TypeScript query_list.QueryList类代码示例

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本文整理汇总了TypeScript中@angular/core/src/linker/query_list.QueryList类的典型用法代码示例。如果您正苦于以下问题：TypeScript QueryList类的具体用法？TypeScript QueryList怎么用？TypeScript QueryList使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QueryList类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: describe

  describe('QueryList', () => {
    let queryList: QueryList<string>;
    let log: string;
    beforeEach(() => {
      queryList = new QueryList<string>();
      log = '';
    });

    function logAppend(item: any /** TODO #9100 */) { log += (log.length == 0 ? '' : ', ') + item; }

    it('should support resetting and iterating over the new objects', () => {
      queryList.reset(['one']);
      queryList.reset(['two']);
      iterateListLike(queryList, logAppend);
      expect(log).toEqual('two');
    });

    it('should support length', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.length).toEqual(2);
    });

    it('should support map', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.map((x) => x)).toEqual(['one', 'two']);
    });

    it('should support map with index', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.map((x, i) => `${x}_${i}`)).toEqual(['one_0', 'two_1']);
    });

    it('should support forEach', () => {
      queryList.reset(['one', 'two']);
      let join = '';
      queryList.forEach((x) => join = join + x);
      expect(join).toEqual('onetwo');
    });

    it('should support forEach with index', () => {
      queryList.reset(['one', 'two']);
      let join = '';
      queryList.forEach((x, i) => join = join + x + i);
      expect(join).toEqual('one0two1');
    });

    it('should support filter', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.filter((x: string) => x == 'one')).toEqual(['one']);
    });

    it('should support filter with index', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.filter((x: string, i: number) => i == 0)).toEqual(['one']);
    });

    it('should support find', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.find((x: string) => x == 'two')).toEqual('two');
    });

    it('should support find with index', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.find((x: string, i: number) => i == 1)).toEqual('two');
    });

    it('should support reduce', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.reduce((a: string, x: string) => a + x, 'start:')).toEqual('start:onetwo');
    });

    it('should support reduce with index', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.reduce((a: string, x: string, i: number) => a + x + i, 'start:'))
          .toEqual('start:one0two1');
    });

    it('should support toArray', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.reduce((a: string, x: string) => a + x, 'start:')).toEqual('start:onetwo');
    });

    it('should support toArray', () => {
      queryList.reset(['one', 'two']);
      expect(queryList.toArray()).toEqual(['one', 'two']);
    });

    it('should support toString', () => {
      queryList.reset(['one', 'two']);
      const listString = queryList.toString();
      expect(listString.indexOf('one') != -1).toBeTruthy();
      expect(listString.indexOf('two') != -1).toBeTruthy();
    });

    it('should support first and last', () => {
      queryList.reset(['one', 'two', 'three']);
      expect(queryList.first).toEqual('one');
      expect(queryList.last).toEqual('three');
    });

//.........这里部分代码省略.........

开发者ID:AlmogShaul，项目名称:angular，代码行数:101，代码来源:query_list_spec.ts

示例2: it

 it('should support forEach with index', () => {
   queryList.reset(['one', 'two']);
   let join = '';
   queryList.forEach((x, i) => join = join + x + i);
   expect(join).toEqual('one0two1');
 });

开发者ID:AlmogShaul，项目名称:angular，代码行数:6，代码来源:query_list_spec.ts

示例3: it

 it('should support toArray', () => {
   queryList.reset(['one', 'two']);
   expect(queryList.toArray()).toEqual(['one', 'two']);
 });

开发者ID:Cammisuli，项目名称:angular，代码行数:4，代码来源:query_list_spec.ts

注：本文中的@angular/core/src/linker/query_list.QueryList类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。