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Home WeChat Applet Mini Program Development Implementation of product attribute classification in WeChat mini program mall project

Implementation of product attribute classification in WeChat mini program mall project

Jun 27, 2018 pm 03:06 PM
Mall WeChat applet

This article mainly introduces the product attribute value linkage selection of the WeChat mini program mall project in detail. It has a certain reference value. Interested friends can refer to

Continuation of the previous article Article: Addition and Subtraction of Shopping Quantity in WeChat Mini Program

The addition and subtraction of shopping quantity mentioned in

, now let’s talk about the linkage selection of product attribute value.

In order to give students an intuitive understanding, I went to the e-commerce website and took a picture, which is the part shown in the red circle


Now I will introduce this small component to you. In the small program, how to write

The picture below is the picture of this project:


##wxml:

<view class="title">商品屬性值聯(lián)動選擇</view> 
<!--options--> 
<view class="commodity_attr_list"> 
 <!--每組屬性--> 
 <view class="attr_box" wx:for="{{attrValueList}}" wx:for-item="attrValueObj" wx:for-index="attrIndex"> 
 <!--屬性名--> 
 <view class="attr_name">{{attrValueObj.attrKey}}</view> 
 <!--屬性值--> 
 <view class="attr_value_box"> 
 <!--每個屬性值--> 
 <view class="attr_value {{attrIndex==firstIndex || attrValueObj.attrValueStatus[valueIndex]?(value==attrValueObj.selectedValue?&#39;attr_value_active&#39;:&#39;&#39;):&#39;attr_value_disabled&#39;}}" bindtap="selectAttrValue" data-status="{{attrValueObj.attrValueStatus[valueIndex]}}" 
 data-value="{{value}}" data-key="{{attrValueObj.attrKey}}" data-index="{{attrIndex}}" data-selectedvalue="{{attrValueObj.selectedValue}}" wx:for="{{attrValueObj.attrValues}}" wx:for-item="value" wx:for-index="valueIndex">{{value}}</view> 
 </view> 
 </view> 
</view> 
<!--button--> 
<view class="weui-btn-area"> 
 <button class="weui-btn" type="primary" bindtap="submit">確定</button> 
</view>


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; 
} 
/*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 10rpx; 
 margin: 0 10rpx; 
 border: 1rpx solid #ececec; 
} 
/*每個屬性選中的當前樣式*/ 
.attr_value_active { 
 background: #FFCC00; 
 border-radius: 10rpx; 
 color: #fff; 
 padding: 0 10rpx; 
} 
/*禁用屬性*/ 
.attr_value_disabled { 
 color: #ccc; 
} 
 
/*button*/ 
.btn-area { 
 margin: 1.17647059em 15px 0.3em; 
} 
 
.btn { 
 margin-top: 15px; 
 background-color:#FFCC00; 
 color: #fff; 
} 
.btn:first-child { 
 margin-top: 0; 
}


js:

In the data part, data is generally obtained through the access interface. Network access is not used here. In order to simplify the demo, a set of data is directly placed in the data object.

Page({ 
 data: { 
 firstIndex: -1, 
 //準備數(shù)據(jù) 
 //數(shù)據(jù)結構:以一組一組來進行設定 
 commodityAttr: [ 
 { 
 priceId: 1, 
 price: 35.0, 
 "stock": 8, 
 "attrValueList": [ 
 { 
 "attrKey": "型號", 
 "attrValue": "2" 
 }, 
 { 
 "attrKey": "顏色", 
 "attrValue": "白色" 
 }, 
 { 
 "attrKey": "大小", 
 "attrValue": "小" 
 }, 
 { 
 "attrKey": "尺寸", 
 "attrValue": "S" 
 } 
 ] 
 }, 
 { 
 priceId: 2, 
 price: 35.1, 
 "stock": 9, 
 "attrValueList": [ 
 { 
 "attrKey": "型號", 
 "attrValue": "1" 
 }, 
 { 
 "attrKey": "顏色", 
 "attrValue": "黑色" 
 }, 
 { 
 "attrKey": "大小", 
 "attrValue": "小" 
 }, 
 { 
 "attrKey": "尺寸", 
 "attrValue": "M" 
 } 
 ] 
 }, 
 { 
 priceId: 3, 
 price: 35.2, 
 "stock": 10, 
 "attrValueList": [ 
 { 
 "attrKey": "型號", 
 "attrValue": "1" 
 }, 
 { 
 "attrKey": "顏色", 
 "attrValue": "綠色" 
 }, 
 { 
 "attrKey": "大小", 
 "attrValue": "大" 
 }, 
 { 
 "attrKey": "尺寸", 
 "attrValue": "L" 
 } 
 ] 
 }, 
 { 
 priceId: 4, 
 price: 35.2, 
 "stock": 10, 
 "attrValueList": [ 
 { 
 "attrKey": "型號", 
 "attrValue": "1" 
 }, 
 { 
 "attrKey": "顏色", 
 "attrValue": "綠色" 
 }, 
 { 
 "attrKey": "大小", 
 "attrValue": "大" 
 }, 
 { 
 "attrKey": "尺寸", 
 "attrValue": "L" 
 } 
 ] 
 } 
 ], 
 attrValueList: [] 
 }, 
 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:&#39;型號&#39;, 
 attrValueList:[&#39;1&#39;,&#39;2&#39;,&#39;3&#39;] 
 } 
 */ 
 // 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(&#39;屬性索引&#39;, attrIndex); 
 // 如果還沒有屬性索引為-1,此時新增屬性并設置屬性值數(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(&#39;result&#39;, 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:&#39;型號&#39;, 
 attrValueList:[&#39;1&#39;,&#39;2&#39;,&#39;3&#39;], 
 selectedValue:&#39;1&#39;, 
 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(&#39;firstIndex&#39;, 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(&#39;其他選中的屬性值全都置空&#39;, 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 = &#39;&#39;; 
 } 
 } 
 } else { 
 var commodityAttr = this.data.includeGroup; 
 } 
 
 // console.log(&#39;選中&#39;, 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(&#39;結果&#39;, 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 = &#39;&#39;; 
 
 // 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); 
 } 
 } 
 }, 
 /* 點擊確定 */ 
 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: &#39;請完善屬性&#39;, 
 icon: &#39;loading&#39;, 
 duration: 1000 
 }) 
 } else { 
 wx.showToast({ 
 title: &#39;選擇的屬性:&#39; + value.join(&#39;-&#39;), 
 icon: &#39;sucess&#39;, 
 duration: 1000 
 }) 
 } 
 } 
})

Operation effect:

The above is the entire content of this article, I hope it will be useful for everyone’s learning For help, please pay attention to the PHP Chinese website for more related content!

Related recommendations:

The effect of sidebar classification in the WeChat mini program mall

WeChat mini program mall project Shopping quantity addition and subtraction

Tools required for WeChat mini program shopping mall system development

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