這篇文章給大家介紹怎么在微信小程序中實現(xiàn)商品屬性聯(lián)動選擇，內(nèi)容非常詳細(xì)，感興趣的小伙伴們可以參考借鑒，希望對大家能有所幫助。
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1、commodity.xml
{{attrValueObj.attrKey}}
{{value}}
選好了
上述代碼把頁面盒子分為兩部分commodity_attr_list和weui-btn-area。
commodity_attr_list：循環(huán)獲取商品的屬性名和相對應(yīng)的屬性值，并布局頁面。
weui-btn-area：提交校驗并獲取選中商品屬性結(jié)果。
2、commodity.js
數(shù)據(jù)結(jié)構(gòu)
//數(shù)據(jù)結(jié)構(gòu)：以一組一組的數(shù)據(jù)來進行設(shè)定
commodityAttr: [
{
priceId: 1,
price: 35.0,
"stock": 8,
"attrValueList": [
{
"attrKey": "規(guī)格：",
"attrValue": "+免費配料",
"attrCode": "1001"
},
{
"attrKey": "甜度：",
"attrValue": "七分甜",
"attrCode": "2001"
},
{
"attrKey": "加料：",
"attrValue": "珍珠",
"attrCode": "3001"
},
{
"attrKey": "冰塊：",
"attrValue": "少冰",
"attrCode": "4001"
}
]
},
{
priceId: 2,
price: 35.1,
"stock": 9,
"attrValueList": [
{
"attrKey": "規(guī)格：",
"attrValue": "+燕麥",
"attrCode": "1002"
},
{
"attrKey": "甜度：",
"attrValue": "五分甜",
"attrCode": "2002"
},
{
"attrKey": "加料：",
"attrValue": "椰果",
"attrCode": "3002"
},
{
"attrKey": "冰塊：",
"attrValue": "去冰",
"attrCode": "4002"
}
]
},
{
priceId: 3,
price: 35.2,
"stock": 10,
"attrValueList": [
{
"attrKey": "規(guī)格：",
"attrValue": "+布丁",
"attrCode": "1003"
},
{
"attrKey": "甜度：",
"attrValue": "無糖",
"attrCode": "2003"
},
{
"attrKey": "加料：",
"attrValue": "仙草",
"attrCode": "3003"
},
{
"attrKey": "冰塊：",
"attrValue": "常溫",
"attrCode": "4003"
}
]
},
{
priceId: 4,
price: 35.2,
"stock": 10,
"attrValueList": [
{
"attrKey": "規(guī)格：",
"attrValue": "再加一份奶霜",
"attrCode": "1004"
},
{
"attrKey": "甜度：",
"attrValue": "無糖",
"attrCode": "2003"
},
{
"attrKey": "加料：",
"attrValue": "仙草",
"attrCode": "3004"
},
{
"attrKey": "冰塊：",
"attrValue": "熱飲",
"attrCode": "4004"
}
]
},
{
priceId: 5,
price: 35.2,
"stock": 10,
"attrValueList": [
{
"attrKey": "規(guī)格：",
"attrValue": "+免費配料",
"attrCode": "1004"
},
{
"attrKey": "甜度：",
"attrValue": "五分甜",
"attrCode": "2003"
},
{
"attrKey": "加料：",
"attrValue": "椰果",
"attrCode": "3004"
},
{
"attrKey": "冰塊：",
"attrValue": "常溫",
"attrCode": "4004"
}
]
}
],
attrValueList: []
}屬性選中和取消選擇效果處理
onShow: function () {
this.setData({
includeGroup: this.data.commodityAttr
});
this.distachAttrValue(this.data.commodityAttr);
// 只有一個屬性組合的時候默認(rèn)選中
// console.log(this.data.attrValueList);
if (this.data.commodityAttr.length == 1) {
for (var i = 0; i < this.data.commodityAttr[0].attrValueList.length; i++) {
this.data.attrValueList[i].selectedValue = this.data.commodityAttr[0].attrValueList[i].attrValue;
}
this.setData({
attrValueList: this.data.attrValueList
});
}
},
/* 獲取數(shù)據(jù) */
distachAttrValue: function (commodityAttr) {
/**
將后臺返回的數(shù)據(jù)組合成類似
{
attrKey:'型號',
attrValueList:['1','2','3']
}
*/
// 把數(shù)據(jù)對象的數(shù)據(jù)（視圖使用），寫到局部內(nèi)
var attrValueList = this.data.attrValueList;
// 遍歷獲取的數(shù)據(jù)
for (var i = 0; i < commodityAttr.length; i++) {
for (var j = 0; j < commodityAttr[i].attrValueList.length; j++) {
var attrIndex = this.getAttrIndex(commodityAttr[i].attrValueList[j].attrKey, attrValueList);
// console.log('屬性索引', attrIndex);
// 如果還沒有屬性索引為-1，此時新增屬性并設(shè)置屬性值數(shù)組的第一個值；索引大于等于0，表示已存在的屬性名的位置
if (attrIndex >= 0) {
// 如果屬性值數(shù)組中沒有該值，push新值；否則不處理
if (!this.isValueExist(commodityAttr[i].attrValueList[j].attrValue, attrValueList[attrIndex].attrValues)) {
attrValueList[attrIndex].attrValues.push(commodityAttr[i].attrValueList[j].attrValue);
}
} else {
attrValueList.push({
attrKey: commodityAttr[i].attrValueList[j].attrKey,
attrValues: [commodityAttr[i].attrValueList[j].attrValue]
});
}
}
}
// console.log('result', attrValueList)
for (var i = 0; i < attrValueList.length; i++) {
for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
if (attrValueList[i].attrValueStatus) {
attrValueList[i].attrValueStatus[j] = true;
} else {
attrValueList[i].attrValueStatus = [];
attrValueList[i].attrValueStatus[j] = true;
}
}
}
this.setData({
attrValueList: attrValueList
});
},
getAttrIndex: function (attrName, attrValueList) {
// 判斷數(shù)組中的attrKey是否有該屬性值
for (var i = 0; i < attrValueList.length; i++) {
if (attrName == attrValueList[i].attrKey) {
break;
}
}
return i < attrValueList.length ? i : -1;
},
isValueExist: function (value, valueArr) {
// 判斷是否已有屬性值
for (var i = 0; i < valueArr.length; i++) {
if (valueArr[i] == value) {
break;
}
}
return i < valueArr.length;
},
/* 選擇屬性值事件 */
selectAttrValue: function (e) {
/*
點選屬性值，聯(lián)動判斷其他屬性值是否可選
{
attrKey:'型號',
attrValueList:['1','2','3'],
selectedValue:'1',
attrValueStatus:[true,true,true]
}
console.log(e.currentTarget.dataset);
*/
var attrValueList = this.data.attrValueList;
var index = e.currentTarget.dataset.index;//屬性索引
var key = e.currentTarget.dataset.key;
var value = e.currentTarget.dataset.value;
if (e.currentTarget.dataset.status || index == this.data.firstIndex) {
if (e.currentTarget.dataset.selectedvalue == e.currentTarget.dataset.value) {
// 取消選中
this.disSelectValue(attrValueList, index, key, value);
} else {
// 選中
this.selectValue(attrValueList, index, key, value);
}
}
},
/* 選中 */
selectValue: function (attrValueList, index, key, value, unselectStatus) {
// console.log('firstIndex', this.data.firstIndex);
var includeGroup = [];
if (index == this.data.firstIndex && !unselectStatus) { // 如果是第一個選中的屬性值，則該屬性所有值可選
var commodityAttr = this.data.commodityAttr;
// 其他選中的屬性值全都置空
// console.log('其他選中的屬性值全都置空', index, this.data.firstIndex, !unselectStatus);
for (var i = 0; i < attrValueList.length; i++) {
for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
attrValueList[i].selectedValue = '';
}
}
} else {
var commodityAttr = this.data.includeGroup;
}
// console.log('選中', commodityAttr, index, key, value);
for (var i = 0; i < commodityAttr.length; i++) {
for (var j = 0; j < commodityAttr[i].attrValueList.length; j++) {
if (commodityAttr[i].attrValueList[j].attrKey == key && commodityAttr[i].attrValueList[j].attrValue == value) {
includeGroup.push(commodityAttr[i]);
}
}
}
attrValueList[index].selectedValue = value;
// 判斷屬性是否可選
for (var i = 0; i < attrValueList.length; i++) {
for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
attrValueList[i].attrValueStatus[j] = false;
}
}
for (var k = 0; k < attrValueList.length; k++) {
for (var i = 0; i < includeGroup.length; i++) {
for (var j = 0; j < includeGroup[i].attrValueList.length; j++) {
if (attrValueList[k].attrKey == includeGroup[i].attrValueList[j].attrKey) {
for (var m = 0; m < attrValueList[k].attrValues.length; m++) {
if (attrValueList[k].attrValues[m] == includeGroup[i].attrValueList[j].attrValue) {
attrValueList[k].attrValueStatus[m] = true;
}
}
}
}
}
}
// console.log('結(jié)果', attrValueList);
this.setData({
attrValueList: attrValueList,
includeGroup: includeGroup
});
var count = 0;
for (var i = 0; i < attrValueList.length; i++) {
for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
if (attrValueList[i].selectedValue) {
count++;
break;
}
}
}
if (count < 2) {// 第一次選中，同屬性的值都可選
this.setData({
firstIndex: index
});
} else {
this.setData({
firstIndex: -1
});
}
},
/* 取消選中 */
disSelectValue: function (attrValueList, index, key, value) {
var commodityAttr = this.data.commodityAttr;
attrValueList[index].selectedValue = '';
// 判斷屬性是否可選
for (var i = 0; i < attrValueList.length; i++) {
for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
attrValueList[i].attrValueStatus[j] = true;
}
}
this.setData({
includeGroup: commodityAttr,
attrValueList: attrValueList
});
for (var i = 0; i < attrValueList.length; i++) {
if (attrValueList[i].selectedValue) {
this.selectValue(attrValueList, i, attrValueList[i].attrKey, attrValueList[i].selectedValue, true);
}
}
}結(jié)果提交
submit: function () {
var value = [];
for (var i = 0; i < this.data.attrValueList.length; i++) {
if (!this.data.attrValueList[i].selectedValue) {
break;
}
value.push(this.data.attrValueList[i].selectedValue);
}
if (i < this.data.attrValueList.length) {
wx.showToast({
title: '請選擇完整！',
icon: 'loading',
duration: 1000
})
} else {
var valueStr = "";
for(var i = 0;i < value.length;i++){
console.log(value[i]);
valueStr += value[i]+",";
}
wx.showModal({
title: '提示',
content: valueStr,
success: function (res) {
if (res.confirm) {
console.log('用戶點擊確定')
} else if (res.cancel) {
console.log('用戶點擊取消')
}
}
})
console.log(valueStr);
}
}3、commodity.wxss
.title {
padding: 10rpx 20rpx;
margin: 10rpx 0;
border-left: 4rpx solid #ccc;
}
/*全部屬性的主盒子*/
.commodity_attr_list {
background: #fff;
padding: 0 20rpx;
font-size: 26rpx;
overflow: hidden;
width: 100%;
}
/*每組屬性的主盒子*/
.attr_box {
width: 100%;
overflow: hidden;
border-bottom: 1rpx solid #ececec;
display: flex;
flex-direction: column;
}
/*屬性名*/
.attr_name {
width: 20%;
float: left;
padding: 15rpx 0;
}
/*屬性值*/
.attr_value_box {
width: 80%;
float: left;
padding: 15rpx 0;
overflow: hidden;
}
/*每個屬性值*/
.attr_value {
float: left;
padding: 0 30rpx;
margin: 10rpx 10rpx;
border: 1rpx solid #ececec;
border-radius:5px;
line-height:30px;
}
/*每個屬性選中的當(dāng)前樣式*/
.attr_value_active {
border-radius: 10rpx;
color: #0089dc;
padding: 0 30rpx;
border: 1rpx solid #0089dc;
/* background: #fff; */
}
/*禁用屬性*/
.attr_value_disabled {
color: #ccc;
}
/*button*/
.weui-btn-area {
margin: 1.17647059em 15px 0.3em;
}
.weui-btn{
width: 80%;
height: 100rpx;
border-radius: 3rpx;
background-color:#0089dc;
color: #fff;
}關(guān)于怎么在微信小程序中實現(xiàn)商品屬性聯(lián)動選擇就分享到這里了，希望以上內(nèi)容可以對大家有一定的幫助，可以學(xué)到更多知識。如果覺得文章不錯，可以把它分享出去讓更多的人看到。
本文名稱：怎么在微信小程序中實現(xiàn)商品屬性聯(lián)動選擇
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