本篇内容介绍了“微信小程序怎么实现计算器”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
网站的建设成都创新互联公司专注网站定制,经验丰富,不做模板,主营网站定制开发.小程序定制开发,H5页面制作!给你焕然一新的设计体验!已为水处理设备等企业提供专业服务。效果如下:
index.wxml
{{num}} {{op}} c DEL % ÷ 7 8 9 x 4 5 6 - 1 2 3 + 0 . =
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: "", // 存储数字 op: "" //存储运算符 }, 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: "" }) } })
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