reserved hunterlord

## index.md

      
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                hunterlord
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              Last active
              October 18, 2017 09:54
            
              
                简单语法实现一个pipe函数
              
          
    export let pipe = (data, filters) => {
  (typeof filters === 'function' ? [filters] : filters).map(
    filter =>
      data = typeof filter === 'string' ? pipe[filter](data) : filter(data)
  );
  return data;
};

// 设置第一个默认管道

  
## gist:f61237509837dd07a66189c7ed21c334
```typescript

<pre>{{test.value}}</pre>

<button (click)="isVisible = true">Show it</button>
<input #test *ngIf="isVisible">
Then in your component you "grab" the test element like this:

private test: ViewContainerRef;
@ViewChild('test') set someDummySetterName(theElementRef: ViewContainerRef) {

## gist:72022f9a97a6503829b059490318bebc
```
javascript:var a = document.body.innerHTML;var b = document.createElement('textarea');b.style.width='100%';b.style.height='100vh';b.value = a; document.body.innerHTML = ''; document.body.appendChild(b);
```
	```typescript

	<pre>{{test.value}}</pre>

	<button (click)="isVisible = true">Show it</button>
	<input #test *ngIf="isVisible">
	Then in your component you "grab" the test element like this:

	private test: ViewContainerRef;
	@ViewChild('test') set someDummySetterName(theElementRef: ViewContainerRef) {
	```
	javascript:var a = document.body.innerHTML;var b = document.createElement('textarea');b.style.width='100%';b.style.height='100vh';b.value = a; document.body.innerHTML = ''; document.body.appendChild(b);
	```