我使用的最新版本4.0.0离子的我试图更新按钮点击滑块的内容,但不更新内容的打字稿代码改变甚至数组值。在这里我们我的视图代码:
<ion-slides class="main-slide" pager=true loop="true" #mainSlider [options]="mainSliderOpts">
<ion-slide class="change-display" *ngFor="let product of products;">
<div class="item-container">
<div class="strike-title">Strike Price</div>
<div class="devider"></div>
<p class="description">
To at least what price do you think the stock will move from its current price if
<strong>${{product.price}}</strong>?
</p>
<div class="lose" [ngClass]="{ 'profit': product.profit > 0,'lose': product.profit < 0 }">
<span *ngIf="product.profit > 0">+</span>{{product.profit}}%
</div>
<div class="price-contract">
PRICE PER CONTRACT: <strong>${{product.contractPrice}}</strong>
</div>
<ion-button class="next-btn" (click)=priceSliderChanged() expand="full" color="dark">Change Values</ion-button>
</div>
</ion-slide>
这里是我的打字稿代码:
constructor() {
this.products = [{
title: 'NFLX',
price: 313.2,
prices: [
297.50,
295.00,
292.75,
290.75
],
profit: 4,
contractPrice: 400 //defalt price
},
{
title: 'NFLX 1',
price: 413.2,
prices: [
297.50,
295.00,
292.75,
290.75
],
profit: -6.6,
contractPrice: 500 //defalt price
},
{
title: 'NFLX 2',
price: 213.2,
prices: [
297.50,
295.00,
292.75,
290.75
],
profit: -7,
contractPrice: 300 //defalt price
}
]
}
priceSliderChanged(){
this.mainSlider.getActiveIndex().then((index) => {
var activeProduct = this.products[index];
activeProduct.profit = this.randomIntFromInterval(-5, 6);
activeProduct.contractPrice = this.randomIntFromInterval(350, 460);
//setTimeout(()=>{
this.mainSlider.update().then((d: any) => {
// alert(d);
});
});
}
正如你所看到contractPrice成功地改变,如果我安慰,但在“价格合同” DIV没有改变。
谢谢你的帮助。
我不知道这是否与你,但离子4测试版我有同样的问题的情况下,因为从1 getActiveIndex()
回报指数而不是从0开始,例如,如果第一张幻灯片有效时,它会返回1,而不是0。
因此,尝试改变这种代码:
priceSliderChanged() {
this.mainSlider.getActiveIndex().then((index) => {
index-=1; //add this code
var activeProduct = this.products[index];
activeProduct.profit = this.randomIntFromInterval(-5, 6);
activeProduct.contractPrice = this.randomIntFromInterval(350, 460);
});
}
希望这可以帮助。