\u8fd9\u662fWantedly Advent Calendar 2015\u6d3b\u52a8\u7b2c17\u5929\u7684\u5e16\u5b50\u3002<\/p>\n
\u6211\u662fWantedly\u5de5\u7a0b\u5e08@KentoMoriwaki\u3002<\/p>\n
Angular2.0 beta\u7ec8\u4e8e\u53d1\u5e03\u4e86\uff0c\u4f46\u662f\u7531\u4e8e\u7f3a\u4e4f\u5411\u540e\u517c\u5bb9\u6027\u548c\u4f7f\u7528TypeScript\u7f16\u5199\uff0c\u7ed9\u4eba\u4e00\u79cd\u96be\u4ee5\u5165\u624b\u7684\u5370\u8c61\u3002<\/p>\n
\u7136\u800c\uff0c\u5f53\u6211\u4eb2\u81ea\u8bd5\u7528\u540e\uff0c\u89e3\u51b3\u4e86\u6211\u57281.x\u7248\u672c\u4e2d\u4e0d\u6ee1\u610f\u7684\u90e8\u5206\uff0c\u53ef\u4ee5\u76f8\u5f53\u6f02\u4eae\u5730\u8fdb\u884c\u63cf\u8ff0\uff0c\u6240\u4ee5\u6211\u975e\u5e38\u559c\u6b22\u5b83\u3002<\/p>\n
\u56e0\u6b64\uff0c\u6211\u5e0c\u671b\u901a\u8fc7\u5728Angular1\u548cAngular2\u4e2d\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5316\u7248\u672c\u7684ngHideDirective\uff0c\u540d\u4e3amyHide\uff0c\u6765\u8fdb\u884c\u6bd4\u8f83\uff0c\u4ee5\u4fbf\u8ba9\u5927\u5bb6\u5bf9Angular2\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\u3002\u6211\u5199\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5e0c\u671b\u5927\u5bb6\u80fd\u591f\u4ece\u4e2d\u53d7\u76ca\u3002<\/p>\n
\u8fd9\u91cc\u7684\u76ee\u6807\u7fa4\u4f53\u662f\u90a3\u4e9b\u66fe\u7ecf\u7a0d\u5fae\u63a5\u89e6\u8fc7Angular1\u7684\u4eba\u3002\u6211\u5199\u7684\u5185\u5bb9\u610f\u56fe\u662f\u4f7f\u4e0d\u4e86\u89e3TypeScript\u7684\u4eba\u4e5f\u80fd\u7406\u89e3\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u4f1a\u5728Angular1\u4e2d\u8bd5\u7740\u5199\u4e00\u4e0b\u3002
\nmy-hide\u6307\u4ee4\u6839\u636e\u7ed9\u5b9a\u5c5e\u6027\u7684\u503c\u53d8\u5316\uff0c\u4f1a\u6dfb\u52a0\u6216\u79fb\u9664ng-hide\u7c7b\u3002
\n\u4f7f\u7528\u8be5\u6307\u4ee4\u7684HTML\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
<div<\/span> my-hide=<\/span>\"hidden\"<\/span>><\/span> \r\n Hide me!\r\n<\/div><\/span>\r\n<\/code><\/pre>\n\u9690\u85cf\u7684\u503c\u51b3\u5b9a\u4e86\u201c\u9690\u85cf\u6211\uff01\u201d\u7684\u663e\u793a\u548c\u9690\u85cf\u5207\u6362\u7684\u5f62\u8c61\u3002<\/p>\n
\u8fd9\u662fDirective\u7684\u5b9a\u4e49\u5f62\u5f0f\u3002<\/p>\n
angular<\/span>.<\/span>module<\/span>(<\/span>'<\/span>myApp<\/span>'<\/span>).<\/span>directive<\/span>(<\/span>'<\/span>myHide<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n return<\/span> {<\/span>\r\n restrict<\/span>:<\/span> '<\/span>A<\/span>'<\/span>,<\/span>\r\n link<\/span>:<\/span> function<\/span>(<\/span>scope<\/span>,<\/span> element<\/span>,<\/span> attr<\/span>)<\/span> {<\/span>\r\n scope<\/span>.<\/span>$watch<\/span>(<\/span>attr<\/span>.<\/span>ngHide<\/span>,<\/span> function<\/span>(<\/span>value<\/span>)<\/span> {<\/span>\r\n element<\/span>[<\/span>value<\/span> ?<\/span> '<\/span>addClass<\/span>'<\/span> :<\/span> '<\/span>removeClass<\/span>'<\/span>](<\/span>'<\/span>ng-hide<\/span>'<\/span>)<\/span>\r\n });<\/span>\r\n }<\/span>\r\n };<\/span>\r\n});<\/span>\r\n<\/code><\/pre>\n\u672c\u5bb6\u7684ngHide\u5b9e\u73b0\u5927\u4f53\u76f8\u540c\uff0c\u5c3d\u7ba1\u4f7f\u7528\u4e86$animate\u8fdb\u884c\u52a8\u753b\u6548\u679c\u7684\u63a7\u5236\uff0c\u540c\u65f6\u8fd8\u5305\u542b\u4e86\u4e00\u4e9b\u6027\u80fd\u65b9\u9762\u7684\u8bbe\u7f6e\u3002<\/p>\n
\u7b80\u5355\u6765\u89e3\u91ca\u6b63\u5728\u8fdb\u884c\u7684\u4e8b\u60c5\uff0c\u5c31\u662f\u5c06\u6307\u4ee4\u7684\u540d\u79f0\u548c\u8fd4\u56de\u5176\u914d\u7f6e\u7684\u51fd\u6570\u4f20\u9012\u7ed9app.directive\u3002\u5f53\u627e\u5230\u4f7f\u7528\u8be5\u6307\u4ee4\u7684\u5143\u7d20\u65f6\uff0clink\u51fd\u6570\u5728\u914d\u7f6e\u4e2d\u88ab\u8c03\u7528\uff0c\u5f00\u59cb\u76d1\u89c6hidden\u53c2\u6570\u7684\u53d8\u5316\uff0c\u5e76\u6839\u636e\u53d8\u5316\u6765\u64cd\u4f5cDOM\u5e76\u5207\u6362ng-hide\u7c7b\u7684\u9644\u52a0\u3002<\/p>\n
Angular2\u7684myHide<\/h1>\n
\u6211\u4eec\u6765\u8bd5\u7740\u7528Angular2\u7f16\u5199\u8fd9\u4e2amyHide\u3002
\n\u9996\u5148\uff0cHTML\u90e8\u5206\u660e\u663e\u4e0e1\u4e0d\u540c\u3002<\/p>\n
<div<\/span> [myHide]=<\/span>\"hidden\"<\/span>><\/span> \r\n Hide me!\r\n<\/div><\/span>\r\n<\/code><\/pre>\n\u539f\u672c\u662f\u7528\u8fde\u5b57\u7b26\u5199\u7684my-hide\uff0c\u73b0\u5728\u6539\u4e3a\u9a7c\u5cf0\u5f0f\u5199\u6cd5\u7684myHide\uff0c\u5e76\u4e14\u7528\u795e\u79d8\u7684[]\u62ec\u8d77\u6765\u4e86\u3002<\/p>\n
\u6211\u5f88\u9ad8\u5174ng-hide\u53d8\u4e3amyHide\uff0c\u56e0\u4e3a\u8fd9\u6837\u80fd\u4f7f\u6307\u4ee4\u5b9a\u4e49\u66f4\u52a0\u7edf\u4e00\u3002\u4ee5\u524d\u6709\u65f6\u5019\u5728\u5b9a\u4e49\u91cc\u4f1a\u5199\u9519\u6210app.directive(“my-hide”)\u4e4b\u7c7b\u7684\u3002<\/p>\n
\u6570\u636e\u7ed1\u5b9a<\/h2>\n
\u5bf9\u4e8e\u5927\u591a\u6570\u4eba\u6765\u8bf4\uff0c\u4ed6\u4eec\u65e0\u6cd5\u76f4\u89c2\u5730\u7406\u89e3[]\u8868\u793a\u4ec0\u4e48\u3002
\n\u5728[]\u7684\u6210\u5458\u4e2d\uff0c\u8fd8\u5b58\u5728()\u548c[()]\uff0c\u8fd9\u4e9b\u662f\u7528\u6765\u660e\u786e\u7ed1\u5b9a\u7c7b\u578b\u7684\u3002
\n\u5728Angular 1\u4e2d\uff0c\u4ec5\u901a\u8fc7\u67e5\u770b\u89c6\u56fe\u65e0\u6cd5\u76f4\u89c2\u5730\u4e86\u89e3\u5b9a\u4e49\u4e86\u54ea\u4e9b\u6307\u4ee4\uff0c\u4ee5\u53ca\u54ea\u4e9b\u5c5e\u6027\u5df2\u7ecf\u88ab\u7ed1\u5b9a\uff0c\u4f46\u5728Angular 2\u4e2d\uff0c\u4e00\u773c\u5c31\u80fd\u770b\u51fa\u7ed1\u5b9a\u7684\u65b9\u5f0f\u3002
\n\u5728Angular 2\u4e2d\uff0c\u7ed1\u5b9a\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u4e09\u79cd\u7c7b\u578b\u3002<\/p>\n
[] data => view \u306e\u4e00\u65b9\u5411\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/p>\n
\u4f8b: [myHide]=”hidden”
\n\u30c7\u30fc\u30bf\u306e\u5909\u66f4\u306b\u3088\u308a\u30d3\u30e5\u30fc\u3092\u5909\u66f4\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u3002
\nProperty Binding\u3068\u547c\u3070\u308c\u308b\u3002<\/p>\n
() view => data \u306e\u4e00\u65b9\u5411\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/p>\n
\u4f8b: (click)=”onClick()”<\/p>\n
\u30d3\u30e5\u30fc\u306e\u30a4\u30d9\u30f3\u30c8\u306b\u3088\u308a\u30c7\u30fc\u30bf\u3092\u5909\u66f4\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u3002<\/p>\n
Event Binding\u3068\u547c\u3070\u308c\u308b\u3002<\/p>\n
[()] \u53cc\u65b9\u5411\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0<\/p>\n
\u4f8b: [(ngModel)]=”model.name”<\/p>\n
[]\u3068()\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u53cc\u65b9\u5411\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u3002
\n\u5b9f\u969b\u3001\u3053\u306e\u4f8b\u306f[ngModel]=”model.name” (ngModelChange)=”model.name=$event”\u306e\u3088\u3046\u306b\uff12\u3064\u306b\u5206\u3051\u3066\u66f8\u304f\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n
\u5c3d\u7ba1\u8fd9\u4e2a\u8bed\u6cd5\u4e00\u5f00\u59cb\u770b\u4e0a\u53bb\u975e\u5e38\u5947\u602a\uff0c\u4f46\u4e00\u65e6\u7406\u89e3\u4e86\uff0c\u6211\u8ba4\u4e3a\u4e0e\u4e4b\u524d\u4e00\u76f4\u4f7f\u7528\u7684ng-foo=”bar”\u76f8\u6bd4\uff0c\u5bf9\u7ed3\u6784\u7684\u7406\u89e3\u53d8\u5f97\u66f4\u7b80\u5355\u4e86\u3002\u7136\u800c\uff0c\u6211\u4e5f\u62c5\u5fc3\u5b83\u4e0eHTML\u6a21\u677f\u5f15\u64ce\u7684\u517c\u5bb9\u6027\u8fdb\u4e00\u6b65\u4e0b\u964d\u4e86\u3002<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u8ba9\u6211\u4eec\u6765\u5b9a\u4e49Directive\u3002
\n\u867d\u7136\u6211\u662f\u7528TypeScript\u5199\u7684\uff0c\u4f46\u6211\u60f3\u8981\u7528\u7b80\u5355\u6613\u61c2\u7684\u65b9\u5f0f\u89e3\u91ca\uff0c\u4ee5\u4fbf\u521d\u5b66\u8005\u4e5f\u80fd\u7406\u89e3\u3002<\/p>\n
import<\/span> {<\/span>Directive<\/span>,<\/span> Input<\/span>,<\/span> ElementRef<\/span>,<\/span> Renderer<\/span>}<\/span> from<\/span> '<\/span>angular2\/core<\/span>'<\/span>;<\/span>\r\n\r\n@<\/span>Directive<\/span>({<\/span>\r\n selector<\/span>:<\/span> '<\/span>[myHide]<\/span>'<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> HideDirective<\/span> {<\/span>\r\n @<\/span>Input<\/span>(<\/span>'<\/span>myHide<\/span>'<\/span>)<\/span> set<\/span> value<\/span>(<\/span>val<\/span>:<\/span> boolean<\/span>)<\/span> {<\/span>\r\n this<\/span>.<\/span>renderer<\/span>.<\/span>setElementClass<\/span>(<\/span>this<\/span>.<\/span>el<\/span>,<\/span> '<\/span>ng-hide<\/span>'<\/span>,<\/span> val<\/span>);<\/span>\r\n }<\/span>\r\n\r\n constructor<\/span>(<\/span>private<\/span> el<\/span>:<\/span> ElementRef<\/span>,<\/span> private<\/span> renderer<\/span>:<\/span> Renderer<\/span>)<\/span> {<\/span> }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u6211\u4eec\u6240\u505a\u7684\u53ea\u662f\u5b9a\u4e49\u4e86HideDirective\u7c7b\u3002\u7531\u4e8e@XXX\u8fd9\u79cd\u5199\u6cd5\u5e76\u4e0d\u5e38\u89c1\uff0c\u53ef\u80fd\u4f1a\u8ba9\u4eba\u611f\u5230\u56f0\u60d1\uff0c\u4f46\u662f\u6682\u65f6\u5ffd\u7565\u5b83\u5e76\u8bfb\u4e00\u4e0b\uff0c\u5927\u6982\u5c31\u80fd\u7406\u89e3\u4e86\u3002<\/p>\n
\u4f9d\u8d56\u6ce8\u5165<\/h2>\n
\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u770b\u4e00\u4e0bHideDirective\u7c7b\u7684\u6784\u9020\u51fd\u6570\u3002<\/p>\n
constructor<\/span>(<\/span>private<\/span> el<\/span>:<\/span> ElementRef<\/span>,<\/span> private<\/span> renderer<\/span>:<\/span> Renderer<\/span>)<\/span> {<\/span> }<\/span>\r\n<\/code><\/pre>\n\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570el\u548crenderer\uff0c\u5b83\u4eec\u7684\u7c7b\u578b\u5206\u522b\u662fElementRef\u548cRenderer\u3002\u5c06\u5b83\u4eec\u8bbe\u4e3a\u5b9e\u4f8b\u53d8\u91cf\u3002ElementRef\u548cRenderer\u662fAngular2\u4e2d\u5b9a\u4e49\u7684\u7c7b\uff0c\u5728\u521d\u59cb\u5316\u65f6\u901a\u8fc7DI\u4f20\u9012\u4e86\u5b83\u4eec\u7684\u5b9e\u4f8b\u3002<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6b63\u5728\u89c2\u5bdf\u8fdb\u884cng-hide\u7c7b\u5207\u6362\u7684\u90e8\u5206\u3002<\/p>\n
@<\/span>Input<\/span>(<\/span>'<\/span>myHide<\/span>'<\/span>)<\/span> set<\/span> value<\/span>(<\/span>val<\/span>:<\/span> boolean<\/span>)<\/span> {<\/span>\r\n this<\/span>.<\/span>renderer<\/span>.<\/span>setElementClass<\/span>(<\/span>this<\/span>.<\/span>el<\/span>,<\/span> '<\/span>ng-hide<\/span>'<\/span>,<\/span> val<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u5982\u679cIgnoreInput\uff0c\u5219\u901a\u8fc7setValue\uff08val\uff1aboolean\uff09{}\u5b9a\u4e49\u4e86value\u5c5e\u6027\u7684setter\u3002\u5728setter\u5185\u90e8\uff0c\u6839\u636e\u63a5\u6536\u5230\u7684\u503c\uff0c\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u4e0a\u7684ng-hide\u7c7b\u3002<\/p>\n
\u4e3a\u4e86\u5728Angular2\u4e2d\u5b9e\u73b0\u670d\u52a1\u5668\u7aef\u548cWeb Worker\u7684\u6e32\u67d3\uff0c\u4e0d\u63a8\u8350\u76f4\u63a5\u64cd\u4f5cDOM\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5148\u524d\u5728\u6784\u9020\u51fd\u6570\u4e2d\u63a5\u6536\u5230\u7684ElementRef\u548cRenderer\u6765\u95f4\u63a5\u64cd\u4f5cDOM\u3002<\/p>\n
\u7528\u88c5\u9970\u5668\u5b9e\u73b0<\/h2>\n
\u5269\u4e0b\u7684@Input\u90e8\u5206\u662f\u5bf9\u5e94\u4e8eAngular1\u4e2d\u7684scope.$watch\u90e8\u5206\u3002<\/p>\n
\u4e3a\u4e86\u7406\u89e3\u8fd9\u90e8\u5206\u5185\u5bb9\uff0c\u9700\u8981\u89e3\u91ca\u4e00\u4e0b\u7c7b\u4f3c\u4e8e@XXX\u8fd9\u6837\u7684\u5199\u6cd5\u3002\u8fd9\u662f\u4e00\u79cd\u53eb\u4f5cTypeScript\u7684\u88c5\u9970\u5668\u7684\u673a\u5236\u3002
\n\u901a\u8fc7\u5728\u7c7b\u3001\u65b9\u6cd5\u6216\u8005\u5c5e\u6027\u7684\u5b9a\u4e49\u4e4b\u524d\u4f7f\u7528\u5b83\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed9\u8fd9\u4e9b\u5bf9\u8c61\u9644\u52a0\u6216\u8005\u6269\u5c55\u5143\u4fe1\u606f\u7684\u80fd\u529b\u3002\u5728Angular2\u4e2d\u7ecf\u5e38\u4f7f\u7528\u8fd9\u79cd\u5199\u6cd5\uff0c\u4e00\u5f00\u59cb\u53ef\u80fd\u4f1a\u6709\u4e9b\u8ff7\u60d1\uff0c\u4f46\u662f\u4e00\u65e6\u660e\u767d\u4e86\u8fd9\u662f\u5b9a\u4e49\u5143\u4fe1\u606f\u7684\u65b9\u5f0f\uff0c\u5c31\u4f1a\u53d8\u5f97\u8f7b\u677e\u3002<\/p>\n
@Input(‘myHide’) \u4e3a value \u5c5e\u6027\u63d0\u4f9b\u4e86\u7528\u4e8e\u5c5e\u6027\u7ed1\u5b9a\u7684\u5143\u4fe1\u606f\u3002\u8fd9\u6837\uff0c\u5f53 myHide \u7684\u5c5e\u6027\u540d\u79f0\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u8be5 setter \u5c06\u88ab\u8c03\u7528\uff0c\u4ece\u800c\u5b9e\u73b0\u5728\u5143\u7d20\u4e0a\u6dfb\u52a0 ng-hide \u7c7b\u7684\u6d41\u7a0b\u3002<\/p>\n
\u6700\u540e\uff0c\u4f7f\u7528@DirectiveDecorator\u7f16\u5199\u6307\u4ee4\u7684\u8bbe\u7f6e\u5373\u53ef\u5b8c\u6210\u3002<\/p>\n
@<\/span>Directive<\/span>({<\/span>\r\n selector<\/span>:<\/span> '<\/span>[myHide]<\/span>'<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n\u8fd9\u4e2a\u6307\u4ee4\u662f\u4f5c\u4e3a\u5c5e\u6027\u4f7f\u7528\u7684\uff0c\u6240\u4ee5\u5728\u9009\u62e9\u5668\u4e2d\u5199\u4e0a[myHide]\u548ccss\u9009\u62e9\u5668\u3002
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\u603b\u7ed3<\/h2>\n\n- \n
\u57fa\u672c\u7684\u306b\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u3060\u3051<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Decorator\u4fbf\u5229<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Binding\u304c\u3072\u3068\u76ee\u307f\u3066\u5206\u304b\u308b\u3088\u3046\u306b\u306a\u3063\u305f<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
DOM\u306f\u89e6\u3089\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
Angular2\u6016\u304f\u306a\u3044<\/ul>\n","protected":false},"excerpt":{"rendered":"\u8fd9\u662fWantedly Advent Calendar 2015\u6d3b\u52a8\u7b2c17\u5929\u7684\u5e16\u5b50\u3002 \u6211\u662fWantedly\u5de5\u7a0b\u5e08 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-39213","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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