this.state = {
countId: [
{id: 'id-1', quantity: 1},
{id: 'id-2', quantity: 5}
]
}
this.setState({
countId: {
...this.state.countId, countId: Object.assign({},{id:(event.currentTarget.id), quantity:1})
}
})
// clone = пустой объект + все свойства user
let clone = Object.assign({}, user);
{'id1', quantity: 1}
prevState.countId.quantityId.forEach(i => i? i.quantity < 99999 : null)
<div onChange={this.QuantityChange}>
.slider__item {
color: #fff;
text-align: center;
padding: 70px 10px;
}
.slider__item a {
width: 100%;
height: 100%;
display: block;
}
.slider__item-title {
margin: 10px 0 7px;
font-size: 25px;
font-weight: 500;
}
.a {
width: 100%;
height: 100%;
display: block;
}