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从Angular外部更改Angular2材质组件(例如选择控制器)

[英]Change Angular2 Material Component ( e.g. Select controller ) outside from Angular

If it is possible... 如果可能的话...

I have a site: www.recognitiongame.com I have started to use Angular2 Material Components ( Autocomplete, Button... ). 我有一个网站:www.recognitiongame.com我已经开始使用Angular2材质组件(Autocomplete,Button ...)。

I want to change the "Main theme:" DropDownlist to Angular2 Material Select Component. 我想将“主主题:” DropDownlist更改为Angular2材质选择组件。

I have this: 我有这个:

<mat-select placeholder="Main theme:" [(ngModel)]="selectedValue">
 <mat-option *ngFor="let maintheme of mainthemes" [value]="maintheme.id">
  {{ maintheme.value }}
</mat-option>   

How can I access the Angular2 Component "selectedValue" variable from outside? 如何从外部访问Angular2组件的“ selectedValue”变量? Something like this: 像这样:

<html>
<body>
<my-app></my-app>
...
<script type="text/javascript">
 **Change the selectedValue?**
</script>
</body>
</html>
public _selectedValue = window['selectedValue']
public set selectedValue(_selectedValue){
   this._selectedValue = _selectedValue;
   window['selectedValue'] = _selectedValue;
}

public get selectedValue(){
   return this._selectedValue;
}

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