{"id":39318,"date":"2023-05-09T01:15:01","date_gmt":"2023-01-08T01:44:15","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e6%b7%bb%e5%8a%a0%e5%92%8c%e6%9b%b4%e6%94%b9%e4%b8%8b%e6%8b%89%e8%8f%9c%e5%8d%95%e9%80%89%e9%a1%b9\/"},"modified":"2024-04-30T03:16:20","modified_gmt":"2024-04-29T19:16:20","slug":"%e3%80%90angular%e3%80%91%e6%b7%bb%e5%8a%a0%e5%92%8c%e6%9b%b4%e6%94%b9%e4%b8%8b%e6%8b%89%e8%8f%9c%e5%8d%95%e9%80%89%e9%a1%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e6%b7%bb%e5%8a%a0%e5%92%8c%e6%9b%b4%e6%94%b9%e4%b8%8b%e6%8b%89%e8%8f%9c%e5%8d%95%e9%80%89%e9%a1%b9\/","title":{"rendered":"\u3010Angular\u3011\u6dfb\u52a0\u548c\u66f4\u6539\u4e0b\u62c9\u83dc\u5355\u9009\u9879"},"content":{"rendered":"<h1>\u7b80\u800c\u8a00\u4e4b<\/h1>\n<p>\u4f7f\u7528\u53cd\u5e94\u5f0f\u8868\u5355\u53ef\u4ee5\u5e26\u6765\u5e78\u798f\u3002<\/p>\n<h1>\u60f3\u8981\u5b9e\u73b0\u7684\u76ee\u6807<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u306b\u30b5\u30fc\u30d0API\u7d4c\u7531\u3067DB\u304b\u3089\u53d6\u5f97\u3057\u305f\u5185\u5bb9\u3092\u8868\u793a\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u540c\u69d8\u306b\u3001\u30b5\u30fc\u30d0API\u7d4c\u7531\u3067\u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u9805\u76ee\u306e\u8ffd\u52a0\u3001\u5909\u66f4\u3092\u304a\u3053\u306a\u3046<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u8ffd\u52a0\u5f8c\u306f\u8ffd\u52a0\u3055\u308c\u305f\u9805\u76ee\u3092\u3001\u5909\u66f4\u5f8c\u306f\u5909\u66f4\u3055\u308c\u305f\u9805\u76ee\u3092\u9078\u629e\u72b6\u614b\u306b\u3059\u308b<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d399b37434c4406c7a47a\/4-0.gif\" alt=\"AngularDropdown.gif\" \/><\/div>\n<h1>\u73af\u5883<\/h1>\n<h3>Node.js<\/h3>\n<p>Node.js \u662f\u4e00\u4e2a\u57fa\u4e8e Chrome V8 \u5f15\u64ce\u7684 JavaScript \u8fd0\u884c\u65f6\u73af\u5883\u3002<\/p>\n<pre class=\"post-pre\"><code>root@user:\/app\/my-app# node <span class=\"nt\">--version<\/span>\r\nv12.7.0\r\n<\/code><\/pre>\n<h3>\u89d2\u5ea6\/\u89d2\u5ea6\u5ea6\u91cf<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nl\">\"dependencies\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"@angular\/animations\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/common\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/compiler\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/core\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/forms\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/platform-browser\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/platform-browser-dynamic\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"@angular\/router\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"~8.0.0\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u6e90\u4ee3\u7801<\/h1>\n<h3>\u6a21\u5757<\/h3>\n<p>\u5bfc\u5165ReactiveFormsModule\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">ReactiveFormsModule<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/forms<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">NgModule<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">imports<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"c1\">\/\/ other imports ...<\/span>\r\n    <span class=\"nx\">ReactiveFormsModule<\/span>\r\n  <span class=\"p\">]<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppModule<\/span> <span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<h3>\u7ec4\u4ef6<\/h3>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Component<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">,<\/span> <span class=\"nx\">HeroService<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">..\/hero.service<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">FormControl<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/forms<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Component<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">app-root<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">templateUrl<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/app.component.html<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">styleUrls<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"dl\">'<\/span><span class=\"s1\">.\/app.component.css<\/span><span class=\"dl\">'<\/span><span class=\"p\">]<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppComponent<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">heroes<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">[];<\/span> <span class=\"c1\">\/\/ \u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u8868\u793a\u30ea\u30b9\u30c8<\/span>\r\n  <span class=\"nx\">selectedHeroControl<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">FormControl<\/span><span class=\"p\">();<\/span>\r\n\r\n  <span class=\"c1\">\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u914d\u5217\u3092\u6271\u3046\u5834\u5408\u306f\u30b3\u30f3\u30da\u30a2\u95a2\u6570\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/span>\r\n  <span class=\"nx\">compareHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">hero1<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">,<\/span> <span class=\"nx\">hero2<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">):<\/span> <span class=\"nx\">boolean<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nx\">hero1<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">hero2<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"k\">private<\/span> <span class=\"nx\">heroService<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HeroService<\/span><span class=\"p\">)<\/span> <span class=\"p\">{}<\/span>\r\n\r\n  <span class=\"k\">async<\/span> <span class=\"nx\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroes<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroService<\/span><span class=\"p\">.<\/span><span class=\"nx\">getHeroes<\/span><span class=\"p\">().<\/span><span class=\"nx\">toPromise<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"c1\">\/\/ \u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">selectedHeroControl<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">FormControl<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroes<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"k\">async<\/span> <span class=\"nx\">onClickAddHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">addHero<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroService<\/span>\r\n      <span class=\"p\">.<\/span><span class=\"nx\">addHero<\/span><span class=\"p\">({<\/span> <span class=\"nx\">name<\/span> <span class=\"p\">}<\/span> <span class=\"k\">as<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"p\">.<\/span><span class=\"nx\">toPromise<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroes<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroService<\/span><span class=\"p\">.<\/span><span class=\"nx\">getHeroes<\/span><span class=\"p\">().<\/span><span class=\"nx\">toPromise<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"c1\">\/\/ \u8ffd\u52a0\u3057\u305fHero\u3092\u9078\u629e\u72b6\u614b\u306b\u3059\u308b<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">selectedHeroControl<\/span><span class=\"p\">.<\/span><span class=\"nx\">setValue<\/span><span class=\"p\">(<\/span><span class=\"nx\">addHero<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"k\">async<\/span> <span class=\"nx\">onClickUpdateHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">updateHero<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">selectedHeroControl<\/span><span class=\"p\">.<\/span><span class=\"nx\">value<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">,<\/span> <span class=\"nx\">name<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">updatedHero<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroService<\/span>\r\n      <span class=\"p\">.<\/span><span class=\"nx\">updateHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">updateHero<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"p\">.<\/span><span class=\"nx\">toPromise<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroes<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">heroService<\/span><span class=\"p\">.<\/span><span class=\"nx\">getHeroes<\/span><span class=\"p\">().<\/span><span class=\"nx\">toPromise<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"c1\">\/\/ \u5909\u66f4\u3057\u305fHero\u3092\u9078\u629e\u72b6\u614b\u306b\u3059\u308b<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">selectedHeroControl<\/span><span class=\"p\">.<\/span><span class=\"nx\">setValue<\/span><span class=\"p\">(<\/span><span class=\"nx\">updatedHero<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u6a21\u677f<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;select<\/span> <span class=\"na\">[formControl]=<\/span><span class=\"s\">\"selectedHeroControl\"<\/span> <span class=\"na\">[compareWith]=<\/span><span class=\"s\">\"compareHero\"<\/span><span class=\"nt\">&gt;<\/span>\r\n  <span class=\"nt\">&lt;option<\/span> <span class=\"na\">[ngValue]=<\/span><span class=\"s\">\"hero\"<\/span> <span class=\"na\">*ngFor=<\/span><span class=\"s\">\"let hero of heroes\"<\/span><span class=\"nt\">&gt;<\/span>{{ hero.name }}<span class=\"nt\">&lt;\/option&gt;<\/span>\r\n<span class=\"nt\">&lt;\/select&gt;<\/span>\r\n<span class=\"nt\">&lt;div&gt;<\/span>\r\n  <span class=\"nt\">&lt;label<\/span>\r\n    <span class=\"nt\">&gt;<\/span>Hero name:\r\n    <span class=\"nt\">&lt;input<\/span> <span class=\"na\">type=<\/span><span class=\"s\">\"text\"<\/span> <span class=\"na\">#heroName<\/span> <span class=\"nt\">\/&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/label&gt;<\/span>\r\n  <span class=\"nt\">&lt;button<\/span> <span class=\"na\">(click)=<\/span><span class=\"s\">\"onClickAddHero(heroName.value)\"<\/span><span class=\"nt\">&gt;<\/span>\u8ffd\u52a0<span class=\"nt\">&lt;\/button&gt;<\/span>\r\n  <span class=\"nt\">&lt;button<\/span> <span class=\"na\">(click)=<\/span><span class=\"s\">\"onClickUpdateHero(heroName.value)\"<\/span><span class=\"nt\">&gt;<\/span>\u66f4\u65b0<span class=\"nt\">&lt;\/button&gt;<\/span>\r\n<span class=\"nt\">&lt;\/div&gt;<\/span>\r\n<\/code><\/pre>\n<h3>\u670d\u52a1<\/h3>\n<p>\u4e0d\u7ec6\u8bf4\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Injectable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Observable<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">rxjs<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">Hero<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">id<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"nl\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span><span class=\"p\">,<\/span> <span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">id<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">name<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Injectable<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">providedIn<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">root<\/span><span class=\"dl\">'<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HeroService<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">getHeroes<\/span><span class=\"p\">():<\/span> <span class=\"nx\">Observable<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">Hero<\/span><span class=\"p\">[]<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u30b5\u30fc\u30d0API\u3092Call\u3057\u3001\u53d6\u5f97\u3057\u305f\u4e00\u89a7\u3092\u8fd4\u3059<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">addHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">hero<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">):<\/span> <span class=\"nx\">Observable<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">Hero<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u30b5\u30fc\u30d0API\u3092Call\u3057\u3001\u8ffd\u52a0\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">updateHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">hero<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">):<\/span> <span class=\"nx\">Observable<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">Hero<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u30b5\u30fc\u30d0API\u3092Call\u3057\u3001\u66f4\u65b0\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u8865\u5145\u89e3\u91ca<\/h1>\n<h3>\u6bd4\u8f83\u51fd\u6570<\/h3>\n<p>Angular\u4f7f\u7528\u5bf9\u8c61ID\u6765\u552f\u4e00\u6807\u8bc6\u9009\u9879\u3002\u5f53\u8fdb\u884c\u66f4\u6539\u65f6\uff0c\u5f53\u524d\u663e\u793a\u7684\u9879\u76ee\u548c\u4ece\u670d\u52a1\u5668API\u91cd\u65b0\u83b7\u53d6\u7684\u9879\u76ee\u6dfb\u52a0\u7684\u9879\u76ee\u7684\u5bf9\u8c61ID\u662f\u4e0d\u540c\u7684\uff0c\u56e0\u6b64\u9700\u8981\u5b9e\u73b0\u6bd4\u8f83\u7b97\u6cd5\u6765\u5224\u65ad\u5b83\u4eec\u662f\u5426\u5339\u914d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppComponent<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">compareHero<\/span><span class=\"p\">(<\/span><span class=\"nx\">hero1<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">,<\/span> <span class=\"nx\">hero2<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Hero<\/span><span class=\"p\">):<\/span> <span class=\"nx\">boolean<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nx\">hero1<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">hero2<\/span><span class=\"p\">.<\/span><span class=\"nx\">id<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;select<\/span> <span class=\"na\">[compareWith]=<\/span><span class=\"s\">\"compareHero\"<\/span><span class=\"nt\">&gt;<\/span>\r\n<\/code><\/pre>\n<h3>\u68c0\u6d4b\u4e0b\u62c9\u83dc\u5355\u7684\u66f4\u6539\u7684\u65b9\u6cd5<\/h3>\n<p>\u4f7f\u7528FromControl\u7684valueChanges\u529f\u80fd\u3002<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"k\">async<\/span> <span class=\"nx\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">selectedHeroControl<\/span><span class=\"p\">.<\/span><span class=\"nx\">valueChanges<\/span><span class=\"p\">.<\/span><span class=\"nx\">subscribe<\/span><span class=\"p\">(<\/span><span class=\"nx\">hero<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Selected Hero: <\/span><span class=\"p\">${<\/span><span class=\"nx\">hero<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">});<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u8bf7\u53c2\u8003<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Reactive Forms<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">SelectControlValueAccessor<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u800c\u8a00\u4e4b \u4f7f\u7528\u53cd\u5e94\u5f0f\u8868\u5355\u53ef\u4ee5\u5e26\u6765\u5e78\u798f\u3002 \u60f3\u8981\u5b9e\u73b0\u7684\u76ee\u6807 \u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u306b\u30b5\u30fc\u30d0API\u7d4c\u7531\u3067DB\u304b\u3089\u53d6\u5f97\u3057\u305f\u5185\u5bb9 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-39318","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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