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。
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:
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<block wx:for="{{liuliangItems}}">
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<block wx:if="{{item.one2one == 1}}">
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<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>
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</block>
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<block wx:else>
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<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>
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</block>
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</block>
复制代码
wxss文件
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.normal{
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box-sizing: border-box;
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flex: 0 0 21%;
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margin: 5px 5px;
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height: 50px;
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color:#1aad19;
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border:1px solid #1aad19;
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background-color:transparent;
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}
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.selected{
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box-sizing: border-box;
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flex: 0 0 21%;
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margin: 5px 5px;
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height: 50px;
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background-color: #F75000;
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color: white;
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}
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.selected1{
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box-sizing: border-box;
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flex: 0 0 21%;
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margin: 5px 5px;
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height: 50px;
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background-color: transparent;
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border:1px solid #1aad19;
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color:#1aad19;
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background-image: url(https://wxcx.llzt.net/images/hot.png) ;
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background-position:31px 0px;
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background-repeat:no-repeat;
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background-size:62%;
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}
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.selected2{
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box-sizing: border-box;
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flex: 0 0 21%;
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margin: 5px 5px;
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height: 50px;
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background-color: #F75000;
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color: white;
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background-image: url(https://wxcx.llzt.net/images/hot.png);
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background-position:31px 0px;
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background-repeat:no-repeat;
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background-size:62%;
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}
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
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for (var i = 0; i < this.data.liuliangItems.length; i++) {
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if (e.target.dataset.orderid == this.data.liuliangItems[i].id) {
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txtArray1[i] = {
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id: this.data.liuliangItems[i].id, changeColor: true,
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price: this.data.liuliangItems[i].price, name: this.data.liuliangItems[i].name,
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one2one: this.data.liuliangItems[i].one2one
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}
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} else {
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txtArray1[i] = {
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id: this.data.liuliangItems[i].id, changeColor: false,
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price: this.data.liuliangItems[i].price, name: this.data.liuliangItems[i].name,
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one2one: this.data.liuliangItems[i].one2one
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}
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}
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}