{"id":38851,"date":"2023-09-28T00:51:17","date_gmt":"2024-02-20T01:05:47","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e5%ae%9e%e7%8e%b0%e4%b8%80%e4%b8%aa%e7%94%9f%e5%ad%98%e5%9e%8btypescript%e7%9a%84%e7%8c%ab%e5%9b%be%e5%83%8f%e7%94%9f%e6%88%90%e5%99%a8%e3%80%82\/"},"modified":"2024-05-04T01:53:15","modified_gmt":"2024-05-03T17:53:15","slug":"%e3%80%90angular%e3%80%91%e5%ae%9e%e7%8e%b0%e4%b8%80%e4%b8%aa%e7%94%9f%e5%ad%98%e5%9e%8btypescript%e7%9a%84%e7%8c%ab%e5%9b%be%e5%83%8f%e7%94%9f%e6%88%90%e5%99%a8%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e5%ae%9e%e7%8e%b0%e4%b8%80%e4%b8%aa%e7%94%9f%e5%ad%98%e5%9e%8btypescript%e7%9a%84%e7%8c%ab%e5%9b%be%e5%83%8f%e7%94%9f%e6%88%90%e5%99%a8%e3%80%82\/","title":{"rendered":"\u3010Angular\u3011\u5b9e\u73b0\u4e00\u4e2a\u751f\u5b58\u578bTypeScript\u7684\u732b\u56fe\u50cf\u751f\u6210\u5668"},"content":{"rendered":"

Angular CLI\u7248\u672c\uff1a16.1.5<\/p>\n

Angular\uff1a16.1.6<\/p>\n

\u524d\u56de\u7684\u5ef6\u7eed\u3002
\n\u5728\u5de5\u4f5c\u4e2d\uff0c\u6211\u7b2c\u4e00\u6b21\u4f7f\u7528Angular\u8fdb\u884c\u524d\u7aef\u5f00\u53d1\u3002\u5728\u5b8c\u6210Angular\u7684\u6559\u7a0b\u540e\uff0c\u8003\u8651\u5230\u6211\u4e4b\u524d\u6ca1\u6709\u63a5\u89e6\u8fc7TypeScript\uff0c\u4e3a\u4e86\u517c\u987e\u5b66\u4e60\uff0c\u6211\u6545\u610f\u9009\u62e9\u4f7f\u7528Angular\u6765\u8fdb\u884cSurvival TypeScript\u3002<\/p>\n

\"image.png\"<\/div>\n
import<\/span> {<\/span> NgModule<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> BrowserModule<\/span> }<\/span> from<\/span> '<\/span>@angular\/platform-browser<\/span>'<\/span>;<\/span>\r\n\r\nimport<\/span> {<\/span> AppRoutingModule<\/span> }<\/span> from<\/span> '<\/span>.\/app-routing.module<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> AppComponent<\/span> }<\/span> from<\/span> '<\/span>.\/app.component<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> CatImgComponent<\/span> }<\/span> from<\/span> '<\/span>.\/component\/cat-img\/cat-img.component<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> HttpClientModule<\/span> }<\/span> from<\/span> \"<\/span>@angular\/common\/http<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> CatService<\/span> }<\/span> from<\/span> '<\/span>.\/service\/catService<\/span>'<\/span>;<\/span>\r\n\r\n@<\/span>NgModule<\/span>({<\/span>\r\n  declarations<\/span>:<\/span> [<\/span>\r\n    AppComponent<\/span>,<\/span>\r\n    CatImgComponent<\/span>\r\n  ],<\/span>\r\n  imports<\/span>:<\/span> [<\/span>\r\n    BrowserModule<\/span>,<\/span>\r\n    AppRoutingModule<\/span>,<\/span>\r\n    HttpClientModule<\/span>\r\n  ],<\/span>\r\n  providers<\/span>:<\/span> [<\/span>CatService<\/span>],<\/span>\r\n  bootstrap<\/span>:<\/span> [<\/span>AppComponent<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> AppModule<\/span> {<\/span> }<\/span>\r\n\r\n<\/code><\/pre>\n
<<\/span>app<\/span>-<\/span>cat<\/span>-<\/span>img<\/span>><<\/span>\/app-cat-img<\/span>>\r\n<\/span><\/code><\/pre>\n
import<\/span> {<\/span> Injectable<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> HttpClient<\/span> }<\/span> from<\/span> \"<\/span>@angular\/common\/http<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> catchError<\/span> }<\/span> from<\/span> \"<\/span>rxjs\/operators<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> throwError<\/span>,<\/span> Observable<\/span> }<\/span> from<\/span> \"<\/span>rxjs<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> Catmodel<\/span> }<\/span> from<\/span> \"<\/span>..\/model\/catModel<\/span>\"<\/span>;<\/span>\r\n\r\n@<\/span>Injectable<\/span>({<\/span>\r\n    providedIn<\/span>:<\/span> '<\/span>root<\/span>'<\/span>\r\n})<\/span>\r\n\r\nexport<\/span> class<\/span> CatService<\/span>{<\/span>\r\n    constructor<\/span>(<\/span>private<\/span> http<\/span>:<\/span> HttpClient<\/span>)<\/span> {}<\/span>\r\n\r\n    \/\/ The Cat  API\u3092\u547c\u3073\u51fa\u3057\u732b\u753b\u50cfURL\u3092\u53d6\u5f97<\/span>\r\n    getCatImgService<\/span>():<\/span> Observable<\/span><<\/span>Catmodel<\/span>><\/span>{<\/span>\r\n            const<\/span> apiUrl<\/span> =<\/span> '<\/span>https:\/\/api.thecatapi.com\/v1\/images\/search<\/span>'<\/span>;<\/span>\r\n            return<\/span> this<\/span>.<\/span>http<\/span>.<\/span>get<\/span><<\/span>Catmodel<\/span>><\/span>(<\/span>apiUrl<\/span>).<\/span>pipe<\/span>(<\/span>\r\n                catchError<\/span>(<\/span>error<\/span> =><\/span> {<\/span>\r\n                    console<\/span>.<\/span>error<\/span>(<\/span>'<\/span>\u753b\u50cf\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/span>'<\/span>,<\/span> error<\/span>);<\/span>\r\n                return<\/span> throwError<\/span>(<\/span>'<\/span>\u753b\u50cf\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/span>'<\/span>);<\/span>\r\n                })<\/span>\r\n            );<\/span>    \r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/ The Cat API\u547c\u3073\u51fa\u3057\u6642\u306b\u8fd4\u3063\u3066\u304f\u308b\u5024\u3092\u5165\u308c\u308b\u5909\u6570\u3092\u5b9a\u7fa9<\/span>\r\n\r\nexport<\/span> class<\/span> Catmodel<\/span> {<\/span>\r\n\r\n    id<\/span>?:<\/span> string<\/span>;<\/span>\r\n    url<\/span>?:<\/span> string<\/span>;<\/span>\r\n    width<\/span>?:<\/span> number<\/span>;<\/span>\r\n    height<\/span>?:<\/span> number<\/span>;<\/span>\r\n\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
import<\/span> {<\/span> Component<\/span>,<\/span> OnInit<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> Catmodel<\/span> }<\/span> from<\/span> '<\/span>src\/app\/model\/catModel<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> HttpClient<\/span> }<\/span> from<\/span> '<\/span>@angular\/common\/http<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> CatService<\/span> }<\/span> from<\/span> '<\/span>src\/app\/service\/catService<\/span>'<\/span>;<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-cat-img<\/span>'<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> '<\/span>.\/cat-img.component.html<\/span>'<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>'<\/span>.\/cat-img.component.css<\/span>'<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> CatImgComponent<\/span> implements<\/span> OnInit<\/span>{<\/span>\r\n\r\n  catdata<\/span>?<\/span> :<\/span> Catmodel<\/span>;<\/span>\r\n  error<\/span>?:<\/span> string<\/span>;<\/span>\r\n  cat<\/span>?:<\/span> any<\/span>;<\/span>\r\n\r\n  constructor<\/span>(<\/span>private<\/span> catService<\/span>:<\/span> CatService<\/span>,<\/span> private<\/span> http<\/span>:<\/span> HttpClient<\/span>)<\/span> {<\/span> }<\/span>\r\n\r\n  \/\/ \u753b\u9762\u3092\u8868\u793a\u3057\u305f\u969b\u306bgetCatImg\u3092\u547c\u3073\u51fa\u3057\u732b\u3092\u8868\u793a\u3059\u308b<\/span>\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>getCatImg<\/span>();<\/span>\r\n  }<\/span>\r\n  \r\n  \/\/ \u66f4\u65b0\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u969b\u306b\u30ed\u30fc\u30c9\u753b\u50cf\u3092\u8868\u793a\u3057\u3001getCatImg\u3092\u547c\u3073\u51fa\u3059<\/span>\r\n  onClick<\/span>(){<\/span>\r\n    this<\/span>.<\/span>catdata<\/span> =<\/span> undefined<\/span>;<\/span>\r\n    this<\/span>.<\/span>getCatImg<\/span>();<\/span>\r\n  }<\/span>\r\n  \/\/ \u30b5\u30fc\u30d3\u30b9\u5074\u3067The Cat API\u3092\u547c\u3073\u51fa\u3057\u53d6\u5f97\u3057\u305f\u732b\u753b\u50cfURL\u3092catdata\u306b\u683c\u7d0d<\/span>\r\n  getCatImg<\/span>(){<\/span>\r\n    this<\/span>.<\/span>catService<\/span>.<\/span>getCatImgService<\/span>().<\/span>subscribe<\/span>(<\/span>\r\n      (<\/span>data<\/span>:<\/span> any<\/span>)<\/span> =><\/span> {<\/span>\r\n        this<\/span>.<\/span>catdata<\/span> =<\/span> data<\/span>[<\/span>0<\/span>];<\/span>\r\n        console<\/span>.<\/span>log<\/span>(<\/span>this<\/span>.<\/span>catdata<\/span>);<\/span>\r\n      },<\/span>\r\n      (<\/span>error<\/span>)<\/span> =><\/span> {<\/span>\r\n        this<\/span>.<\/span>error<\/span> =<\/span> '<\/span>\u753b\u50cf\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/span>'<\/span>;<\/span>\r\n      }<\/span>\r\n    );<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
<<\/span>div<\/span> class<\/span>=<\/span>\"<\/span>mainBodyBlock<\/span>\"<\/span> ><\/span>\r\n    <<\/span>p<\/span> class<\/span>=<\/span>\"<\/span>titleText<\/span>\"<\/span>><\/span>\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u732b\u306e\u753b\u50cf\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u8868\u793a<\/span><<\/span>\/p<\/span>>\r\n<\/span>    <<\/span>span<\/span> class<\/span>=<\/span>\"<\/span>Button<\/span>\"<\/span> (<\/span>click<\/span>)<\/span>=<\/span>\"<\/span>onClick()<\/span>\"<\/span>><\/span>\u66f4\u65b0<\/span><<\/span>\/span<\/span>>\r\n<\/span>        <<\/span>div<\/span> class<\/span>=<\/span>\"<\/span>imgBodyBlock<\/span>\"<\/span> ><\/span>\r\n            <<\/span>ng<\/span>-<\/span>container<\/span> *<\/span>ngIf<\/span>=<\/span>\"<\/span>catdata<\/span>\"<\/span>;<\/span> else<\/span>=<\/span>\"<\/span>elseBlock<\/span>\"<\/span>><\/span>\r\n                <<\/span>img<\/span> [<\/span>src<\/span>]<\/span>=<\/span>\"<\/span>catdata.url<\/span>\"<\/span> alt<\/span>=<\/span>\"<\/span>Cat<\/span>\"<\/span> width<\/span>=<\/span>\"<\/span>450px<\/span>\"<\/span> height<\/span>=<\/span>\"<\/span>300px<\/span>\"<\/span>><\/span>\r\n            <<\/span>\/ng-container<\/span>>\r\n<\/span>            <<\/span>ng<\/span>-<\/span>template<\/span> #<\/span>elseBlock<\/span>><\/span>\r\n                <<\/span>p<\/span>><\/span>{{<\/span> error<\/span> }}<\/span><<\/span>\/p<\/span>>\r\n<\/span>            <<\/span>\/ng-template<\/span>>\r\n<\/span>        <<\/span>\/div<\/span>>\r\n<\/span><<\/span>\/div<\/span>>\r\n<\/span>\r\n<\/code><\/pre>\n
\r\n.<\/span>Button<\/span> {<\/span>\r\n    background<\/span>-<\/span>color<\/span>:<\/span> #<\/span>FF6B6B<\/span>;<\/span>\r\n    color<\/span>:<\/span> white<\/span>;<\/span>\r\n    padding<\/span>:<\/span> 1<\/span>rem<\/span> 2<\/span>rem<\/span>;<\/span>\r\n    border<\/span>-<\/span>radius<\/span>:<\/span> 0.4<\/span>rem<\/span>;<\/span>\r\n    cursor<\/span>:<\/span> pointer<\/span>;<\/span>\r\n    text<\/span>-<\/span>align<\/span>:<\/span> center<\/span>;<\/span>\r\n    margin<\/span>:<\/span> 0<\/span> auto<\/span>;<\/span>\r\n    display<\/span>:<\/span> block<\/span>;<\/span>\r\n    font<\/span>-<\/span>size<\/span>:<\/span> 1.2<\/span>rem<\/span>;<\/span>\r\n    font<\/span>-<\/span>weight<\/span>:<\/span> bold<\/span>;<\/span>\r\n    box<\/span>-<\/span>shadow<\/span>:<\/span> 0<\/span> 4<\/span>px<\/span> 6<\/span>px<\/span> rgba<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 0.1<\/span>);<\/span>\r\n    transition<\/span>:<\/span> background<\/span>-<\/span>color<\/span> 0.3<\/span>s<\/span>,<\/span> transform<\/span> 0.2<\/span>s<\/span>,<\/span> box<\/span>-<\/span>shadow<\/span> 0.3<\/span>s<\/span>;<\/span>\r\n}<\/span>\r\n\r\n.<\/span>Button<\/span>:<\/span>hover<\/span> {<\/span>\r\n    background<\/span>-<\/span>color<\/span>:<\/span> #<\/span>FF4040<\/span>;<\/span>\r\n    transform<\/span>:<\/span> scale<\/span>(<\/span>1.05<\/span>);<\/span>\r\n    box<\/span>-<\/span>shadow<\/span>:<\/span> 0<\/span> 6<\/span>px<\/span> 10<\/span>px<\/span> rgba<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 0.2<\/span>);<\/span>\r\n}<\/span>\r\n\r\n.<\/span>Button<\/span>:<\/span>active<\/span> {<\/span>\r\n    background<\/span>-<\/span>color<\/span>:<\/span> #<\/span>FF4040<\/span>;<\/span>\r\n    transform<\/span>:<\/span> translateY<\/span>(<\/span>2<\/span>px<\/span>);<\/span>\r\n    box<\/span>-<\/span>shadow<\/span>:<\/span> none<\/span>;<\/span>\r\n}<\/span>\r\n\r\n@<\/span>keyframes<\/span> shake<\/span> {<\/span>\r\n    0<\/span>%<\/span> {<\/span> transform<\/span>:<\/span> translateX<\/span>(<\/span>0<\/span>);<\/span> }<\/span>\r\n    25<\/span>%<\/span> {<\/span> transform<\/span>:<\/span> translateX<\/span>(<\/span>-<\/span>5<\/span>px<\/span>)<\/span> rotate<\/span>(<\/span>5<\/span>deg<\/span>);<\/span> }<\/span>\r\n    50<\/span>%<\/span> {<\/span> transform<\/span>:<\/span> translateX<\/span>(<\/span>5<\/span>px<\/span>)<\/span> rotate<\/span>(<\/span>-<\/span>5<\/span>deg<\/span>);<\/span> }<\/span>\r\n    75<\/span>%<\/span> {<\/span> transform<\/span>:<\/span> translateX<\/span>(<\/span>-<\/span>5<\/span>px<\/span>)<\/span> rotate<\/span>(<\/span>5<\/span>deg<\/span>);<\/span> }<\/span>\r\n    100<\/span>%<\/span> {<\/span> transform<\/span>:<\/span> translateX<\/span>(<\/span>0<\/span>);<\/span> }<\/span>\r\n}<\/span>\r\n.<\/span>mainBodyBlock<\/span> {<\/span>\r\n    width<\/span>:<\/span> 500<\/span>px<\/span>;<\/span>\r\n    height<\/span>:<\/span> 600<\/span>px<\/span>;<\/span>\r\n    margin<\/span>:<\/span> auto<\/span>;<\/span>\r\n    padding<\/span>:<\/span> 30<\/span>px<\/span>;<\/span>\r\n    background<\/span>-<\/span>color<\/span>:<\/span> #<\/span>E5E9F2<\/span>;<\/span>\r\n    border<\/span>-<\/span>radius<\/span>:<\/span> 10<\/span>px<\/span>;<\/span>\r\n    box<\/span>-<\/span>shadow<\/span>:<\/span> 0<\/span> 2<\/span>px<\/span> 4<\/span>px<\/span> rgba<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 0.1<\/span>);<\/span>\r\n}<\/span>\r\n\r\n.<\/span>titleText<\/span> {<\/span>\r\n    text<\/span>-<\/span>align<\/span>:<\/span> center<\/span>;<\/span>\r\n    color<\/span>:<\/span> #<\/span>3498<\/span>DB<\/span>;<\/span>\r\n    font<\/span>-<\/span>size<\/span>:<\/span> 1.5<\/span>rem<\/span>;<\/span>\r\n    font<\/span>-<\/span>weight<\/span>:<\/span> bold<\/span>;<\/span>\r\n    margin<\/span>-<\/span>bottom<\/span>:<\/span> 20<\/span>px<\/span>;<\/span>\r\n}<\/span>\r\n\r\n.<\/span>imgBodyBlock<\/span> {<\/span>\r\n    background<\/span>-<\/span>color<\/span>:<\/span> #<\/span>FFFFFF<\/span>;<\/span>\r\n    width<\/span>:<\/span> 450<\/span>px<\/span>;<\/span>\r\n    height<\/span>:<\/span> 300<\/span>px<\/span>;<\/span>\r\n    margin<\/span>-<\/span>top<\/span>:<\/span> 50<\/span>px<\/span>;<\/span>\r\n    margin<\/span>-<\/span>left<\/span>:<\/span> auto<\/span>;<\/span>\r\n    margin<\/span>-<\/span>right<\/span>:<\/span> auto<\/span>;<\/span>\r\n    background<\/span>-<\/span>image<\/span>:<\/span> url<\/span>(<\/span>\"<\/span>..\/..\/..\/assets\/GalaxyNeko.jpg<\/span>\"<\/span>);<\/span>\r\n    background<\/span>-<\/span>repeat<\/span>:<\/span> no<\/span>-<\/span>repeat<\/span>;<\/span>\r\n    background<\/span>-<\/span>size<\/span>:<\/span> cover<\/span>;<\/span>\r\n    border<\/span>-<\/span>radius<\/span>:<\/span> 10<\/span>px<\/span>;<\/span>\r\n    box<\/span>-<\/span>shadow<\/span>:<\/span> 0<\/span> 4<\/span>px<\/span> 8<\/span>px<\/span> rgba<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 0.1<\/span>);<\/span>\r\n}<\/span>\r\n\r\n.<\/span>imgBodyBlock<\/span> img<\/span> {<\/span>\r\n    width<\/span>:<\/span> 100<\/span>%<\/span>;<\/span>\r\n    height<\/span>:<\/span> 100<\/span>%<\/span>;<\/span>\r\n    object<\/span>-<\/span>fit<\/span>:<\/span> cover<\/span>;<\/span>\r\n    border<\/span>-<\/span>radius<\/span>:<\/span> 10<\/span>px<\/span>;<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\"image.png\"<\/div>\n
\"image.png\"<\/div>\n
\u4f3c\u4e4e.subscribe\u5df2\u7ecf\u8fc7\u65f6\uff0c\u5efa\u8bae\u6539\u4e3a\u4f7f\u7528async\u7ba1\u9053\u7684\u63cf\u8ff0\u65b9\u5f0f\u3002<\/p>\n
import<\/span> {<\/span> Component<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> Catmodel<\/span> }<\/span> from<\/span> '<\/span>src\/app\/model\/catModel<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> CatService<\/span> }<\/span> from<\/span> '<\/span>src\/app\/service\/catService<\/span>'<\/span>;<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-cat-img<\/span>'<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> '<\/span>.\/cat-img.component.html<\/span>'<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>'<\/span>.\/cat-img.component.css<\/span>'<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> CatImgComponent<\/span> {<\/span>\r\n\r\n  catdata$<\/span>!<\/span>:<\/span> Observable<\/span><<\/span>Catmodel<\/span>><\/span>;<\/span>\r\n  error<\/span>?:<\/span> string<\/span>;<\/span>\r\n\r\n  constructor<\/span>(<\/span>private<\/span> catService<\/span>:<\/span> CatService<\/span>)<\/span> {<\/span> }<\/span>\r\n\r\n  onClick<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>getCatImg<\/span>();<\/span>\r\n  }<\/span>\r\n\r\n  getCatImg<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>catdata$<\/span> =<\/span> this<\/span>.<\/span>catService<\/span>.<\/span>getCatImgService<\/span>().<\/span>pipe<\/span>(<\/span>\r\n      catchError<\/span>(<\/span>error<\/span> =><\/span> {<\/span>\r\n        this<\/span>.<\/span>error<\/span> =<\/span> '<\/span>\u753b\u50cf\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/span>'<\/span>;<\/span>\r\n        return<\/span> throwError<\/span>(<\/span>\"<\/span>\u753b\u50cf\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/span>\"<\/span>);<\/span>\r\n      })<\/span>\r\n    );<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
<<\/span>div<\/span> class<\/span>=<\/span>\"<\/span>mainBodyBlock<\/span>\"<\/span>><\/span>\r\n  <<\/span>p<\/span> class<\/span>=<\/span>\"<\/span>titleText<\/span>\"<\/span>><\/span>\u732b\u306e\u753b\u50cf\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u8868\u793a<\/span><<\/span>\/p<\/span>>\r\n<\/span>  <<\/span>span<\/span> class<\/span>=<\/span>\"<\/span>Button<\/span>\"<\/span> (<\/span>click<\/span>)<\/span>=<\/span>\"<\/span>onClick()<\/span>\"<\/span>><\/span>click<\/span><<\/span>\/span<\/span>>\r\n<\/span>  <<\/span>div<\/span> class<\/span>=<\/span>\"<\/span>imgBodyBlock<\/span>\"<\/span>><\/span>\r\n    <<\/span>ng<\/span>-<\/span>container<\/span> *<\/span>ngIf<\/span>=<\/span>\"<\/span>catdata$ | async as catdata; else elseBlock<\/span>\"<\/span>><\/span>\r\n      <<\/span>img<\/span> class<\/span>=<\/span>\"<\/span>catImg<\/span>\"<\/span> [<\/span>src<\/span>]<\/span>=<\/span>\"<\/span>catdata.url<\/span>\"<\/span> alt<\/span>=<\/span>\"<\/span>Cat<\/span>\"<\/span>><\/span>\r\n    <<\/span>\/ng-container<\/span>>\r\n<\/span>    <<\/span>ng<\/span>-<\/span>template<\/span> #<\/span>elseBlock<\/span>><\/span>\r\n      <<\/span>p<\/span>><\/span>{{<\/span> error<\/span> }}<\/span><<\/span>\/p<\/span>>\r\n<\/span>    <<\/span>\/ng-template<\/span>>\r\n<\/span>  <<\/span>\/div<\/span>>\r\n<\/span><<\/span>\/div<\/span>>\r\n<\/span>\r\n<\/code><\/pre>\n
\u53e6\u5916\u8fd8\u6709…<\/h1>\n
\u6211\u8fd8\u5199\u8fc7\u8fd9\u6837\u7684\u6587\u7ae0\u3002<\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
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