/span>\r\n  directives<\/span>:<\/span> [<\/span>MyDirective<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> App<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>name<\/span> =<\/span> '<\/span>Angular2<\/span>'<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"Kobito.vS1Z2P.png\"<\/div>\n
\u771f\u4e0d\u53ef\u601d\u8bae\uff0cdiv\u5143\u7d20\u6d88\u5931\u4e4b\u524d\uff0c\u7559\u4e0b\u4e86\u4e00\u4e2a\u795e\u79d8\u7684\u6ce8\u91ca\uff01<\/p>\n
\u5c06\u8981\u7d20\u8f6c\u53d8\u4e3a\u201c\u6a21\u677f\u5316\u201d\u3002<\/h3>\n
\u5f53\u6211\u7ed9myDirective\u6dfb\u52a0\u524d\u7f00\u65f6\uff0cdiv\u5143\u7d20\u6d88\u5931\u4e86\u3002\u5b83\u5e76\u4e0d\u4ec5\u4ec5\u662f\u6d88\u5931\u4e86\uff0c\u800c\u662f\u88ab\u201c\u6a21\u677f\u5316\u201d\u4e86\u3002\u6240\u8c13\u201c\u6a21\u677f\u5316\u201d\uff0c\u5c31\u662f\u5c06\u5143\u7d20\u4fdd\u5b58\u4e3a\u4e00\u4e2a\u6a21\u677f\uff0c\u4ee5\u4fbf\u968f\u65f6\u8fdb\u884c\u590d\u5236\u7684\u673a\u5236\u3002<\/p>\n
\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0bngIf\u6307\u4ee4\u7684\u6e90\u4ee3\u7801\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u7b80\u5355\u6613\u61c2\u7684\u4f8b\u5b50\u3002<\/p>\n
@<\/span>Directive<\/span>({<\/span>selector<\/span>:<\/span> '<\/span>[ngIf]<\/span>'<\/span>,<\/span> inputs<\/span>:<\/span> [<\/span>'<\/span>ngIf<\/span>'<\/span>]})<\/span>\r\nexport<\/span> class<\/span> NgIf<\/span> {<\/span>\r\n  private<\/span> _prevCondition<\/span>:<\/span> boolean<\/span> =<\/span> null<\/span>;<\/span>\r\n\r\n  constructor<\/span>(<\/span>private<\/span> _viewContainer<\/span>:<\/span> ViewContainerRef<\/span>,<\/span> private<\/span> _templateRef<\/span>:<\/span> TemplateRef<\/span>)<\/span> {}<\/span>\r\n\r\n  set<\/span> ngIf<\/span>(<\/span>newCondition<\/span>:<\/span> any<\/span> \/* boolean *\/<\/span>)<\/span> {<\/span>\r\n    if<\/span> (<\/span>newCondition<\/span> &&<\/span> (<\/span>isBlank<\/span>(<\/span>this<\/span>.<\/span>_prevCondition<\/span>)<\/span> ||<\/span> !<\/span>this<\/span>.<\/span>_prevCondition<\/span>))<\/span> {<\/span>\r\n      this<\/span>.<\/span>_prevCondition<\/span> =<\/span> true<\/span>;<\/span>\r\n      this<\/span>.<\/span>_viewContainer<\/span>.<\/span>createEmbeddedView<\/span>(<\/span>this<\/span>.<\/span>_templateRef<\/span>);<\/span>\r\n    }<\/span> else<\/span> if<\/span> (<\/span>!<\/span>newCondition<\/span> &&<\/span> (<\/span>isBlank<\/span>(<\/span>this<\/span>.<\/span>_prevCondition<\/span>)<\/span> ||<\/span> this<\/span>.<\/span>_prevCondition<\/span>))<\/span> {<\/span>\r\n      this<\/span>.<\/span>_prevCondition<\/span> =<\/span> false<\/span>;<\/span>\r\n      this<\/span>.<\/span>_viewContainer<\/span>.<\/span>clear<\/span>();<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
angular \/ ng_if.ts\u5728angular \/ angular\u7684\u4e3b\u7248\u672c\u4e2d<\/p>\n
ngIf\u6307\u4ee4\u6839\u636e\u6240\u7ed9\u7684\u503cnewCondition\u751f\u6210\u6216\u5220\u9664\u5143\u7d20\u3002\u4e3a\u4e86\u8fdb\u884c\u8fd9\u79cd”\u751f\u6210”\uff0c\u9700\u8981\u6a21\u677f\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c*ngIf\u6307\u4ee4\u5c06\u9644\u52a0\u5230\u7684\u5143\u7d20\u4fdd\u6301\u4e3a\u6a21\u677f\uff0c\u5e76\u57fa\u4e8e\u8be5\u6a21\u677f\u590d\u5236\u5e76\u663e\u793a\u65b0\u5143\u7d20\u3002
\n*ngFor\u4e5f\u4ee5\u76f8\u540c\u7684\u673a\u5236\u5de5\u4f5c\u3002\u53ea\u662fngFor\u6307\u4ee4\u751f\u6210\u591a\u4e2a\u5143\u7d20\uff0c\u672c\u8d28\u4e0a\u4e0engIf\u6ca1\u6709\u4ec0\u4e48\u4e0d\u540c\u3002<\/p>\n
\u5f53\u9700\u8981\u5c06\u6307\u5b9a\u7684\u6307\u4ee4\u5e94\u7528\u5230\u5143\u7d20\u672c\u8eab\u4f5c\u4e3a\u6a21\u677f\u65f6\uff0c\u5c31\u9700\u8981\u4f7f\u7528*\u8bed\u6cd5\u5bf9\u5176\u8fdb\u884c\u6a21\u677f\u5316\u3002<\/p>\n
ViewContainerRef\u548cTemplateRef<\/h3>\n
\u5148\u524d\u5728\u7ed9myDirective\u5143\u7d20\u6dfb\u52a0*\u524d\u7f00\u65f6\uff0c\u5143\u7d20\u6d88\u5931\u7684\u539f\u56e0\u662f\u53ea\u5bf9\u6a21\u677f\u8fdb\u884c\u4e86\u6807\u51c6\u5316\uff0c\u4f46\u6ca1\u6709\u6839\u636e\u8be5\u6a21\u677f\u521b\u5efa\u5143\u7d20\u3002\u8ba9\u6211\u4eec\u5c1d\u8bd5\u5728myDirective\u4e2d\u4e5f\u4f7f\u7528\u6a21\u677f\u5427\uff01<\/p>\n
\u6a21\u677f\u5316\u7684\u5143\u7d20\u53ef\u4ee5\u4f5c\u4e3aTemplateRef\u7c7b\u7684\u5b9e\u4f8b\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3002TemplateRef\u53ea\u6709\u5e26\u6709*\u524d\u7f00\u624d\u80fd\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\uff0c\u6240\u4ee5\u57fa\u672c\u4e0a\uff0c\u6307\u4ee4\u8981\u4e48\u4f7f\u7528TemplateRef\uff0c\u8981\u4e48\u4e0d\u4f7f\u7528\uff0c\u5fc5\u987b\u505a\u51fa\u51b3\u5b9a\u3002\uff08\u203b\u4e5f\u53ef\u4ee5\u4f7f\u7528\u53ef\u9009\u7684\u4f9d\u8d56\u6ce8\u5165\u8fdb\u884c\u5207\u6362\uff09<\/p>\n
\u7531\u4e8e\u4ec5\u6709\u6a21\u677f\u4e0d\u80fd\u751f\u6210\u5143\u7d20\uff0c\u56e0\u6b64\u8fd8\u9700\u8981\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u4ee5\u6839\u636e\u6a21\u677f\u521b\u5efa\u5143\u7d20\u3002\u8fd9\u5c31\u662f ViewContainerRef \u7684\u4f5c\u7528\u3002ViewContainerRef \u662f\u4e00\u4e2a\u7528\u4e8e\u5c06\u5e26\u6709\u6307\u4ee4\u7684\u5143\u7d20\u89c6\u4e3a\u5bb9\u5668\u7684\u7c7b\u3002\u901a\u8fc7\u4f7f\u7528 ViewContainerRef \u548c TemplateRef\uff0c\u53ef\u4ee5\u5c06\u7531\u6a21\u677f\u751f\u6210\u7684\u5143\u7d20\u653e\u7f6e\u5728\u5bb9\u5668\u4e2d\u3002<\/p>\n
\u4f7f\u7528myDirective\u6307\u4ee4\u7684\u4e0b\u4e00\u4e2a\u793a\u4f8b\u662f\u4e3a\u4e86\u751f\u6210\u4e24\u4e2a\u76f8\u540c\u7684\u5143\u7d20\u3002<\/p>\n
import<\/span> {<\/span>Component<\/span>,<\/span> Directive<\/span>,<\/span> ViewContainerRef<\/span>,<\/span> TemplateRef<\/span>}<\/span> from<\/span> '<\/span>angular2\/core<\/span>'<\/span>\r\n\r\n@<\/span>Directive<\/span>({<\/span>\r\n  selector<\/span>:<\/span> \"<\/span>[myDirective]<\/span>\"<\/span>\r\n})<\/span>\r\nclass<\/span> MyDirective<\/span> {<\/span>\r\n\r\n  constructor<\/span>(<\/span>\r\n    private<\/span> _template<\/span>:<\/span> TemplateRef<\/span>,<\/span>\r\n    private<\/span> _viewContainer<\/span>:<\/span> ViewContainerRef<\/span>\r\n  )<\/span> {}<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    for<\/span>(<\/span>let<\/span> i<\/span> =<\/span> 0<\/span>;<\/span> i<\/span> <<\/span> 2<\/span>;<\/span> i<\/span>++<\/span>)<\/span> {<\/span>\r\n      this<\/span>.<\/span>_viewContainer<\/span>.<\/span>createEmbeddedView<\/span>(<\/span>this<\/span>.<\/span>_template<\/span>);<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>my-app<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <div *myDirective>Hello {{name}}<\/div>\r\n  `<\/span>,<\/span>\r\n  directives<\/span>:<\/span> [<\/span>MyDirective<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> App<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>name<\/span> =<\/span> '<\/span>Angular2<\/span>'<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f53\u60a8\u901a\u8fc7ViewContainerRef\u7c7b\u7684createEmbeddedView\u65b9\u6cd5\u4f20\u9012TemplateRef\u5b9e\u4f8b\u65f6\uff0c\u5b83\u4f1a\u4f7f\u7528\u8be5\u6a21\u677f\u751f\u6210\u5143\u7d20\u5e76\u5c06\u5176\u5d4c\u5165\u5230\u5bb9\u5668\u4e2d\u3002\u751f\u6210\u7684DOM\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u5c06\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
\"Kobito.Fi9CZD.png\"<\/div>\n
\u5982\u60a8\u6240\u89c1\uff0c\u4e0emy-app\u7684\u6a21\u677fHTML\u5b8c\u5168\u4e0d\u540c\u7684\u7ed3\u6784\u3002\u4f7f\u7528\u6a21\u677f\u5316\u6307\u4ee4\u53ef\u4ee5\u8f7b\u6613\u5730\u7834\u574f\u7ec4\u4ef6\u5b9a\u4e49\u7684DOM\u7ed3\u6784\u3002\u56e0\u6b64\uff0c\u9664\u975e\u660e\u786e\u5730\u4f7f\u7528*\u8bed\u6cd5\uff0c\u5426\u5219\u5c06\u65e0\u6cd5\u83b7\u53d6TemplateRef\u3002<\/p>\n
\u4f7f\u7528\u6a21\u677f\u7684\u65b9\u6cd5<\/h3>\n
\u987a\u4fbf\u8bf4\u4e00\u4e0b\uff0c\u53ef\u4ee5\u901a\u8fc7template\u5143\u7d20\u6765\u66ff\u6362\u8bed\u6cd5\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u901a\u8fc7template\u5143\u7d20\u53ef\u4ee5\u5b9e\u73b0\u6a21\u677f\u5316\u3002<\/p>\n
\u4f7f\u7528\u5148\u524d\u7684*myDirective\u6307\u793a\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528template\u8981\u7d20\u6765\u5199\u6210\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>my-app<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <template myDirective>\r\n      <div>Hello {{name}}<\/div>\r\n    <\/template>\r\n  `<\/span>,<\/span>\r\n  directives<\/span>:<\/span> [<\/span>MyDirective<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> App<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>name<\/span> =<\/span> '<\/span>Angular2<\/span>'<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728template\u8981\u7d20\u4e2d\u6dfb\u52a0\u6ca1\u6709\u524d\u7f00\u7684myDirective\uff0c\u5e76\u5728\u5176\u4e2d\u7f16\u5199\u9700\u8981\u5efa\u7acb\u6a21\u677f\u7684HTML\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e0e\u4e4b\u524d\u5b8c\u5168\u76f8\u540c\u7684\u6a21\u677f\u5316\u3002<\/p>\n
\u603b\u7ed3<\/h2>\n
Angular 2\u7684\u8bed\u6cd5\u662f\u7528\u4e8e\u5c06HTML\u5143\u7d20\u6a21\u677f\u5316\u7684\u5de5\u5177\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684\u6307\u4ee4\u5982*ngIf\u548c*ngFor\uff0c\u8fd8\u53ef\u4ee5\u81ea\u5df1\u4f7f\u7528\u5b83\u6765\u5b9e\u73b0\u4fbf\u5229\u7684\u529f\u80fd\u3002\u7136\u800c\uff0c\u8981\u719f\u7ec3\u638c\u63e1\u5b83\u5e76\u4e0d\u5bb9\u6613\uff0c\u56e0\u6b64\u5efa\u8bae\u5728\u638c\u63e1\u4e86\u901a\u8fc7\u7ec4\u4ef6\u6784\u5efa\u89c6\u56fe\u7684\u57fa\u7840\u4e4b\u540e\u518d\u5b66\u4e60\u8fd9\u4e9b\u4e2d\u7ea7\u6280\u5de7\u3002<\/p>\n
\u8fd9\u6b21\u7684\u793a\u4f8b\u4ee3\u7801\u53ef\u4ee5\u5728 Plunker \u4e0a\u627e\u5230\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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