这篇“小程序怎么制作商品列表流式布局”文章的知识点大部分人都不太理解,所以小编给大家总结了以下内容,内容详细,步骤清晰,具有一定的借鉴价值,希望大家阅读完这篇文章能有所收获,下面我们一起来看看这篇“小程序怎么制作商品列表流式布局”文章吧。
流式布局概念
流式布局也叫百分比布局
把元素的宽,高,margin,padding不再用固定数值,改用百分比,
这样元素的宽,高,margin,padding会根据页面的尺寸随时
调整已达到适应当前页面的目的.
先看效果:
如上图所示,为了能够看的更直观一点我给布局设置了红色虚线边框,整体页面根据元素的百分比进行布局。
直接看代码:
xxx.wxml
<scroll-view scroll-y="true" style="height:{{scrollH}}px" bindscrolltolower="loadImages">
<view class="goods" style="width:100%"><view class="mg_item"> <view wx:for="{{col1}}" wx:key="id"> <view class="item_info"><image src="{{item.imageurl}}" style="width:100%;height:{{item.height}}px"></image> </view><view class="product-name"> {{item.name}}
</view><view class="product-price-wrap"> <p class="product-price-new">¥{{item.newprice}}</p>
<p class="product-price-old">¥{{item.oldprice}}</p>
<p class="discount">{{item.discount}}折</p>
</view> </view></view><view class="mg_item"> <view wx:for="{{col2}}" wx:key="id"> <view class="item_info"><image src="{{item.imageurl}}" style="width:100%;height:{{item.height}}px"></image> </view><view class="product-name"> {{item.name}}
</view><view class="product-price-wrap"> <p class="product-price-new">¥{{item.newprice}}</p>
<p class="product-price-old">¥{{item.oldprice}}</p>
<p class="discount">{{item.discount}}折</p>
</view> </view></view>
</view>
</scroll-view>
<view style="display:none">
<image wx:for="{{images}}" wx:key="id" id="{{item.id}}" src="{{item.imageurl}}" bindload="onImageLoad"></image>
</view>
通过查看class标签发现有两个img_item ,所以采取的是左右分别加载数据方式。
xxx.js
Page({
data: {
scrollH: 0,
imgWidth: 0,
loadingCount: 0,
images: [],
col1: [],
col2: []
},
onLoad: function () {
wx.getSystemInfo({
success: (res) => {
let ww = res.windowWidth;
let wh = res.windowHeight;
let imgWidth = ww * 0.48;
let scrollH = wh;
this.setData({
scrollH: scrollH,
imgWidth: imgWidth
});
//加载首组图片
this.loadImages();
}
})
},
onImageLoad: function (e) {
let imageId = e.currentTarget.id;
let oImgW = e.detail.width; //图片原始宽度
let oImgH = e.detail.height; //图片原始高度
let imgWidth = this.data.imgWidth; //图片设置的宽度
let scale = imgWidth / oImgW; //比例计算
let imgHeight = oImgH * scale; //自适应高度
let images = this.data.images;
let imageObj = null;
for (let i = 0; i < images.length; i++) {
let img = images[i];
if (img.id === imageId) {
imageObj = img;
break;
}
}
imageObj.height = imgHeight;
let loadingCount = this.data.loadingCount - 1;
let col1 = this.data.col1;
let col2 = this.data.col2;
//判断当前图片添加到左列还是右列
if (col1.length <= col2.length) {
col1.push(imageObj);
} else {
col2.push(imageObj);
}
let data = {
loadingCount: loadingCount,
col1: col1,
col2: col2
};
//当前这组图片已加载完毕,则清空图片临时加载区域的内容
if (!loadingCount) {
data.images = [];
}
this.setData(data);
},
loadImages: function () {
let images = [
{
goodId: 0,
name: '泊尔崖蜜蜜光面膜(5片盒装)',
url: 'bill',
imageurl: 'https://a3.vimage1.com/upload/merchandise/pdcvis/2017/08/21/142/fb2960bf8e074d029c24315279289c19-5_218x274_70.jpg',
newprice: "86",
oldprice: "88",
discount: "8.8",
height: 0,
},
{
goodId: 1,
name: '透无瑕矿物养护两用粉饼#03',
url: 'bill',
imageurl: 'https://a.appsimg.com/upload/brand/upcb/2017/10/26/77/ias_150899004322921_604x290_80.jpg!75.webp',
newprice: "147.00",
oldprice: "150.00",
discount: "8.8",
height: 0,
},
{
goodId: 2,
name: '川水水光面膜(5片盒装)',
url: 'bill',
imageurl: 'https://a2.vimage1.com/upload/merchandise/pdcvis/2017/08/21/86/7891361fdab348a1bc91aeca31fc77b1-5_218x274_70.jpg',
newprice: "86.00",
oldprice: "88.00",
discount: "8.8",
height: 0,
},
{
goodId: 3,
name: '蜜三色渐变咬唇膏3.2g 03蜜橙动心恋',
url: 'bill',
imageurl: 'http://a3.vimage1.com/upload/merchandise/pdcvis/2017/08/21/176/c3b9453a4d7f46c6a8fe78705f77352b-5_218x274_70.jpg',
newprice: "97.00",
oldprice: "99.00",
discount: "8.8",
height: 0,
},
{
goodId: 4,
name: '时焕颜亮采套装',
url: 'bill',
imageurl: 'https://a2.vimage1.com/upload/merchandise/pdcvis/2017/08/21/93/69a6bc1c11eb4be184b7dffb43b8565b-5_218x274_70.jpg',
newprice: "398.00",
oldprice: "459.00",
discount: "8.8",
height: 0,
}
];
let baseId = "img-" + (+new Date());
for (let i = 0; i < images.length; i++) {
images[i].id = baseId + "-" + i;
}
this.setData({
loadingCount: images.length,
images: images
});
}
})
如下代码:
**if (col1.length <= col2.length) {
col1.push(imageObj);
} else {
col2.push(imageObj);
}**
检索商品集合根据高度分别放入两个集合中。
xxx.wxss
page{
height: 100%;
background-color: #F3F4F6;
}
/* 单个图片容器的样式 */
.img_item {
width: 48.5%;
margin: 2px;
display: inline-block;
vertical-align: top;
background-color: #ffffff;
font-size: 24rpx;
}
.item_info{
border-top:1px dashed red;
}
.product-name{
color: #000;
/* height: 28px; */
text-align:left;
margin: 0px 5px;
margin-bottom: 5px;
}
.product-price-wrap .product-price-new{
color: #e80080;
margin-left:5px;
font-weight:900;
}
.product-price-wrap .product-price-old{
color: #888;
text-decoration: line-through;
padding-left: 2px;
}
.product-price-wrap .discount{
margin-left: 30px;
background-color: #000;
color: #fff;
}
以上就是关于“小程序怎么制作商品列表流式布局”这篇文章的内容,相信大家都有了一定的了解,希望小编分享的内容对大家有帮助,若想了解更多相关的知识内容,请关注天达云行业资讯频道。