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這期內容當中小編將會給大家帶來有關微信小程序中如何實現一個計算器功能,文章內容豐富且以專業的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
index.wxml
<view class="content"> <view class="num">{{num}}</view> <view class="operotor">{{op}}</view> </view> <view class="entry"> <view> <view class="item" bindtap="resetBtn">c</view> <view class="item" bindtap="delBtn">DEL</view> <view class="item" bindtap="opBtn" data-val="%">%</view> <view class="item" bindtap="opBtn" data-val="/">÷</view> </view> <view> <view class="item" bindtap="numBtn" data-val="7">7</view> <view class="item" bindtap="numBtn" data-val="8">8</view> <view class="item" bindtap="numBtn" data-val="9">9</view> <view class="item" bindtap="opBtn" data-val="*">x</view> </view> <view> <view class="item" bindtap="numBtn" data-val="4">4</view> <view class="item" bindtap="numBtn" data-val="5">5</view> <view class="item" bindtap="numBtn" data-val="6">6</view> <view class="item" bindtap="opBtn" data-val="-">-</view> </view> <view> <view class="item" bindtap="numBtn" data-val="1">1</view> <view class="item" bindtap="numBtn" data-val="2">2</view> <view class="item" bindtap="numBtn" data-val="3">3</view> <view class="item" bindtap="opBtn" data-val="+">+</view> </view> <view> <view class="item tow" bindtap="numBtn" data-val="0">0</view> <view class="item one" bindtap="dotBtn" data-val=".">.</view> <view class="item one" bindtap="opBtn" data-val="=">=</view> </view> </view>
index.css
page { display: flex; flex-direction: column; height: 100%; } .content { flex: 1; background-color: #f3f6fe; position: relative; } .content .num { position: absolute; font-size: 27pt; bottom: 5vh; right: 3vw; } .content .operotor { font-size: 15pt; position: absolute; bottom: 1vh; right: 3vw; } .entry { flex: 1; font-size: 17pt; border-top: 1rpx solid #ccc; } .entry .item { flex: 1; padding: 30rpx 0; text-align: center; flex-basis: 25%; border-left: 1rpx solid #ccc; border-bottom: 1rpx solid #ccc; } .entry > view { display: flex; } .entry > view .tow { flex: 2; } .entry > view .one { flex: 1; }
index.js
Page({ data: { num: "", // 存儲數字 op: "" //存儲運算符 }, result: null, isClear: false, numBtn: function(e) { var num = e.target.dataset.val //console.log(num) 得到data-val的值 console.log(this.isClear) if (this.data.num === "0" || this.isClear) { this.setData({ num: num }) this.isClear = false } else { this.setData({ num: this.data.num + num }) } }, opBtn: function(e) { var op = this.data.op var num = Number(this.data.num) this.setData({ op: e.target.dataset.val }) if (this.isClear) { return } this.isClear = true if (this.result === null) { this.result = num return } if (op === "+") { this.result = this.result + num } else if (op === "-") { this.result = this.result - num } else if (op === "*") { this.result = this.result * num } else if (op === "/") { this.result = this.result / num } else if (op === "%") { this.result = this.result % num } this.setData({ num: this.result }) }, dotBtn: function() { if (this.isClear) { this.setData({ num: "0." }) this.isClear = false return } if (this.data.num.indexOf(".") >= 0) { return } this.setData({ num: this.data.num + "." }) }, delBtn: function() { var num = this.data.num.substr(0, this.data.num.length - 1) this.setData({ num: num === "" ? "0" : num }) }, resetBtn: function() { this.result = null this.isClear = false this.setData({ num: "0", op: "" }) } })
上述就是小編為大家分享的微信小程序中如何實現一個計算器功能了,如果剛好有類似的疑惑,不妨參照上述分析進行理解。如果想知道更多相關知識,歡迎關注億速云行業資訊頻道。
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