微信小程序之template模板介绍

微信小程序 template模板详解及实例

首先看一些官方的一些介绍。

模板:模板功能是通过对template 标签属性 name=”” 去创建不同模板,通过is=”name的值”来使用。

通过上面两张图,大概能看出,使用模板可以为大量类似的布局带来便利。下面看一下我自己的一个Demo.

先放出效果图(数据来自聚合数据)

可以看到,除了选项个数的差别之外,其他布局是相同的。

下面的每一道题的模板。

<template name=carItem>
 <view class=timu>
  <view class=title>第pw_item.id题</view>
  <view class='question'>pw_item.question</view>
  <view class=img wx:if=pw_item.url!=''><image src=pw_item.url /></view>
  <view class='select'>A:pw_item.item1</view>
  <view class='select'>B:pw_item.item2</view>
  <view class='select' wx:if=pw_item.item3!=''>C:pw_item.item3</view>
  <view class='select' wx:if=pw_item.item4!=''>D:pw_item.item4</view>
  <view class='content'>答案:pw_item.answer</view>
  <view class='content'>解释:pw_item.explains</view>
 </view>
</template>

在我们上面的代码中,除了使用template标签定义模板外,还是用了条件渲染。例如当题目为判断题的时候。CD选项是没有数据的,所以就不能显示出来,我们可以通过if语句判断是否为空来决定显示与否。

下面放出代码

CarUtils.js

/**
 * 网络请求
 */
function request(url, subject, model, testType, success, fail) {
  if (typeof success != 'function' || typeof fail != 'function') {
    return
  }
  wx.request({
    url: url,
    data: {
      key: 5f0c9315c43385f5baaa3f49b79caa8f,
      subject: subject,
      model: model,
      testType: testType,


    },
    success: function (res) {
      if (res.data.error_code == 0) {
        console.log(获取数据成功),
          success(res.data)
      } else {
        wx.showModal({
          title: '提示',
          content: 'res.data.reason'+'请重新选择',
          success: function (res) {
            if (res.confirm) {
              console.log('用户点击确定')
            }
          }
        })
        console.log(失败原因 + res.data.reason)
        fail(res.data.reason)
      }
    },
    fail: function () {
      fail('网络出现问题')
    },
  })
}
function getanswer(url,success,fail){
   if( typeof success != 'function' || typeof fail != 'function' ) {
  return
 }
   wx.request({
    url:url,
    data: {
      key:0794b823b484d6e1b4186d150834ae1b,
    },
    success: function(res){
     if( res.data.error_code == 0 ) {
        console.log(获取数据成功),
        success( res.data )
      } else {
        console.log(失败原因+res.data.reason)
        fail( res.data.reason )
      }
    },
    fail: function() {
      fail( '网络出现问题' )
    },
   })
}
module.exports = {
  request: request,
  getanswer:getanswer
}

template.wxml

<template name=carItem>
 <view class=timu>
  <view class=title>第pw_item.id题</view>
  <view class='question'>pw_item.question</view>
  <view class=img wx:if=pw_item.url!=''><image src=pw_item.url /></view>
  <view class='select'>A:pw_item.item1</view>
  <view class='select'>B:pw_item.item2</view>
  <view class='select' wx:if=pw_item.item3!=''>C:pw_item.item3</view>
  <view class='select' wx:if=pw_item.item4!=''>D:pw_item.item4</view>
  <view class='content'>答案:pw_item.answer</view>
  <view class='content'>解释:pw_item.explains</view>
 </view>
</template>

选择界面 drivercar.js

Page({
 data:{
  subject: [
   {name: '1', value: '科目一',checked: 'true'},
   {name: '4', value: '科目四'},


  ],
  model: [
   {name: 'c1', value: 'c1',checked: 'true'},
   {name: 'c2', value: 'c2'},
   {name: 'a1', value: 'a1'},
   {name: 'a2', value: 'a2'},
   {name: 'b1', value: 'b1'},
   {name: 'b2', value: 'b2'},


  ],
  testType: [
   {name: 'rand', value: '随机(100条)',checked: 'true'},
   {name: 'order', value: '全部(全部)'},
  ],




 },
 onLoad:function(options){
 var that = this;
  that.setData({
   subject1:1,
   model1:c1,
   testType1:rand
  })
 },
 confirm(){
  var that=this;
   wx.navigateto({
   url: 'detail/detail?subject='+that.data.subject1+'&model='+that.data.model1+'&testType='+that.data.testType1,
  });
 },
  confirm1(){
  var that=this;
   wx.navigateto({
   url: 'detail_1/detail_1?subject='+that.data.subject1+'&model='+that.data.model1+'&testType='+that.data.testType1,
  });
 },
 //科目类型
 subjectChange(e){ 
  var that = this;
  console.log('科目类型:'+e.detail.value);
  that.setData({
   subject1:e.detail.value,


  })
 } ,
  //驾照类型
  modelChange(e){
  var that = this;
  console.log('驾照类型:'+e.detail.value);
  that.setData({
   model1:e.detail.value,
  })
 } ,
 //测试类型
  testTypeChange(e){
   var that = this;
  console.log('测试类型:'+e.detail.value);
  that.setData({
   testType1:e.detail.value,
  })
 } ,


})

选择界面drivercar.wxml

<view class=container>
<!--radio-->
 <view class=radio>
 <text>请选择考试类型:</text>
  <radio-group class=radio-group bindchange=subjectChange>
    <label class=radio wx:for=pw_subject wx:key=subject>
      <radio value=pw_item.name checked=pw_item.checked/>pw_item.value
   </label>
  </radio-group>
 </view>
 <view class=radio>
 <text>请选择驾照类型:</text>
  <radio-group class=radio-group bindchange=modelChange >
     <label class=radio wx:for=pw_model wx:key=model>
        <radio value=pw_item.name checked=pw_item.checked/>pw_item.value
     </label>
   </radio-group>
 </view>
 <view class=radio>
 <text>请选择模式:</text>
  <radio-group class=radio-group bindchange=testTypeChange >
     <label class=radio wx:for=pw_testType wx:key=testType>
        <radio value=pw_item.name checked=pw_item.checked/>pw_item.value
     </label>
   </radio-group>
 </view>
  <!--button-->
  <text class=nav bindtap=confirm>确定选择</text>
</view>

选择界面drivercar.wxss

.radio{ margin: 20rpx;}
.radio text{margin: 20rpx;}
.nav {
   border: 1px solid #DFDFDF;
  border-radius: 10px;
  text-align: center;
  width: 50%;
  float: left;
  height: 60rpx;
  line-height: 60rpx;
  margin-bottom:30rpx;
  margin-top: 30rpx;
  margin-left:25%;
  margin-right:25%;


}

题目界面detail.js

var util = require('../../../../Utils/CarUtils.js')
var url = 'http://api2.juheapi.com/jztk/query'
var answerurl = http://api2.juheapi.com/jztk/answers
Page({
  data: {
    loadingHide: false,
    ResList: {
      error_code: 0,
      reason: success,
      result: {
        1: A,
        2: B,
        3: C,
        4: D,
        7: AB,
        8: AC,
        9: AD,
        10: BC,
        11: BD,
        12: CD,
        13: ABC,
        14: ABD,
        15: ACD,
        16: BCD,
        17: ABCD
      }
    },
  },
  onLoad: function (options) {


    var that = this
    var z=1;
    var mTimuLIs={}
    util.request(url, options.subject, options.model, options.testType, function (dataJson) {
      console.log(options.model + model);
      console.log(options.testType + testType);
      console.log(options.subject + subject);
      console.log(请求成功00);


      mTimuLIs=dataJson[result];
      console.log(mTimuLIs.length);
      for (var i = 0; i < mTimuLIs.length; i++) {


        //console.log(that.data.ResList.result[1]);
        var y= parseInt(mTimuLIs

题目界面 detail.wxml

<import src=../../../../common/templet.wxml/>
<scroll-view scroll-y=true class=page-body >
   <template is=carItem data=pw_item wx:for=pw_mTimuLIs wx:key=TimuList/>
</scroll-view>
<loading hidden=pw_loadingHide>
  加载中...
</loading>

全局样式 app.wxss

.container {
 height:100%;
 flex: 1;
 display: flex;
 flex-direction: column;
 Box-sizing: border-Box;
 background-size: 100%;
} 
.item-view{
  padding: 10px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid #DEDEDE;
  border-left: 1px solid #DEDEDE;
  Box-shadow: 2px 2px 2px #C7C7C7;
  margin: 10px;
  border-radius: 5px;
}


.item-view .content{color: black;}
.item-view .date{ color: grey;margin-top: 10px;}
.item-view image{width: 100%;height: 400rpx;margin-top: 10rpx;}
.loading-view{display: flex;flex-direction: row; justify-content: center;align-items: center;padding: 10px;}
.timu{border: 1px solid #DFDFDF;margin: 20rpx;border-radius: 10px;}
.timu .title{font-size: 40rpx; }
.timu .question{text-indent: 20rpx;margin-left: 10rpx; padding: 10rpx;}
.timu .img{width: 100%;display:flex;flex-direction: column;align-items: center;margin: 0 auto;padding-top: 10rpx;padding-bottom: 10rpx;}
.timu .content{font-size: 30rpx;padding: 10rpx;margin-left: 20rpx }
.timu .select{font-size: 30rpx;margin-left: 30rpx;margin-right: 30rpx; padding: 20rpx; }

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