typescript Angular4 - 如何动态设置选择选项值
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时间：2020-10-21 04:54:01 来源:igfitidea点击:
Angular4 - How to set select option value dynamically
提问by Vipul Sharma
I have a select list with the code -
我有一个带有代码的选择列表 -
<select (change)='onGroupChange($event)'>
<option *ngFor="let group of groups" value={{group.group_name}}>
{{group.group_name}}
</option>
</select>
Now I have a group name value saved as a different variable and I want to set that as the select list value if it matches any.
现在我有一个组名值保存为不同的变量，如果它匹配任何值，我想将其设置为选择列表值。
采纳答案by Michael
<select (change)='onGroupChange($event)'>
<option *ngFor="let group of groups" value={{group.group_name}} [selected]="group.group_name==myVariable">
{{group.group_name}}
</option>
</select>
回答by Hui Shi
<select [(ngModel)]="selectedGroup" (ngModelChange)="onGroupChange($event)">
<option *ngFor="let group of groups" [value]="group.group_name">
{{group.group_name}}
</option>
</select>
