一.操作题
1.使用canvas组件五圈实现的绘制。
步骤:
在index.js中输入代码:
//.jsPage({ onReady:function (e){ // 获取canvas上下文对象const ctx = wx.createCanvasContext('myCanvas')// 绘制蓝色圆环ctx.beginPath()ctx.arc(100, 100, 50, 0, 2 * Math.PI)ctx.setStrokeStyle('#0000FF')ctx.stroke()// 绘制黄色圆环ctx.beginPath()ctx.arc(160, 100, 50, 0, 2 * Math.PI)ctx.setStrokeStyle('#FFFF00')ctx.stroke()// 绘制黑色圆环ctx.beginPath()ctx.arc(220, 100, 50, 0, 2 * Math.PI)ctx.setStrokeStyle('#000000')ctx.stroke()// 绘制绿色圆环ctx.beginPath()ctx.arc(130, 150, 50, 0, 2 * Math.PI)ctx.setStrokeStyle('#00FF00')ctx.stroke()// 绘制红色圆环ctx.beginPath()ctx.arc(190, 150, 50, 0, 2 * Math.PI)ctx.setStrokeStyle('#FF0000')ctx.stroke()// 绘制完成,显示在canvas上ctx.draw() }})
在index.json中输入代码:
{ "navigationBarBackgroundColor": "#000000", "navigationBarTitleText": "趋势(苏冷)", "navigationBarTextStyle": "white", "backgroundTextStyle": "dark"}
在index.wmxl中输入代码:
<canvas canvas-id="myCanvas"></canvas>
运行结果如下:
2.使用相应组件,完成类似如图4-29所示的“书单”页面。
步骤:
插入所需要的图片在images中
在index.wxss中输入代码:
.tou{ float: left; margin-top: 8px; width: 450px; height: 220px;}.tu1{ margin: 0 auto; float: left; display: block; width: 180px; height: 160px;}.yi{ margin-top: 10px;}.ig1{ margin-top: 5px;}.ig2 { position: absolute; }.ig2 image{ position: relative; top: 303px; left: 2px;} .ig3{ margin-top: 30px; position: absolute;}.ig3 image{ position: relative; top: 400px;}.yi{ margin-top: 5px; float: right;}.er{ margin-top: 5px; float: right;}.tu2{ margin: 0 auto; float: left; display: block; width: 180px; height: 160px; margin-top: 60px;}.zi1{ margin: 0 auto; display: block; font-size: 30px; float: none; display: block; margin-left: 200px; margin-top: 310px; }.ww{ position: absolute; left: 195px; top: 500px; font-size: 30px;}.m{ color: black; position: absolute; left: 200px; top:540px; font-size: 15px;}.j{ position: absolute; left: 200px; top:570px; font-size: 12px;color: gray;}.zi2{ display: block; font-size: 15px; float: none; display: block; margin-left: 200px; margin-top: 10px;}.zi3{ display: block; font-size: 10px; float: right; display: block; margin-left: 200px; margin-top: 10px; color: grey;}
在index.json中输入代码:
{ "usingComponents": {}, "navigationBarBackgroundColor": "#F2F2F2", "backgroundTextStyle": "light", "disableScroll":true, "navigationStyle": "custom"}
在index.wxml中输入代码:
<view style="font-size: 30px;position: absolute;top: 100px;top: 25px;"> ⬅书单</view><view><view class="ig1"><image src="./images/tou.png" mode="tu1" class="tou"style="position:absolute;top:60px"/></view></view><view> <view style="position: absolute;top:90px;color: grey;left: 40px;font-size: 33px;">培养商业意识,走出生活,职场和事业的困境。</view> <view style="position: absolute;top: 85px;color: grey;left: 15px;top: 170px;font-size: 18px;">创新者是如何思考问题的?本书单包括了互联网,思维方式,商业,文案,市场,营销等方方面面,是在思维方式上的创新,略去传统商学院的教条</view></view><view class="yi"><view class="zi1">朝花夕拾</view><view class="zi2">鲁迅</view><view class="zi3">《朝花夕拾》原名《旧事重提》,是现代文学家鲁迅的散文集,收录鲁迅于1926年创作的10篇回忆性散文,1928年由北京未名社出版,现编入《鲁迅全集》第2卷。</view></view><view class="ig2"><view class="ig2"><image src="./images/t.png" mode=""class="tu1"/></view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 10px;"></view><view class="ig3"><view><image src="./images/tu.png" mode=""class="tu2"/></view></view><view class="er"><view class="ww">不忘初心</view><view class="m">白居易</view><view class="j">白居易是唐代最高产的诗人之一,其诗歌题材广泛,语言平易通俗,富有情味,现存有3000首。代表作《琵琶行》《长恨歌》等经典作品得到了广泛传播和流传,对后世产生了深远的影响。</view></view>
运行效果:
3.使用相应组件,完成类似如图4-30所示的“西安找拼车”小程序部分界面。
在index.wxml中输入代码:
<!--index.wxml--><view style="background-color: black;height: 60px;"><view style="color: white;padding-top: 20px;">×西安找拼车</view></view><view style="color:grey;padding-top: 10px;background-color: darkgray;height: 35px;">联系方式(手机号和微信至少填一项)</view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 0px;"></view><view> <view style="font-size: 20px;position: absolute;top: 115px;">称呼*</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:115px">请输入称呼</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 20px;"></view><view> <view style="font-size: 20px;position: absolute;top:150px">手机号</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:150px">请输入手机号</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 20px;"></view><view> <view style="font-size: 20px;position: absolute;top: 195px;">微信号</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:195px">请输入微信号</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 23px;"></view><view style="color:grey;padding-top: 10px;background-color: darkgray;height: 35px;">拼车信息</view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 0px;"></view><view> <view style="font-size: 20px;position: absolute;top: 290px;">出发地点*</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:290px">限7个字</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 25px;"></view><view> <view style="font-size: 20px;position: absolute;top: 340px;">目的地*</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:340px">限7个字</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 25px;"></view><view> <view style="font-size: 20px;position: absolute;top: 390px;">空座位*</view> <view style="font-size: 20px;color: grey;position: absolute;left: 140px;top:390px">请输入空座位</view></view><view class="fo" style="border-bottom: 1px solid darkgrey;padding: 25px;"></view>
在index.js中输入代码:
{ "usingComponents": {}, "navigationBarBackgroundColor": "#F2F2F2", "backgroundTextStyle": "light", "disableScroll":true, "navigationStyle": "custom" }
运行效果:
二.编程题
“人生进程”是一款极简的小程序,它只有一个功能:就是计算一个人从出生到现在已经度过了多少个月,如图4-31所示。请编写程序完成此功能。
步骤:
首先分别新建三个文件夹加一个原有的文件夹:
"pages/index/index",
"pages/yy/yy",
"pages/ww/ww",
"pages/qq/qq"
插入所需要的图片在images中:
在app.json中输入添加代码:
{ "pages": [ "pages/index/index", "pages/yy/yy", "pages/ww/ww", "pages/qq/qq" ], "window": { "backgroundColor": "#F6F6F6", "backgroundTextStyle": "light", "navigationBarBackgroundColor": "#F6F6F6", "navigationBarTitleText": "云开发 QuickStart", "navigationBarTextStyle": "black" }, "tabBar": { "color": "#666666", "selectedColor": "#ff0000", "borderStyle":"black", "backgroundColor": "#ffffff", "list": [{ "pagePath": "pages/index/index", "iconPath": "./pages/images/mao.png", "selectedIconPath": "./pages/images/mao.png", "text": "首页" }, { "pagePath": "pages/yy/yy", "iconPath": "./pages/images/mao.png", "selectedIconPath": "./pages/images/mao.png", "text": "年月日" }, { "pagePath": "pages/ww/ww", "iconPath": "./pages/images/mao.png", "selectedIconPath": "./pages/images/mao.png", "text": "静思" }, { "pagePath": "pages/qq/qq", "iconPath": "./pages/images/mao.png", "selectedIconPath": "./pages/images/mao.png", "text": "关于" }] }, "style": "v2", "componentFramework": "glass-easel", "lazyCodeLoading": "requiredComponents"}
在index.wxml中写入代码:
<view style="text-align: center;font-size: 16x;position: absolute;left: 120px;">中国阶段人均寿命900个月</view><view style="position: absolute;padding-top: 30px;font-size: 26px;left: 70px;">2005年8月至今155个月</view><view style=" border:1px solid black;width: 100px;position: absolute;height: 20px;top: 92px;left: 85px;"></view><view style="position: absolute;padding-top: 90px;font-size: 16px;padding-left: 188px;"></view><view style="border: 5px;color: black;position: absolute;left: 240px;top: 92px;">换一个日期</view><view style=" border:1px solid black;width: 100px;position: absolute;height: 20px;top: 92px;left: 230px;"></view><view style="position: absolute;padding-top: 90px;font-size: 16px;padding-left: 490px;"><view style="position: absolute;left: 100px;top: 92px;">清除记录</view></view><view><image src="../images/hong.jpg" mode="" style="position: absolute;top:140px;left: 85px;height: 370px;width: 250px;"/></view><view style="position: absolute;top:540px;font-size: 18px;left:10px;">能把后面前行行走的机会抓住的人,十有八九都会成功</view>
在index.json中写入代码:
{ "navigationBarBackgroundColor": "#000000", "navigationBarTitleText": "趋势(苏冷)", "navigationBarTextStyle": "white", "backgroundTextStyle": "dark"}
在index.js中写入代码:
Page({ })
在index.wxss中写入代码:
.tou{ float: left; margin-top: 8px; width: 450px; height: 220px;}.tu1{ margin: 0 auto; float: left; display: block; width: 180px; height: 160px;}.yi{ margin-top: 10px;}.ig1{ margin-top: 5px;}.ig2 { position: absolute; }.ig2 image{ position: relative; top: 274px; left: 2px;}.ig3{ margin-top: 5px; position: absolute;}.ig3 image{ position: relative; top: 390px;}.yi{ margin-top: 5px; float: right;}.er{ margin-top: 5px; float: right;}.tu2{ margin: 0 auto; float: left; display: block; width: 180px; height: 160px; margin-top: 60px;}.zi1{ margin: 0 auto; display: block; font-size: 30px; float: none; display: block; margin-left: 200px; margin-top: 10px; }.zi2{ display: block; font-size: 15px; float: none; display: block; margin-left: 200px; margin-top: 10px;}.zi3{ display: block; font-size: 10px; float: right; display: block; margin-left: 200px; margin-top: 10px;}
在yy.wxml中写入代码:
<view style="text-align: center;">中国现阶段人均寿命900个月</view><form bindsubmit="bind" style="line-height: 60px;"><view style="display: flex; font-size: 20px;"><input type="text" name="time" placeholder="请输入时间" class="mm"/>至今:{{people}}个月</view><view style="display: flex;"><button formType="submit" class="bt">请输入后再点击此按钮</button><button formType="reset" style="width: 150px;font-size: 13px;">清除记录</button></view></form><view style="margin-top:50px;"><image src="../images/hong.jpg" class="r" style="width: 250px;" /></view><view style="width: 350px;"> <text bindtap="changeText1">{{ text1 }}</text></view>
在yy.json中写入代码:
{}
在yy.js中写入代码:
Page({ data:{ text1: '点击', people:new Date().toLocaleDateString() }, changeText1: function() { this.setData({ text1: '能把在前面行走的机会抓住的人,十有八九都会成功。' }); }, bind:function(e){ var time = new Date().toLocaleDateString() var year = time.substring(0,time.indexOf("/")) var mo = time.substring(time.indexOf("/")+1,time.lastIndexOf("/")) var value = e.detail.value.time var year2 = value.substring(0,time.indexOf("/")) var mo2 = value.substring(time.indexOf("/")+1,time.lastIndexOf("/")) var m1 = (year - year2 -1)*12+12-(mo2-mo) this.setData({ people : m1 }) } })
在yy.wxss中写入代码:
.mm{ width: 110px; padding-top: 18px; padding-left: 30px;}.bt{ padding-right: 20px; width: 175px; font-size: 13px; font-weight: bold;}.r{ width: 190px; height: 350px; margin-left: 80px;}
运行效果如下:
本章小结
本章介绍了小程序中的常用组件,包括容器组件(view、scroll-view、swiper)、基础内容组件(icon、text、progress、rich -text)、表单组件(form、input、button、radio、check-box、label、picker、picker -view、slider、switch、textarea)、多媒体组件(audio、image、video、camera)、其他组件(map、canvas等)。熟练掌握这些组件的属性和方法是开发小程序的必备技能。
本章到此结束,欢迎预览我的主页~