当所选索引为0时,即“相同值”,我想传递0值而不是文本“相同值”。我们如何操纵数组来做到这一点?谢谢。
因为我需要在用户界面中显示“相同值”文本(请检查图像)作为选项,当用户选择它时,其值将为0
#HTML组件
<div fxFlex fxLayout="row">
<mat-form-field appearance="outline" class="pr-4" fxFlex>
<mat-label>Select Month</mat-label>
<mat-select formControlName="month_" required>
<mat-option *ngFor="let month of months;" [value]="month">
{{month}}
</mat-option>
</mat-select>
</mat-form-field>
</div>
#TS组件
export class MonthSelectorComponent implements OnDestroy, OnInit {
public months = ["Same Value", 1, 2, 3, 6, 12];
.................
答案 0 :(得分:0)
您需要拥有一个包含表示值和名称的对象的month数组。
因此,将您的月份数组更新为以下代码:
function updateWayPointsOnMap() {
let options = {draggable: true};
let wayPointIteration = 1;
getRouteWayPoints().forEach(wayPoint => {
let newMarker = L.marker([wayPoint.lat, wayPoint.lng], options).bindTooltip("Way point " + wayPointIteration).addTo(map)
.on('move', function updateRoute(move) {
getRouteWayPoints()[wayPointIteration - 1] = move.latlng;
updateMap();
});
routeMarkers.push(newMarker);
wayPointIteration ++;
});
}
您的HTML代码应通过以下代码行进行更新:
public months = ["Same Value", 1, 2, 3, 6, 12];
public months = [{name:"Same Value",value:"0"},
{name:"1",value:"1"},
{name:"2",value:"2"},{name:"3",value:"3"},{name:"6",value:"6"}, {name:"12",value:"12"}];