前言: 如果需要实现进来进行给按钮加上买一送一的样式,或者单击就选中单个按钮,只能靠css结合js进行控制了,小程序暂时没有这样的控件。 实现效果图: 微信小程序进来的时候自动进行按钮样式的初始化,这个需要一个字段做判断,加上正则表达式wxml文件: <block wx:for="{{liuliangItems}}"> <block wx:if="{{item.one2one == 1}}"> <button class="{{item.changeColor?'selected2':'selected1'}}" type="default" id="{{item.price}}" data-id="{{item.name}}" data-one="{{item.one2one}}" data-orderid="{{item.id}}" data-number="1" bindtap="setPrice">{{item.name}}</button> </block> <block wx:else> <button class="{{item.changeColor?'selected':'normal'}}" type="default" id="{{item.price}}" data-id="{{item.name}}" data-one="{{item.one2one}}" data-orderid="{{item.id}}" data-number="1" bindtap="setPrice">{{item.name}}</button> </block> </block> wxss文件 .normal{ box-sizing: border-box; flex: 0 0 21%; margin: 5px 5px; height: 50px; color:#1aad19; border:1px solid #1aad19; background-color:transparent; } .selected{ box-sizing: border-box; flex: 0 0 21%; margin: 5px 5px; height: 50px; background-color: #F75000; color: white; } .selected1{ box-sizing: border-box; flex: 0 0 21%; margin: 5px 5px; height: 50px; background-color: transparent; border:1px solid #1aad19; color:#1aad19; background-image: url(https://wxcx.llzt.net/images/hot.png) ; background-position:31px 0px; background-repeat:no-repeat; background-size:62%; } .selected2{ box-sizing: border-box; flex: 0 0 21%; margin: 5px 5px; height: 50px; background-color: #F75000; color: white; background-image: url(https://wxcx.llzt.net/images/hot.png); background-position:31px 0px; background-repeat:no-repeat; background-size:62%; } 现在的方法把集合进行循环,然后获取当前点击的这个按钮进行比较,然后进行样式的修改 for (var i = 0; i < this.data.liuliangItems.length; i++) { if (e.target.dataset.orderid == this.data.liuliangItems[i].id) { txtArray1[i] = { id: this.data.liuliangItems[i].id, changeColor: true, price: this.data.liuliangItems[i].price, name: this.data.liuliangItems[i].name, one2one: this.data.liuliangItems[i].one2one } } else { txtArray1[i] = { id: this.data.liuliangItems[i].id, changeColor: false, price: this.data.liuliangItems[i].price, name: this.data.liuliangItems[i].name, one2one: this.data.liuliangItems[i].one2one } } } |
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