我正在编写一个angular2组件,并且面临着这个问题。
说明:当触发(change)
事件时,我希望将选择选择器中的选项值推送到其处理程序。
例如下面的模板:
<select (change)="onItemChange(<!--something to push-->)">
<option *ngFor="#value of values" value="{{value.key}}">{{value.value}}</option>
</select>
组件类:
export Class Demo{
private values = [
{
key:"key1",
value:"value1"
},
{
key:"key2",
value:"value2"
}
]
constructor(){}
onItemChange(anyThing:any){
console.log(anyThing); //Here I want the changed value
}
}
如何获取值(不使用jquery)?
发布于 2016-01-28 15:28:10
有一种方法可以从不同的选项中获取值。检查此plunker
component.html
<select class="form-control" #t (change)="callType(t.value)">
<option *ngFor="#type of types" [value]="type">{{type}}</option>
</select>
component.ts
this.types = [ 'type1', 'type2', 'type3' ];
callType(value) {
console.log(value);
this.order.type = value;
}
发布于 2017-05-29 16:00:06
在angular 4中,这对我很有效。
template.html
<select (change)="filterChanged($event.target.value)">
<option *ngFor="let type of filterTypes" [value]="type.value">{{type.display}}
</option>
</select>
component.ts
export class FilterComponent implements OnInit {
selectedFilter:string;
public filterTypes = [
{ value: 'percentage', display: 'percentage' },
{ value: 'amount', display: 'amount' }
];
constructor() {
this.selectedFilter = 'percentage';
}
filterChanged(selectedValue:string){
console.log('value is ', selectedValue);
}
ngOnInit() {
}
}
发布于 2016-01-28 15:43:20
签出此有效的Plunker
<select (change)="onItemChange($event.target.value)">
<option *ngFor="#value of values" [value]="value.key">{{value.value}}</option>
</select>
https://stackoverflow.com/questions/35055088
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