微信小程序计算器 比较数字大小等

计算器:
wxml:

{{num}}
{{op}}



C
DEL
%
÷


7
8
9
x


4
5
6
-


1
2
3
+


0
.
=


js:
//获取应用实例
const app = getApp()
Page({
data: {
num: '',
op: '+'
},
result: null,
isClear: false,
numBtn: function (e) {
var num = e.target.dataset.val
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: '' })
},
})
WXSS:
page{
display: flex;
flex-direction: column;
height: 100%
}
.result{
flex: 1;
background: #f3f6fe;
}
.btns{
flex: 1;
}

.bg{
background: #eee;
}

.btns {
flex: 1;
display: flex;
flex-direction: column;
font-size: 17pt;
border-top: 1rpx solid #ccc;
border-left: 1rpx solid #ccc;
}

.btns > view{
flex: 1;
display: flex;
}

.btns > view > view {
flex-basis: 25%;
border-right: 1rpx solid #ccc;
border-bottom: 1rpx solid #ccc;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: center;
}

.btns > view:last-child > view:first-child {
flex-basis: 50%;
}
.btns > view:first-child > view:first-child{
color:#f00;
}

.btns > view > view:last-child {
color: #fc8e00;
}
.result{
flex: 1;
background: #f3f6fe;
position: relative;
}
.result-num {
position: absolute;
font-size: 27pt;
bottom: 5vh;
right: 3vw;
}
.result-op {
font-size: 15pt;
position: absolute;
bottom: 1vh;
right: 3vw;
}

比较数字大小
wxml:


请输入第1个数:



请输入第2个数:



比较结果:{{result}}

wxss:
.input{
width: 300px;
margin-top: 20rpx;
border-bottom: 2rpx;
solid:rgb(240, 34, 34)
}
.x{
background-color: rgb(231, 60, 60)
}
.w{ margin: 50rpx;
background-color: rgb(94, 116, 241)
}
js:
Page({

/**

  • 页面的初始数据,定义数值、字符串、数组,相当于int num1=new int;这种样子
    */
    data: {
    num1: 0,
    num2: 0,
    result: ''
    },

/**

  • 生命周期函数--监听页面加载
    */
    onLoad: function (options) {

},

/**

  • 生命周期函数--监听页面初次渲染完成
    */
    onReady: function () {

},

/**

  • 生命周期函数--监听页面显示
    */
    onShow: function () {

},

/**

  • 生命周期函数--监听页面隐藏
    */
    onHide: function () {

},

/**

  • 生命周期函数--监听页面卸载
    */
    onUnload: function () {

},

/**

  • 页面相关事件处理函数--监听用户下拉动作
    */
    onPullDownRefresh: function () {

},

/**

  • 页面上拉触底事件的处理函数
    */
    onReachBottom: function () {

},

/**

  • 用户点击右上角分享
    */
    onShareAppMessage: function () {

},
num1Change: function (e) {
console.log("从界面获取的第一个数: "+e.detail.value)
this.setData({
num1: Number(e.detail.value)
})
},
num2Change: function (e) {
this.setData({
num2: Number(e.detail.value)
})
},
compare: function () {
console.log(this.data.num2)
var str = '两数相等'
if (this.data.num1 > this.data.num2) {
str = '第1个数大'
} else if (this.data.num2 > this.data.num1) {
str = '第2个数大'
}
this.setData({
result: str
})

}
})

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