<template>
<div class="login">
<div class="item" v-for="(item,index) in dataList" :key="index">
<input @change="change(index,item.checked)" type="checkbox" :checked="item.checked" />
{{item.name}},单价{{item.price}}个数{{item.num}}
</div>
<div class="item">
<input type="checkbox" @change="changeAll" :checked="allChecked" />
全选，总数量{{count}}总价格{{money}}
</div>
</div>
</template>
<script>
export default {
name: "login",
data() {
return {
dataList: [
{ id: 1, name: "苹果", price: 4, num: 4 },
{ id: 2, name: "香蕉", price: 3, num: 2 },
{ id: 3, name: "梨", price: 3, num: 2 },
{ id: 4, name: "西红柿", price: 2, num: 11 },
],
allChecked: false,
count: 0,
money: 0,
};
},
methods: {
changeAll() {
this.count = 0;
this.money = 0;
for (var i = 0; i < this.dataList.length; i++) {
this.$set(this.dataList[i], "checked", false);
}
if (this.allChecked) {
this.allChecked = false;
this.count = 0;
this.money = 0;
} else {
this.allChecked = true;
for (var j = 0; j < this.dataList.length; j++) {
this.count += Number(this.dataList[j].num);
this.money +=
Number(this.dataList[j].num) * Number(this.dataList[j].price);
this.$set(this.dataList[j], "checked", true);
}
}
},
change(index, checked) {
this.count = 0;
this.money = 0;
console.log(checked,887)
if (!checked) {
this.$set(this.dataList[index], "checked", true);
} else {
this.$set(this.dataList[index], "checked", false);
}
this.$nextTick(() => {
for (var j = 0; j < this.dataList.length; j++) {
if (this.dataList[j].checked) {
this.count += Number(this.dataList[j].num);
this.money +=
Number(this.dataList[j].num) * Number(this.dataList[j].price);
}
}
if (this.dataList.every((item) => item.checked == true)) {
this.allChecked = true;
} else {
this.allChecked = false;
}
});
},
},
};
</script>
<style lang="scss">
.login {
margin: 100px;
}
.item {
display: flex;
}
</style>
