angular 2 - how to set <select> default selected option

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陌清茗
陌清茗 2021-02-12 08:23

My template is like this


How can I set optio

2条回答
  •  不知归路
    2021-02-12 09:03

    The old pure HTML way simply works with Angular2, if you do not want to do anything dynamically:

    
    

    But the following is the Angular 2 way which allows you to dynamically assign selected value, which may be the practical and common use case: (You need to import FormsModule)

    
    

    and in your component class

    selectedValue = 'AM'; // You may assign 'AM or 'PM' dynamically here
    

    The following links may be useful:

    https://angular.io/api/forms/NgSelectOption

    https://angular.io/api/forms/NgModel

    The above mentioned Angular 2 method is template driven forms method. There is another way of doing the same which is reactive forms approach described bellow: (You need to import ReactiveFormsModule)

     
    

    and in your component class

    control = new FormControl('AM');
    

    The following link may be useful:

    https://angular.io/api/forms/FormControlDirective

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