{"id":39298,"date":"2023-07-01T08:47:05","date_gmt":"2023-09-20T18:22:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%87%aa%e5%ae%9a%e4%b9%89angular%e5%b1%9e%e6%80%a7%e6%8c%87%e4%bb%a4%e3%80%82\/"},"modified":"2024-04-30T11:28:45","modified_gmt":"2024-04-30T03:28:45","slug":"%e8%87%aa%e5%ae%9a%e4%b9%89angular%e5%b1%9e%e6%80%a7%e6%8c%87%e4%bb%a4%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%87%aa%e5%ae%9a%e4%b9%89angular%e5%b1%9e%e6%80%a7%e6%8c%87%e4%bb%a4%e3%80%82\/","title":{"rendered":"\u81ea\u5b9a\u4e49[Angular]\u5c5e\u6027\u6307\u4ee4"},"content":{"rendered":"<h1>\u8d77\u521d<\/h1>\n<p>\u636e\u672c\u5bb6\u8868\u793a\uff0cAngular\u6709\u4e09\u4e2a\u6307\u4ee4\u3002\u4ee5\u4e0b\u662f\u6458\u5f55\u5185\u5bb9\u3002<\/p>\n<blockquote><p>Angular \u6307\u4ee4\u6982\u89c8<br \/>\nAngular \u4e2d\u6709\u4e09\u79cd\u6307\u4ee4\u7c7b\u578b\uff1a<br \/>\n1. \u7ec4\u4ef6 &#8211; \u5e26\u6709\u6a21\u677f\u7684\u6307\u4ee4\u3002<br \/>\n2. \u7ed3\u6784\u6027\u6307\u4ee4 &#8211; \u901a\u8fc7\u6dfb\u52a0\u548c\u79fb\u9664 DOM \u5143\u7d20\u6765\u6539\u53d8 DOM \u5e03\u5c40\u3002<br \/>\n3. \u5c5e\u6027\u6307\u4ee4 &#8211; \u6539\u53d8\u5143\u7d20\u3001\u7ec4\u4ef6\u6216\u5176\u4ed6\u6307\u4ee4\u7684\u5916\u89c2\u6216\u884c\u4e3a\u3002<\/p>\n<p>\u4e09\u79cd\u6307\u4ee4\u4e2d\uff0c\u7ec4\u4ef6\u662f\u6700\u5e38\u89c1\u7684\u3002\u4f60\u5728\u5feb\u901f\u5165\u95e8\u6307\u5357\u4e2d\u7b2c\u4e00\u6b21\u770b\u5230\u4e86\u7ec4\u4ef6\u3002<br \/>\n\u7ed3\u6784\u6027\u6307\u4ee4\u6539\u53d8\u89c6\u56fe\u7684\u7ed3\u6784\u3002NgFor \u548c NgIf \u662f\u4e24\u4e2a\u4f8b\u5b50\u3002\u5728\u7ed3\u6784\u6027\u6307\u4ee4\u6307\u5357\u4e2d\u5b66\u4e60\u5b83\u4eec\u3002<br \/>\n\u5c5e\u6027\u6307\u4ee4\u7528\u4f5c\u5143\u7d20\u7684\u5c5e\u6027\u3002\u4f8b\u5982\uff0c\u5728\u6a21\u677f\u8bed\u6cd5\u6307\u5357\u4e2d\u5185\u7f6e\u7684 NgStyle \u6307\u4ee4\u53ef\u4ee5\u540c\u65f6\u6539\u53d8\u591a\u4e2a\u5143\u7d20\u7684\u6837\u5f0f\u3002<\/p><\/blockquote>\n<p>\u5206\u5225\u5c0d\u61c9\u5230\u4e09\u500b\u6307\u4ee4\uff0c\u5373\u300c\u5143\u4ef6\u6307\u4ee4\u300d\u3001\u300c\u7d50\u69cb\u6307\u4ee4\u300d\u548c\u300c\u5c6c\u6027\u6307\u4ee4\u300d\uff0c\u4e26\u4e14\u5728\u4e0a\u8ff0\u4e2d\u63d0\u5230\u5143\u4ef6\u4e5f\u662f\u6307\u4ee4\u4e4b\u4e00\u3002\u9084\u6709\uff0c\u5269\u4e0b\u7684\u5169\u500b\u6307\u4ee4\uff0c\u5373\u300c\u7d50\u69cb\u6307\u4ee4\u300d\u548c\u300c\u5c6c\u6027\u6307\u4ee4\u300d\uff0c\u90fd\u5177\u6709\u4ee5\u4e0b\u7279\u9ede\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u69cb\u9020\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6<\/ul>\n<\/li>\n<\/ul>\n<p>\u30d3\u30e5\u30fc\u306e\u69cb\u9020\u3092\u5909\u66f4\u3059\u308b<\/p>\n<p>ngIf \u3084 ngFor \u306e\u3088\u3046\u306b DOM \u306e\u8ffd\u52a0\u3084\u524a\u9664\u3092\u884c\u3046\u3053\u3068\u3067 DOM \u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u5909\u66f4\u3059\u308b<\/p>\n<p>\u5c5e\u6027\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6<\/p>\n<p>\u8981\u7d20\u306e\u5c5e\u6027\u3068\u3057\u3066\u6271\u308f\u308c\u308b<\/p>\n<p>NgStyle \u306e\u3088\u3046\u306b DOM \u8981\u7d20\u306e\u5909\u66f4\u3092\u884c\u3046\u3053\u3068\u3067\u898b\u305f\u76ee\u306a\u3069\u3092\u5909\u66f4\u3059\u308b<\/p>\n<p>\u6210\u4e3a\u4e8b\u5b9e\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u5c55\u793a\u4e00\u500b\u7c21\u55ae\u7684\u4f8b\u5b50\uff0c\u63a2\u8a0e&#8221;\u81ea\u88fd\u5c6c\u6027\u6307\u4ee4&#8221;\u7684\u6982\u5ff5\u3002<\/p>\n<h1>\u63d0\u4f9b\u6700\u65b0\u6d88\u606f<\/h1>\n<h2>2021\u5e741\u67089\u65e5<\/h2>\n<ul class=\"post-ul\">\u8a18\u4e8b\u5185\u3067\u6271\u3063\u305f\u30b3\u30fc\u30c9\u3092 Angular v11.0.5 \u3067\u78ba\u8a8d\u3057\u307e\u3057\u305f<\/ul>\n<h1>\u5de5\u4f5c\u73af\u5883<\/h1>\n<div>\n<div class=\"post-table\">\u74b0\u5883\u30d0\u30fc\u30b8\u30e7\u30f3\u5099\u8003<a href=\"https:\/\/cli.angular.io\/\" target=\"_blank\" rel=\"nofollow noopener\">Angular CLI<\/a><del>v6.0.0<\/del> v11.0.5<code>$ ng --version<\/code><a href=\"https:\/\/angular.io\/\" target=\"_blank\" rel=\"nofollow noopener\">Angular<\/a><del>v6.0.0<\/del> v11.0.5\u540c\u4e0a<a href=\"https:\/\/www.typescriptlang.org\/\" target=\"_blank\" rel=\"nofollow noopener\">TypeScript<\/a>v4.0.2\u540c\u4e0a<a href=\"https:\/\/nodejs.org\/ja\/\" target=\"_blank\" rel=\"nofollow noopener\">Node.js<\/a><del>v9.2.1<\/del> v12.18.3<code>$ node --version<\/code><a href=\"https:\/\/www.npmjs.com\/\" target=\"_blank\" rel=\"nofollow noopener\">npm<\/a><del>v6.1.0<\/del> v6.14.6<code>$ npm --version<\/code><\/div>\n<\/div>\n<details>ng version \u7684\u7ed3\u679c$ ng version<\/p>\n<p>_ _ ____ _ ___<br \/>\n\/ \\ _ __ __ _ _ _| | __ _ _ __ \/ ___| | |_ _|<br \/>\n\/ \u25b3 \\ | &#8216;_ \\ \/ _` | | | | |\/ _` | &#8216;__| | | | | | |<br \/>\n\/ ___ \\| | | | (_| | |_| | | (_| | | | |___| |___ | |<br \/>\n\/_\/ \\_\\_| |_|\\__, |\\__,_|_|\\__,_|_| \\____|_____|___|<br \/>\n|___\/<\/p>\n<p>Angular CLI: 11.0.5<br \/>\nNode: 12.18.3<br \/>\nOS: darwin x64<\/p>\n<p>Angular: 11.0.5<br \/>\n&#8230; \u52a8\u753b, \u547d\u4ee4\u884c\u754c\u9762, \u5e38\u7528, \u7f16\u8bd1\u5668, \u7f16\u8bd1\u5668CLI, \u6838\u5fc3, \u8868\u5355<br \/>\n&#8230; \u6d4f\u89c8\u5668\u5e73\u53f0, \u6d4f\u89c8\u5668\u52a8\u6001, \u8def\u7531\u5668<br \/>\nIvy \u5de5\u4f5c\u533a: \u662f<\/p>\n<p>\u5305 \u7248\u672c<br \/>\n&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<br \/>\n@angular-devkit\/architect 0.1100.5<br \/>\n@angular-devkit\/build-angular 0.1100.5<br \/>\n@angular-devkit\/core 11.0.5<br \/>\n@angular-devkit\/schematics 11.0.5<br \/>\n@schematics\/angular 11.0.5<br \/>\n@schematics\/update 0.1100.5<br \/>\nrxjs 6.6.0<br \/>\ntypescript 4.0.2<\/p>\n<\/details>\n<h1>\u751f\u6210\u6307\u4ee4<\/h1>\n<p>\u4f7f\u7528Angular CLI\u751f\u6210\u6307\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>ng g directive directive\/template\r\n  create src\/app\/directive\/template.directive.spec.ts\r\n  create src\/app\/directive\/template.directive.ts\r\n  update src\/app\/app.module.ts\r\n<\/code><\/pre>\n<h1>\u672c\u6587\u8ba8\u8bba\u7684\u6784\u6210<\/h1>\n<p>\u672c\u6587\u4e2d\u5c55\u793a\u4e86\u5305\u542b\u4e4b\u524d\u751f\u6210\u7684\u6307\u4ee4\u7684\u6784\u9020\u3002<\/p>\n<pre class=\"post-pre\"><code>src\/\r\n  <span class=\"sb\">`<\/span><span class=\"nt\">-app<\/span>\/\r\n    <span class=\"sb\">`<\/span><span class=\"nt\">-component<\/span>\/\r\n    |  <span class=\"sb\">`<\/span><span class=\"nt\">-use-directive<\/span>\/\r\n    |   <span class=\"sb\">`<\/span>- use-directive.component.css\r\n    |   <span class=\"sb\">`<\/span>- use-directive.component.html\r\n    |   <span class=\"sb\">`<\/span>- use-directive.component.ts\r\n    <span class=\"sb\">`<\/span><span class=\"nt\">-directive<\/span>\/\r\n    |  <span class=\"sb\">`<\/span>- template.directive.ts\r\n    <span class=\"sb\">`<\/span>- app.component.css\r\n    <span class=\"sb\">`<\/span>- app.component.html\r\n    <span class=\"sb\">`<\/span>- app.component.ts\r\n    <span class=\"sb\">`<\/span>- app.module.ts\r\n<\/code><\/pre>\n<p>\u8fd9\u6b21\u7684\u67b6\u6784\u5185\u5bb9\u5982\u4e0b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">use-directive.component<\/ul>\n<\/li>\n<\/ul>\n<p>\u81ea\u4f5c\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3067\u3042\u308b template.directive \u306e\u5229\u7528\u65b9\u6cd5\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<br \/>\n\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8 HTML \u306e\u4e2d\u3067 template.directive \u3092\u6271\u3046<\/p>\n<p>template.directive<\/p>\n<p>\u81ea\u4f5c\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6<br \/>\nuse-directive.component \u304b\u3089\u5229\u7528\u3055\u308c\uff64\u8981\u7d20\u306e\u5c5e\u6027\u3068\u3057\u3066\u6271\u308f\u308c\u308b<\/p>\n<p>app.component<\/p>\n<p>\u30eb\u30fc\u30c8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<br \/>\nuse-directive.component \u3092\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u6271\u3046<\/p>\n<p>app.module<\/p>\n<p>\u30eb\u30fc\u30c8\u30e2\u30b8\u30e5\u30fc\u30eb<br \/>\n\u672c\u69cb\u6210\u3067\u3042\u3064\u304b\u3046\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u7ba1\u7406\u3059\u308b<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u6765\u5b9e\u9645\u5b9e\u65bd\u6307\u4ee4\u7684\u5185\u5bb9\uff0c\u5e76\u63a2\u8ba8\u5982\u4f55\u5904\u7406\u5b83\u3002<\/p>\n<h1>\u5c5e\u6027\u6307\u4ee4\u7684\u5b9e\u73b0<\/h1>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Directive<\/span><span class=\"p\">,<\/span> <span class=\"nx\">ElementRef<\/span><span class=\"p\">,<\/span> <span class=\"nx\">Input<\/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\r\n<span class=\"p\">@<\/span><span class=\"nd\">Directive<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">[appTemplate]<\/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=\"nc\">TemplateDirective<\/span> <span class=\"k\">implements<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"cm\">\/**\r\n   * \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u53d7\u3051\u53d6\u308b\u30c7\u30fc\u30bf-1\r\n   *\r\n   * @type {string}\r\n   * @memberof TemplateDirective\r\n   *\/<\/span>\r\n  <span class=\"p\">@<\/span><span class=\"nd\">Input<\/span><span class=\"p\">()<\/span> <span class=\"k\">public<\/span> <span class=\"nx\">greet<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">''<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"cm\">\/**\r\n   * \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u53d7\u3051\u53d6\u308b\u30c7\u30fc\u30bf-2\r\n   *\r\n   * @type {string}\r\n   * @memberof TemplateDirective\r\n   *\/<\/span>\r\n  <span class=\"p\">@<\/span><span class=\"nd\">Input<\/span><span class=\"p\">()<\/span> <span class=\"k\">public<\/span> <span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">''<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"cm\">\/**\r\n   * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\r\n   *\r\n   * @param {ElementRef} elementRef \u3053\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u304c\u30bb\u30c3\u30c8\u3055\u308c\u305fDOM\u3078\u306e\u53c2\u7167\r\n   * @memberof TemplateDirective\r\n   *\/<\/span>\r\n  <span class=\"nf\">constructor<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"k\">private<\/span> <span class=\"nx\">elementRef<\/span><span class=\"p\">:<\/span> <span class=\"nx\">ElementRef<\/span>\r\n  <span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"cm\">\/**\r\n   * \u521d\u671f\u51e6\u7406\r\n   * \u672c\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3067\u306f\u3053\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u3092\r\n   * DOM\u306e innerHTML \u306b\u30bb\u30c3\u30c8\u3059\u308b\r\n   *\r\n   * @memberof TemplateDirective\r\n   *\/<\/span>\r\n  <span class=\"k\">public<\/span> <span class=\"nf\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">element<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">elementRef<\/span><span class=\"p\">.<\/span><span class=\"nx\">nativeElement<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nx\">element<\/span><span class=\"p\">.<\/span><span class=\"nx\">innerHTML<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">greet<\/span> <span class=\"o\">+<\/span> <span class=\"dl\">'<\/span> <span class=\"dl\">'<\/span> <span class=\"o\">+<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span> <span class=\"o\">+<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u6309\u7167\u4ee5\u4e0b\u987a\u5e8f\u9010\u4e00\u67e5\u770b\u8981\u70b9\u3002<\/p>\n<h2>\u4f7f\u7528\u88c5\u9970\u5668Directive\u6765\u58f0\u660e\u6307\u4ee4\u4fe1\u606f<\/h2>\n<p>\u8981\u521b\u5efa\u6307\u4ee4\uff0c\u9700\u8981\u58f0\u660eDirective\u88c5\u9970\u5668\u3002<br \/>\n\u56e0\u6b64\uff0c\u9996\u5148\u8981\u5bfc\u5165Directive\u6a21\u5757\uff0c\u5982\u4e0b\u6240\u793a\u3002<br \/>\n\uff08\u5b9e\u9645\u4e0a\uff0c\u5728\u4f7f\u7528\u4e4b\u524d\u901a\u8fc7\u5148\u524d\u63d0\u5230\u7684\u547d\u4ee4\u751f\u6210\u6307\u4ee4\u65f6\u4f1a\u81ea\u52a8\u5bfc\u5165\uff09<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Directive<\/span><span class=\"p\">,<\/span> <span class=\"nx\">ElementRef<\/span><span class=\"p\">,<\/span> <span class=\"nx\">Input<\/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<\/code><\/pre>\n<p>\u5ba3\u8a00\u5c06\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u8fdb\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">@<\/span><span class=\"nd\">Directive<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">[appTemplate]<\/span><span class=\"dl\">'<\/span>\r\n<span class=\"p\">})<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n<ul class=\"post-ul\">\u3053\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u304c selector \u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u6307\u5b9a\u3055\u308c\u305f\u5c5e\u6027\u3068\u3057\u3066\u6271\u308f\u308c\u308b<\/ul>\n<p>\u4ece\u4f7f\u7528\u8005\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5728\u8fd9\u4e2a\u610f\u4e49\u4e0a<\/p>\n<p>selector \u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u6307\u5b9a\u3055\u308c\u305f\u5024\u3092\u8981\u7d20\u306e\u5c5e\u6027\u306b\u30bb\u30c3\u30c8\u3059\u308b\u3053\u3068\u3067\uff64\u3053\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u9069\u7528\u3067\u304d\u308b<\/p>\n<p>\u8fd9\u53e5\u8bdd\u7684\u610f\u601d\u662f\u4ec0\u4e48\uff1f<\/p>\n<h2>\u4f7f\u7528\u88c5\u9970\u5668\u4fee\u9970\u7684\u5c5e\u6027\u4ece\u63a5\u6536\u6570\u636e\u7684\u4e00\u65b9\u63a5\u6536\u6570\u636e\u3002<\/h2>\n<p>\u6307\u4ee4\u53ef\u4ee5\u88ab\u5b9a\u4e49\u4e3a&#8221;\u5e26\u53c2\u6570\u7684\u6307\u4ee4&#8221;\u3002<br \/>\n\u5982\u679c\u8981\u63a5\u6536\u5c5e\u6027\u503c\u4f5c\u4e3a\u53c2\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 @Input \u88c5\u9970\u5668\u3002<br \/>\n\u5b9e\u9645\u4ee3\u7801\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">@<\/span><span class=\"nd\">Input<\/span><span class=\"p\">()<\/span> <span class=\"k\">public<\/span> <span class=\"nx\">greet<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">@<\/span><span class=\"nd\">Input<\/span><span class=\"p\">()<\/span> <span class=\"k\">public<\/span> <span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u53c2\u8003\u8fd9\u91cc\uff0c\u5173\u4e8e\u88c5\u9970\u5668\u7684\u5185\u5bb9\u3002<\/p>\n<h2>\u4f7f\u7528ElementRef\u83b7\u53d6\u5143\u7d20\u5bf9\u8c61\u5e76\u8fdb\u884c\u4f7f\u7528\u3002<\/h2>\n<p>\u5728\u83b7\u53d6\u8981\u7d20\u5bf9\u8c61\u7684\u6a21\u5757\u4e2d\uff0c\u6709\u4e00\u4e2a\u5143\u7d20\u5f15\u7528\uff08ElementRef\uff09\u3002<br \/>\n\u901a\u8fc7\u4f7f\u7528\u5b83\uff0c\u53ef\u4ee5\u201c\u83b7\u53d6\u5230\u8bbe\u7f6e\u4e86\u8be5\u6307\u4ee4\u7684 DOM \u5143\u7d20\u201d\uff0c\u4ece\u800c\u8f7b\u677e\u5b9e\u73b0\u4f5c\u4e3a\u5c5e\u6027\u6307\u4ee4\u7684\u5143\u7d20\u4fee\u6539\u3002<\/p>\n<p>\u5f53\u6211\u4eec\u5b9e\u9645\u67e5\u770b\u4ee3\u7801\u65f6\uff0c\u6211\u4eec\u4f1a\u5728\u4ee5\u4e0b\u4ee3\u7801\u4e2d\u8fdb\u884c ElementRef \u7684\u5bfc\u5165\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Directive<\/span><span class=\"p\">,<\/span> <span class=\"nx\">ElementRef<\/span><span class=\"p\">,<\/span> <span class=\"nx\">Input<\/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<\/code><\/pre>\n<p>\u901a\u8fc7\u5728\u6784\u9020\u51fd\u6570\u4e2d\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\uff0c\u4f7fElementRef\u53ef\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"nf\">constructor<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"k\">private<\/span> <span class=\"nx\">elementRef<\/span><span class=\"p\">:<\/span> <span class=\"nx\">ElementRef<\/span>\r\n  <span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6700\u540e\uff0c\u4f7f\u7528 nativeElement \u53d6\u5f97 DOM \u5143\u7d20\uff0c\u5e76\u8fdb\u884c\u5143\u7d20\u7684\u4fee\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">public<\/span> <span class=\"nf\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">element<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">elementRef<\/span><span class=\"p\">.<\/span><span class=\"nx\">nativeElement<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"nx\">element<\/span><span class=\"p\">.<\/span><span class=\"nx\">innerHTML<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">greet<\/span> <span class=\"o\">+<\/span> <span class=\"dl\">'<\/span> <span class=\"dl\">'<\/span> <span class=\"o\">+<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span> <span class=\"o\">+<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6839\u636e\u4e0a\u8ff0\u4ee3\u7801\uff0c\u53ef\u4ee5\u901a\u8fc7 nativeElement \u83b7\u53d6\u5143\u7d20\uff0c\u8be5\u5143\u7d20\u901a\u5e38\u662f\u666e\u901a\u7684 DOM \u5143\u7d20\u672c\u8eab\uff0c\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7 innerHTML \u7b49\u65b9\u5f0f\u7b80\u5355\u5730\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002<\/p>\n<h1>\u6ce8\u518c\u6307\u4ee4<\/h1>\n<p>\u4e3a\u4e86\u4f7f\u7528\u521b\u5efa\u7684\u5c5e\u6027\u6307\u4ee4\uff0c\u5728app.module.ts\u4e2d\u6ce8\u518c\u3002<br \/>\n\u5b9e\u9645\u4e0a\uff0c\u5f53\u4f7f\u7528\u4e0a\u8ff0\u547d\u4ee4\u751f\u6210\u6307\u4ee4\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u6ce8\u518c\uff0c\u56e0\u6b64\u9700\u8981\u786e\u8ba4\u5176\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u524d\u7565...<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">TemplateDirective<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/directive\/template.directive<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"c1\">\/\/ \u4e2d\u7565...<\/span>\r\n<span class=\"p\">@<\/span><span class=\"nd\">NgModule<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">declarations<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"c1\">\/\/ \u4e2d\u7565...<\/span>\r\n    <span class=\"nx\">TemplateDirective<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"p\">],<\/span>\r\n  <span class=\"c1\">\/\/ \u4e2d\u7565...<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">AppModule<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5c06\u751f\u6210\u7684\u6307\u4ee4\u5bfc\u5165\u5e76\u8bbe\u7f6e\u5230declarations\u4e2d\uff0c\u5c31\u53ef\u4ee5\u6ce8\u518c\u6307\u4ee4\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u90fd\u53ef\u4ee5\u4f7f\u7528\u8be5\u6307\u4ee4\u4e86\u3002<\/p>\n<h1>\u4f7f\u7528\u7ec4\u4ef6\u4e2d\u7684\u6307\u4ee4<\/h1>\n<p>\u5728\u7ec4\u4ef6\u7684\u6a21\u677f\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u6307\u4ee4\u6307\u5b9a\u4e3a\u5143\u7d20\u7684\u5c5e\u6027\u6765\u4f7f\u7528\u3002\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">&lt;!-- \u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u6307\u5b9a\u3057\u3066\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u30bb\u30c3\u30c8\u3059\u308b\u4f8b --&gt;<\/span>\r\n<span class=\"nt\">&lt;div<\/span> <span class=\"na\">appTemplate<\/span> <span class=\"na\">[greet]=<\/span><span class=\"s\">\"'Hello'\"<\/span> <span class=\"na\">[name]=<\/span><span class=\"s\">\"'Angular'\"<\/span><span class=\"nt\">&gt;&lt;\/div&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528div\u5143\u7d20\u7684\u5c5e\u6027appTemplate\u521b\u5efa\u7684\u6307\u4ee4\uff0c\u8fd9\u4e2a\u6307\u4ee4\u53ef\u4ee5\u4f7f\u7ec4\u4ef6\u7528\u4e8e\u4ee3\u7801\u4e2d\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ctemplate.directive.ts \u51c6\u5907\u4e86\u4e24\u4e2a\u901a\u8fc7 @Input \u88c5\u9970\u5668\u4fee\u9970\u7684\u5c5e\u6027\u4f5c\u4e3a\u5916\u90e8\u4f20\u5165\u7684\u5c5e\u6027\u503c\u7684\u53c2\u6570\u3002<br \/>\n\u5728\u4f7f\u7528\u8fd9\u4e9b\u88ab @Input \u4fee\u9970\u7684\u5c5e\u6027\u65f6\uff0c\u7ec4\u4ef6\u9700\u8981\u5728\u8c03\u7528 template.directive.ts \u65f6\u8c03\u7528\u5b83\u4eec\u3002<\/p>\n<pre class=\"post-pre\"><code>[greet]=\"'Hello'\" [name]=\"'Angular'\"\r\n<\/code><\/pre>\n<p>\u8bbe\u7f6e\u4e86\u4e24\u4e2a\u5c5e\u6027\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cgreet\u548cname\u76f4\u63a5\u8bbe\u7f6e\u4e86\u5b57\u7b26\u4e32\uff0c\u4f46\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5c5e\u6027\u7ed1\u5b9a\u5c06\u7ec4\u4ef6\u4e2d\u5b9a\u4e49\u7684\u53d8\u91cf\u8bbe\u7f6e\u8fdb\u53bb\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u6b64\u4ee3\u7801\u7684\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u3002<\/p>\n<h1>\u6267\u884c\u7ed3\u679c\u3002<\/h1>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d39c337434c4406c7b160\/62-0.png\" alt=\"attribute_directive_result.png\" \/><\/div>\n<p>\u5f53\u4f7f\u7528 use-directive.component.html \u6587\u4ef6\u6765\u8c03\u7528 template.directive.ts \u65f6\uff0c\u53ef\u4ee5\u786e\u8ba4\u901a\u8fc7\u8bbe\u7f6e\u503c\u4e3a&#8221;Hello&#8221;\u548c&#8221;Angular&#8221;\u7684\u65b9\u5f0f\uff0cDOM\u5143\u7d20\u5728template.directive.ts\u4e2d\u7ecf\u8fc7\u53d8\u66f4\u540e\u5f97\u4ee5\u663e\u793a\u3002<\/p>\n<h1>\u6e90\u4ee3\u7801<\/h1>\n<p>\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\u4f7f\u7528\u7684\u4ee3\u7801\u5df2\u5728\u6b64\u5904\u4e0a\u4f20\uff0c\u8bf7\u4f9b\u53c2\u8003\u3002<\/p>\n<h1>\u8bf7\u63d0\u4f9b\u4ee5\u4e0b\u5185\u5bb9\u7684\u4e00\u4e2a\u4e2d\u6587\u672c\u5730\u5316\u7248\u672c:<\/h1>\n<p>\u53c2\u8003 \uff1a<\/p>\n<ul class=\"post-ul\">\u672c\u5bb6\u306e Attribute Directives<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u8d77\u521d \u636e\u672c\u5bb6\u8868\u793a\uff0cAngular\u6709\u4e09\u4e2a\u6307\u4ee4\u3002\u4ee5\u4e0b\u662f\u6458\u5f55\u5185\u5bb9\u3002 Angular \u6307\u4ee4\u6982\u89c8 Angular \u4e2d\u6709\u4e09 [&hellip;]<\/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-39298","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\/ -->\n<title>\u81ea\u5b9a\u4e49[Angular]\u5c5e\u6027\u6307\u4ee4 - 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\/\u81ea\u5b9a\u4e49angular\u5c5e\u6027\u6307\u4ee4\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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