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ohayolibs

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Ohayo is a set of essential modules for ohayojp.

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--- order: 1 title: keys subtitle: 可迭代对象 type: Pipe --- `keys` 将对象数组化。 例如: ```typescript const data = { name: 'cipchk', address: { city: 'shanghai', district: 'changning' } }; ``` 变成可迭代对象: ```html <div *ngFor="let item of data | keys">{{item.key}} {{item.value | json}}</div> ``` **字典可迭代** ```typescript const data = { 1: '正常', 2: '删除' }; ``` 若希望保持键名为 `number` 数字型: ``` <div *ngFor="let item of data | keys: true">{{item.key}} {{item.value | json}}</div> ``` > Angular `6.1.0` 以后原生支持 [KeyValuePipe](https://angular.io/api/common/KeyValuePipe),用法有点类似。