discount.js
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// pack-checkout/components/discount.js
import util from '../../utils/util'
import App from '../../utils/uri'
Component({
/**
* 组件的属性列表
*/
properties: {
checkout:Object,
},
/**
* 组件的初始数据
*/
data: {
checkedNum:0,
display:false,
},
observers: {
'checkout': function(checkout) {
if(!checkout) return;
let num=0;
checkout.discount.forEach(q=>{
if(q.checked){
num++;
}
})
this.setData({
checkedNum:num,
})
}
},
/**
* 组件的方法列表
*/
methods: {
show(){
this.setData({
display:true,
})
},
hide(){
this.setData({
display:false,
})
},
discountChecked(e){
console.log('discountChecked',e)
let index=util.attr(e,'index')
let discount=this.data.checkout.discount
let checked=discount[index].checked
discount[index].checked=!discount[index].checked
if(checked) {
let subsidy_price=(this.data.checkout.subsidy_price/1 - discount[index].price/1).toFixed(2)
this.setData({
[`checkout.subsidy_price`]: subsidy_price,
[`checkout.discount`]: discount,
checkedNum:this.data.checkedNum-1,
})
}else{
let subsidy_price=(this.data.checkout.subsidy_price/1 + discount[index].price/1).toFixed(2)
this.setData({
[`checkout.subsidy_price`]: subsidy_price,
[`checkout.discount`]: discount,
checkedNum:this.data.checkedNum+1,
})
}
},
}
})