微信小程序 點(diǎn)擊控件后選中其它反選實(shí)例詳解
前言：
如果需要實(shí)現(xiàn)進(jìn)來進(jìn)行給按鈕加上買一送一的樣式，或者單擊就選中單個(gè)按鈕，只能靠css結(jié)合js進(jìn)行控制了，小程序暫時(shí)沒有這樣的控件。
實(shí)現(xiàn)效果圖：
微信小程序進(jìn)來的時(shí)候自動(dòng)進(jìn)行按鈕樣式的初始化，這個(gè)需要一個(gè)字段做判斷，加上正則表達(dá)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%;}現(xiàn)在的方法把集合進(jìn)行循環(huán)，然后獲取當(dāng)前點(diǎn)擊的這個(gè)按鈕進(jìn)行比較，然后進(jìn)行樣式的修改
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 } } }感謝閱讀，希望能幫助到大家，謝謝大家對(duì)本站的支持！
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