{"id":39208,"date":"2023-01-14T15:25:36","date_gmt":"2023-12-19T13:51:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%80%bc%e4%bc%a0%e9%80%92\/"},"modified":"2024-04-29T09:53:20","modified_gmt":"2024-04-29T01:53:20","slug":"%e3%80%90angular%e3%80%91%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%80%bc%e4%bc%a0%e9%80%92","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%80%bc%e4%bc%a0%e9%80%92\/","title":{"rendered":"\u3010Angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012"},"content":{"rendered":"

\u4f20\u9012\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c
\n\u9002\u7528\u4e8e\u5e0c\u671b\u5148\u8fd0\u884c\u793a\u4f8b\u5e76\u5b66\u4e60\u7684\u4eba\u3002
\n\u8be6\u7ec6\u89e3\u91ca\u7559\u7ed9\u94fe\u63a5\u6216\u8bfb\u8005\u81ea\u884c\u641c\u7d22\u3002
\n\u867d\u7136\u4f7f\u7528\u4e86Angular Material\uff0c\u4f46\u4e0d\u8be6\u8ff0\u3002<\/p>\n

\u4ea4\u4ed8\u65b9\u5f0f<\/h1>\n

\u4f7f\u7528Input\u548cOutput
\n\u4f7f\u7528service
\n\u4f7f\u7528RxJS
\n\u9644\u52a0\u5230URL<\/p><\/blockquote>\n

\u6211\u8ba4\u4e3a\u53ea\u8981\u4f7f\u7528\u8fd9\u4e9b\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\uff0c\u95ee\u9898\u90fd\u80fd\u591f\u89e3\u51b3\u3002<\/p>\n

\u4f7f\u7528\u8f93\u5165\u548c\u8f93\u51fa<\/h2>\n

\u5f53\u7236\u7ec4\u4ef6\u5305\u542b\u5b50\u7ec4\u4ef6\u65f6\u624d\u6709\u6548\u3002\u5373\u5f53\u5b50\u7ec4\u4ef6\u88ab\u5d4c\u5165\u5728\u7236\u7ec4\u4ef6\u4e2d\u65f6\u3002<\/p>\n

\u4e86\u89e3Angular\u4e2d\u7684@Input()\u3001@Output()\u3002
\n\u3010Angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u6570\u636e\u7684\u4f20\u9012\u65b9\u6cd5\u3002<\/p>\n

\u4eb2\u7ec4\u4ef6<\/h4>\n
<div<\/span> class=<\/span>\"parent\"<\/span>><\/span>\r\n    <!-- app-parts-input\u306f\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 --><\/span>\r\n    <app-parts-input<\/span> \r\n        [ctrName]=<\/span>\"this.form\"<\/span> ph=<\/span>\"\u540d\u524d\u3092\u5165\u529b\"<\/span> la=<\/span>\"\u540d\u524d\"<\/span>\r\n    ><\/app-parts-input><\/span>\r\n<\/div><\/span>\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> FormControl<\/span> }<\/span> from<\/span> \"<\/span>@angular\/forms<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> DataToSendComponent<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  form<\/span>:<\/span> FormControl<\/span>;<\/span>\r\n\r\n  constructor<\/span>()<\/span> {<\/span> }<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>form<\/span> =<\/span> new<\/span> FormControl<\/span>(<\/span>\"\"<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5b50\u7ec4\u4ef6<\/h4>\n
<mat-form-field><\/span>\r\n  <mat-label><\/span>{{ this.la }}<\/mat-label><\/span>\r\n  <input<\/span>\r\n    matInput<\/span> [placeholder]=<\/span>\"ph\"<\/span> [formControl]=<\/span>\"ctrName\"<\/span> (keyup)=<\/span>\"output()\"<\/span>\r\n  \/><\/span>\r\n<\/mat-form-field><\/span>\r\n<\/code><\/pre>\n
import<\/span> {<\/span> Component<\/span>,<\/span> Input<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> AbstractControl<\/span> }<\/span> from<\/span> \"<\/span>@angular\/forms<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> InputPartsComponent<\/span> {<\/span>\r\n  @<\/span>Input<\/span>()<\/span> ctrName<\/span>:<\/span> AbstractControl<\/span>;<\/span>\r\n  @<\/span>Input<\/span>()<\/span> ph<\/span>:<\/span> string<\/span>;<\/span>\r\n  @<\/span>Input<\/span>()<\/span> la<\/span>:<\/span> string<\/span>;<\/span>\r\n\r\n  constructor<\/span>()<\/span> {<\/span> }<\/span>\r\n\r\n  output<\/span>()<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>this<\/span>.<\/span>ctrName<\/span>.<\/span>value<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u6211\u4eec\u5c06`formControl`\u3001`placeholder`\u7684\u503c\u4ee5\u53ca`label`\u7684\u503c\u4ece\u7236\u7ec4\u4ef6\uff08\u7070\u8272\uff09\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\uff08\u767d\u8272\uff09\uff0c\u5e76\u5728\u5b50\u7ec4\u4ef6\u4e2d\u4f7f\u7528\u3002<\/p>\n
\u4e0b\u4e00\u6b65\u662f\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u57fa\u7840\u4e0a\uff0c\u5c1d\u8bd5\u4ece\u5b50\u7ec4\u4ef6\u5411\u7236\u7ec4\u4ef6\u4f20\u9012\u503c\uff0c\u901a\u8fc7Output\u5b9e\u73b0\u3002<\/p>\n
\u4eb2\u7ec4\u4ef6<\/h4>\n
<div<\/span> class=<\/span>\"parent\"<\/span>><\/span>\r\n    <app-parts-input<\/span> [ctrName]=<\/span>\"this.form\"<\/span> ph=<\/span>\"\u540d\u524d\u3092\u5165\u529b\"<\/span> la=<\/span>\"\u540d\u524d\"<\/span> (childEvent)=<\/span>\"getString($event)\"<\/span>><\/app-parts-input><\/span>\r\n    <p><\/span>{{this.text}}<\/p><\/span>\r\n<\/div><\/span>\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> FormControl<\/span> }<\/span> from<\/span> \"<\/span>@angular\/forms<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> DataToSendComponent<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  form<\/span>:<\/span> FormControl<\/span>;<\/span>\r\n  text<\/span>:<\/span> string<\/span>;<\/span>\r\n  constructor<\/span>()<\/span> {<\/span> }<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>form<\/span> =<\/span> new<\/span> FormControl<\/span>(<\/span>\"\"<\/span>);<\/span>\r\n  }<\/span>\r\n\r\n  getString<\/span>(<\/span>event<\/span>:<\/span> string<\/span>)<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>event<\/span>);<\/span>\r\n    this<\/span>.<\/span>text<\/span> =<\/span> event<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5b50\u7ec4\u4ef6 (z\u01d0<\/h4>\n
html\u5909\u66f4\u306a\u3057\r\n<\/code><\/pre>\n
import<\/span> {<\/span> Component<\/span>,<\/span> Input<\/span>,<\/span> Output<\/span>,<\/span> EventEmitter<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> AbstractControl<\/span> }<\/span> from<\/span> \"<\/span>@angular\/forms<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> InputPartsComponent<\/span> {<\/span>\r\n  @<\/span>Input<\/span>()<\/span> ctrName<\/span>:<\/span> AbstractControl<\/span>;<\/span>\r\n  @<\/span>Input<\/span>()<\/span> ph<\/span>:<\/span> string<\/span>;<\/span>\r\n  @<\/span>Input<\/span>()<\/span> la<\/span>:<\/span> string<\/span>;<\/span>\r\n  @<\/span>Output<\/span>()<\/span> childEvent<\/span> =<\/span> new<\/span> EventEmitter<\/span><<\/span>string<\/span>><\/span>();<\/span>\r\n  constructor<\/span>()<\/span> {<\/span> }<\/span>\r\n\r\n  output<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>childEvent<\/span>.<\/span>emit<\/span>(<\/span>this<\/span>.<\/span>ctrName<\/span>.<\/span>value<\/span>);<\/span>\/\/<-\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u706b<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u4f7f\u7528\u670d\u52a1<\/h2>\n
\u53c2\u8003
\n\u6dfb\u52a0Angular\u65e5\u672c\u8bed\u6587\u6863\u670d\u52a1
\n[Angular] \u4f7f\u7528Angular CLI\u751f\u6210\u670d\u52a1<\/p>\n
\u670d\u52a1<\/h4>\n
\/\/service<\/span>\r\nimport<\/span> {<\/span> Injectable<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\n\r\n@<\/span>Injectable<\/span>({<\/span>\r\n  providedIn<\/span>:<\/span> \"<\/span>root<\/span>\"<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> CommonService<\/span> {<\/span>\r\n  messege<\/span>:<\/span> string<\/span>;<\/span>\r\n\r\n  constructor<\/span>()<\/span> {}<\/span>\r\n\r\n  setMessege<\/span>(<\/span>text<\/span>:<\/span> string<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>messege<\/span> =<\/span> text<\/span>;<\/span>\r\n  }<\/span>\r\n  getMessege<\/span>()<\/span> {<\/span>\r\n    return<\/span> this<\/span>.<\/span>messege<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4eb2\u7ec4\u4ef6<\/h4>\n
<!-- html --><\/span>\r\n<div<\/span> class=<\/span>\"parent\"<\/span>><\/span>\r\n  <h4><\/span>\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/h4><\/span>\r\n  <app-test><\/app-test><\/span>\r\n<\/div><\/span>\r\n\r\n<\/code><\/pre>\n
\/\/ts<\/span>\r\nimport<\/span> {<\/span> Component<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> CommonService<\/span> }<\/span> from<\/span> \"<\/span>.\/common.service<\/span>\"<\/span>;<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> \"<\/span>app-root<\/span>\"<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> \"<\/span>.\/parent.component.html<\/span>\"<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>\"<\/span>.\/parent.component.scss<\/span>\"<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ParentComponent<\/span> {<\/span>\r\n  parentMessege<\/span> =<\/span> \"<\/span>\u89aa\u304b\u3089\u306e\u30e1\u30c3\u30bb\u30fc\u30b8<\/span>\"<\/span>;<\/span>\r\n\r\n  constructor<\/span>(<\/span>private<\/span> commonService<\/span>:<\/span> CommonService<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>commonService<\/span>.<\/span>setMessege<\/span>(<\/span>this<\/span>.<\/span>parentMessege<\/span>);<\/span>\/\/<-\u30b5\u30fc\u30d3\u30b9\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30bb\u30c3\u30c8<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec4\u4ef6\u5b50\u7c7b\u522b<\/h4>\n
<!-- html --><\/span>\r\n<div<\/span> class=<\/span>\"child\"<\/span>><\/span>\r\n  <h4><\/span>\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/h4><\/span>\r\n  <button<\/span> (click)=<\/span>\"onClick()\"<\/span>><\/span>\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d6\u5f97<\/button><\/span>\r\n  <p><\/span>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a{{ messege }}<\/p><\/span>\r\n<\/div><\/span>\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> CommonService<\/span> }<\/span> from<\/span> \"<\/span>..\/common.service<\/span>\"<\/span>;<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> \"<\/span>app-child<\/span>\"<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> \"<\/span>.\/child.component.html<\/span>\"<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>\"<\/span>.\/child.component.scss<\/span>\"<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ChildComponent<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  messege<\/span>:<\/span> string<\/span>;<\/span>\r\n  constructor<\/span>(<\/span>private<\/span> commonService<\/span>:<\/span> CommonService<\/span>)<\/span> {}<\/span>\r\n  ngOnInit<\/span>()<\/span> {}<\/span>\r\n  onClick<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>messege<\/span> =<\/span> this<\/span>.<\/span>commonService<\/span>.<\/span>getMessege<\/span>();<\/span>\/\/<-\u30b5\u30fc\u30d3\u30b9\u4e0a\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u4f7f\u7528RxJS<\/h2>\n
\u53c2\u8003\uff1a\u6574\u7406RxJS\u7684\u57fa\u7840\u77e5\u8bc6
\n\u5728Angular\u4e2d\u505c\u6b62Observable\uff08\u6d41\uff09\u7684\u8ba2\u9605\u65b9\u6cd5<\/p>\n
\u5728\u5148\u524d\u7684\u670d\u52d9\u4f8b\u5b50\u4e2d\uff0c\u5118\u7ba1\u53ef\u4ee5\u9032\u884c\u4ea4\u4ed8\u672c\u8eab\uff0c
\n\u4f46\u7121\u6cd5\u5728\u503c\u88ab\u653e\u5165\u6642\uff0c\u5c07\u503c\u50b3\u905e\u4e26\u53cd\u6620\u5728\u7d44\u4ef6\u4e4b\u9593\uff0c\u9019\u6a23\u7684\u8655\u7406\u7121\u6cd5\u5be6\u73fe\u3002
\n\u5728\u670d\u52d9\u4e2d\u9700\u8981\u6309\u4e0b\u6309\u9215\u9019\u500b\u52d5\u4f5c\u3002
\n\u8981\u5728\u503c\u88ab\u653e\u5165\u6642\u5be6\u73fe\u50b3\u905e\uff0c\u53ef\u4ee5\u4f7f\u7528RxJS\u4f86\u5be6\u73fe\u3002<\/p>\n
\u7528\u4e8e\u6f14\u793a\u7684\u6837\u4f8b\u662f\uff0c\u5c06\u8f93\u5165\u7684\u503c\u9010\u4e2a\u5b57\u7b26\u5730\u53d1\u9001\u5230\u5176\u4ed6\u7ec4\u4ef6\u3002\u6211\u4eec\u9700\u8981\u51c6\u5907\u4e24\u4e2a\u7ec4\u4ef6\uff1a\u2460\u7528\u4e8e\u663e\u793a\u8f93\u5165\u7684\u7ec4\u4ef6\uff0c\u2461\u7528\u4e8e\u663e\u793a\u63a5\u6536\u5230\u7684\u503c\u7684\u7ec4\u4ef6\u3002\u8fd8\u9700\u8981\u4e00\u4e2a\u7528\u4e8e\u4f7f\u7528RxJS\u7684\u670d\u52a1\u3002<\/p>\n
<!-- \u2460html --><\/span>\r\n<div<\/span> class=<\/span>\"parent\"<\/span>><\/span>\r\n    <mat-form-field><\/span>\r\n        <mat-label><\/span>\u540d\u524d<\/mat-label><\/span>\r\n        <input<\/span> matInput<\/span> placeholder=<\/span>\"\u540d\u524d\"<\/span> [formControl]=<\/span>\"form\"<\/span> (keyup)=<\/span>\"output()\"<\/span> \/><\/span>\r\n    <\/mat-form-field><\/span>\r\n    <app-child><\/app-child><\/span>\r\n<\/div><\/span>\r\n<\/code><\/pre>\n
\/\/ \u2460ts<\/span>\r\nimport<\/span> {<\/span> Component<\/span>,<\/span> OnInit<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> FormControl<\/span> }<\/span> from<\/span> \"<\/span>@angular\/forms<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> \r\n   ObservableSampleService<\/span>\r\n }<\/span> from<\/span> \"<\/span>..\/..\/service\/observable-sample.service<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> ObservableComponent<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  form<\/span>:<\/span> FormControl<\/span>;<\/span>\r\n  constructor<\/span>(<\/span>private<\/span> obss<\/span>:<\/span> ObservableSampleService<\/span>)<\/span> {<\/span> }<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>form<\/span> =<\/span> new<\/span> FormControl<\/span>(<\/span>\"\"<\/span>);<\/span>\r\n  }<\/span>\r\n\r\n  output<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>obss<\/span>.<\/span>testSubject<\/span>.<\/span>next<\/span>(<\/span>this<\/span>.<\/span>form<\/span>.<\/span>value<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
<!-- \u2461html --><\/span>\r\n<p><\/span>{{this.text}}<\/p><\/span>\r\n<\/code><\/pre>\n
\/\/\u2461ts<\/span>\r\nimport<\/span> {<\/span> Component<\/span>,<\/span> OnInit<\/span>,<\/span> OnDestroy<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> Observable<\/span>,<\/span> Subscription<\/span> }<\/span> from<\/span> \"<\/span>rxjs<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> \r\n   ObservableSampleService<\/span>\r\n}<\/span> from<\/span> \"<\/span>..\/..\/..\/service\/observable-sample.service<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> class<\/span> ChildComponent<\/span> implements<\/span> OnInit<\/span>,<\/span> OnDestroy<\/span> {<\/span>\r\n\r\n  Obs<\/span>:<\/span> Observable<\/span><<\/span>string<\/span>><\/span>;<\/span>\r\n  Subs<\/span>:<\/span> Subscription<\/span>;<\/span>\r\n  text<\/span>:<\/span> string<\/span>;<\/span>\r\n  constructor<\/span>(<\/span>private<\/span> obss<\/span>:<\/span> ObservableSampleService<\/span>)<\/span> {<\/span> }<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>Obs<\/span> =<\/span> this<\/span>.<\/span>obss<\/span>.<\/span>testSubject$<\/span>;<\/span>\r\n    this<\/span>.<\/span>Subs<\/span> =<\/span> this<\/span>.<\/span>Obs<\/span>.<\/span>subscribe<\/span>(<\/span>str<\/span> =><\/span> {<\/span>\r\n      this<\/span>.<\/span>text<\/span> =<\/span> str<\/span>;<\/span>\r\n    });<\/span>\r\n  }<\/span>\r\n\r\n  ngOnDestroy<\/span>()<\/span> {<\/span>\r\n    if<\/span> (<\/span>this<\/span>.<\/span>Subs<\/span>)<\/span> {<\/span>\r\n      this<\/span>.<\/span>Subs<\/span>.<\/span>unsubscribe<\/span>();<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/service<\/span>\r\nimport<\/span> {<\/span> Injectable<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> Subject<\/span> }<\/span> from<\/span> \"<\/span>rxjs<\/span>\"<\/span>;<\/span>\r\n@<\/span>Injectable<\/span>({<\/span>\r\n  providedIn<\/span>:<\/span> '<\/span>root<\/span>'<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ObservableSampleService<\/span> {<\/span>\r\n  testSubject<\/span> =<\/span> new<\/span> Subject<\/span><<\/span>string<\/span>><\/span>();<\/span>\r\n  constructor<\/span>()<\/span> {<\/span> }<\/span>\r\n\r\n  get<\/span> testSubject$<\/span>()<\/span> {<\/span>\r\n    return<\/span> this<\/span>.<\/span>testSubject<\/span>.<\/span>asObservable<\/span>();<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u5728\u7f51\u5740\u4e4b\u540e\u6dfb\u52a0<\/h2>\n
\u4f7f\u7528\u8def\u7531\u6765\u6dfb\u52a0\u5e94\u7528\u5185\u5bfc\u822a\u3002<\/p>\n
\u5f53\u9700\u8981\u521b\u5efa\u6bcf\u4e2aid\u7684\u9875\u9762\u65f6\u7b49\u7b49\u3002
\n\u5f53\u70b9\u51fb\u94fe\u63a5\u65f6\uff0c\u83b7\u53d6\u5e76\u663e\u793a\u4e0e\u6307\u5b9aid\u76f8\u5bf9\u5e94\u7684\u4fe1\u606f\u7684\u793a\u4f8b\u3002<\/p>\n
\u6211\u5011\u5c07\u63d0\u4f9b\u4e00\u500b\u7d44\u4ef6\u4f86\u986f\u793a\u93c8\u63a5\uff0c\u4e00\u500b\u7d44\u4ef6\u4f86\u986f\u793a\u7528\u6236\u4fe1\u606f\uff0c\u4ee5\u53ca\u4e00\u500b\u670d\u52d9\u4f86\u8fd4\u56de\u6578\u64da\u5eab\u7684\u4fe1\u606f\u3002<\/p>\n
\/\/app.module.ts<\/span>\r\nimport<\/span> {<\/span> BrowserModule<\/span> }<\/span> from<\/span> \"<\/span>@angular\/platform-browser<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> NgModule<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\n\r\nimport<\/span> {<\/span> AppComponent<\/span> }<\/span> from<\/span> \"<\/span>.\/app.component<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> UserInfoComponent<\/span> }<\/span> from<\/span> \"<\/span>.\/user-info\/user-info.component<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> Routes<\/span>,<\/span> RouterModule<\/span> }<\/span> from<\/span> \"<\/span>@angular\/router<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> DefaultComponent<\/span> }<\/span> from<\/span> \"<\/span>.\/default\/default.component<\/span>\"<\/span>;<\/span>\r\n\r\nconst<\/span> routes<\/span>:<\/span> Routes<\/span> =<\/span> [<\/span>\r\n  {<\/span> path<\/span>:<\/span> \"\"<\/span>,<\/span> component<\/span>:<\/span> DefaultComponent<\/span> },<\/span>\r\n  {<\/span> path<\/span>:<\/span> \"<\/span>user-info\/:id<\/span>\"<\/span>,<\/span> component<\/span>:<\/span> UserInfoComponent<\/span> }<\/span> \/\/ <-\/:id\u3000\u8ffd\u52a0<\/span>\r\n];<\/span>\r\n@<\/span>NgModule<\/span>({<\/span>\r\n  declarations<\/span>:<\/span> [<\/span>AppComponent<\/span>,<\/span> UserInfoComponent<\/span>,<\/span> DefaultComponent<\/span>],<\/span>\r\n  imports<\/span>:<\/span> [<\/span>BrowserModule<\/span>,<\/span> RouterModule<\/span>.<\/span>forRoot<\/span>(<\/span>routes<\/span>)],<\/span>\r\n  providers<\/span>:<\/span> [],<\/span>\r\n  bootstrap<\/span>:<\/span> [<\/span>AppComponent<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> AppModule<\/span> {}<\/span>\r\n\r\n<\/code><\/pre>\n
<!-- app.component.html --><\/span>\r\n<router-outlet><\/router-outlet><\/span>\r\n<\/code><\/pre>\n
\/\/info.service<\/span>\r\nimport<\/span> {<\/span> Injectable<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\n\r\n@<\/span>Injectable<\/span>({<\/span>\r\n  providedIn<\/span>:<\/span> \"<\/span>root<\/span>\"<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> InfoService<\/span> {<\/span>\r\n  user<\/span> =<\/span> [<\/span>\r\n    {<\/span> id<\/span>:<\/span> 1111<\/span>,<\/span> name<\/span>:<\/span> \"<\/span>\u82b1\u5b50<\/span>\"<\/span> },<\/span>\r\n    {<\/span> id<\/span>:<\/span> 1112<\/span>,<\/span> name<\/span>:<\/span> \"<\/span>\u592a\u90ce<\/span>\"<\/span> }<\/span>\r\n  ];<\/span>\r\n  constructor<\/span>()<\/span> {}<\/span>\r\n  getUser<\/span>(<\/span>id<\/span>:<\/span> number<\/span>)<\/span> {<\/span>\/\/id\u304c\u4e00\u81f4\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306e\u60c5\u5831\u3092\u8fd4\u5374\u3059\u308b<\/span>\r\n    for<\/span> (<\/span>let<\/span> i<\/span> in<\/span> this<\/span>.<\/span>user<\/span>)<\/span> {<\/span>\r\n      if<\/span> (<\/span>this<\/span>.<\/span>user<\/span>[<\/span>i<\/span>].<\/span>id<\/span> ===<\/span> id<\/span>)<\/span> {<\/span>\r\n        return<\/span> this<\/span>.<\/span>user<\/span>[<\/span>i<\/span>];<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
<!-- user-info.component.html --><\/span>\r\n<p><\/span>\u79c1\u306e\u540d\u524d\u306f{{ userinfo.name }}\u3067\u3059\u3002<\/p><\/span>\r\n<\/code><\/pre>\n
\/\/user-info.component.ts<\/span>\r\nimport<\/span> {<\/span> Component<\/span>,<\/span> OnInit<\/span> }<\/span> from<\/span> \"<\/span>@angular\/core<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> ActivatedRoute<\/span> }<\/span> from<\/span> \"<\/span>@angular\/router<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> InfoService<\/span> }<\/span> from<\/span> \"<\/span>src\/app\/service\/info.service<\/span>\"<\/span>;<\/span>\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> \"<\/span>app-user-info<\/span>\"<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> \"<\/span>.\/user-info.component.html<\/span>\"<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>\"<\/span>.\/user-info.component.scss<\/span>\"<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> UserInfoComponent<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  userinfo<\/span>;<\/span>\r\n  constructor<\/span>(<\/span>\r\n    private<\/span> infoservice<\/span>:<\/span> InfoService<\/span>,<\/span>\r\n    private<\/span> route<\/span>:<\/span> ActivatedRoute<\/span>\r\n  )<\/span> {}<\/span>\r\n\r\n  ngOnInit<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>userinfo<\/span> =<\/span> this<\/span>.<\/span>getInfo<\/span>();<\/span>\r\n  }<\/span>\r\n\r\n  \/**\r\n   * URL\u306eid\u3092\u5143\u306b\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\r\n   *\/<\/span>\r\n  getInfo<\/span>()<\/span> {<\/span>\r\n    const<\/span> id<\/span> =<\/span> this<\/span>.<\/span>route<\/span>.<\/span>snapshot<\/span>.<\/span>paramMap<\/span>.<\/span>get<\/span>(<\/span>\"<\/span>id<\/span>\"<\/span>);<\/span>\r\n    return<\/span> this<\/span>.<\/span>infoservice<\/span>.<\/span>getUser<\/span>(<\/span>Number<\/span>(<\/span>id<\/span>));<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u5e0c\u671b\u8fd9\u4e9b\u662f\u4e00\u4e2a\u57fa\u7840\u64cd\u4f5c\u793a\u4f8b\uff0c\u80fd\u591f\u6210\u4e3a\u5927\u5bb6\u7406\u89e3\u7684\u8d77\u70b9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f20\u9012\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c \u9002\u7528\u4e8e\u5e0c\u671b\u5148\u8fd0\u884c\u793a\u4f8b\u5e76\u5b66\u4e60\u7684\u4eba\u3002 \u8be6\u7ec6\u89e3\u91ca\u7559\u7ed9\u94fe\u63a5\u6216\u8bfb\u8005\u81ea\u884c\u641c\u7d22\u3002 \u867d\u7136\u4f7f\u7528\u4e86Angular […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-39208","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u3010Angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012\" \/>\n<meta property=\"og:description\" content=\"\u4f20\u9012\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c \u9002\u7528\u4e8e\u5e0c\u671b\u5148\u8fd0\u884c\u793a\u4f8b\u5e76\u5b66\u4e60\u7684\u4eba\u3002 \u8be6\u7ec6\u89e3\u91ca\u7559\u7ed9\u94fe\u63a5\u6216\u8bfb\u8005\u81ea\u884c\u641c\u7d22\u3002 \u867d\u7136\u4f7f\u7528\u4e86Angular […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-12-19T13:51:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T01:53:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d393037434c4406c78ff3\/13-0.png\" \/>\n<meta name=\"author\" content=\"\u97f5, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u97f5, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%80%bc%e4%bc%a0%e9%80%92\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90angular%e3%80%91%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%80%bc%e4%bc%a0%e9%80%92\/\",\"name\":\"\u3010Angular\u3011\u7ec4\u4ef6\u4e4b\u95f4\u7684\u503c\u4f20\u9012 - 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