hzuapps#4 hzuapps#38 第4次实验代码

1514080901116/pages/form/form.js

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+// pages/form/form.js
+Page({
+
+  /**
+   * 页面的初始数据
+   */
+  data: {
+    text: '标题',
+    area: '内容',
+    count: '内容'.length  
+  },
+
+  /**
+   * 生命周期函数--监听页面加载
+   */
+  onLoad: function (options) {
+    var that = this;
+    wx.getStorage({
+      key: 'input',
+      success: function (res) {
+        console.log(res.data.area.length)
+
+        that.setData({
+          text: res.data.text,
+          area: res.data.area,
+          count: res.data.area.length
+        })
+      }
+    }) 
+    // 从服务器取回来 JSON
+    wx.request({
+      url: 'https://infoaas.com/data/hzc.json', 
+      //仅为示例，并非真实的接口地址
+      data: { },
+      header: {
+        'content-type': 'application/json' // 默认值
+      },
+      success: function (res) {
+        console.log(res.data)
+        /*
+        that.setData({
+          hasError: true,
+          errorText: res.data.name + ',' + res.data.teacher + ' ' + res.data.year
+        })*/
+      }
+    }) 
+  },
+
+  /**
+   * 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 () {
+
+  },
+
+  onSubmit : function(event) {
+    console.dir(event)
+    var that = this
+    var text = event.detail.value.text
+    if (!text) {
+      console.dir(text)
+      that.setData({
+        hasError: true,
+        errorText: '文字不能为空！'
+      })
+    } else {
+      that.setData({
+        hasError: false
+      })
+      wx.setStorage({
+        key: "input",
+        data: event.detail.value,
+        success: function(res) {
+          wx.showToast({
+            title: '成功',
+            icon: 'success',
+            duration: 2000
+          })
+
+        }
+      })
+    }
+  },
+
+  onTextChange: function(e) {
+    var that = this;
+    console.dir(e)
+    var text = e.detail.value
+    console.dir(text);
+    if (!text) {
+      that.setData({
+        hasError: true,
+        errorText: '文字不能为空！'
+      })
+    } else {
+      that.setData({
+        hasError: false
+      })
+    }
+  },
+
+  onChange : function(e) {
+    var that = this;
+      var value = e.detail.value;
+      console.dir(value)
+      that.setData({
+        count: value.length
+      })
+  }
+})

1514080901116/pages/form/form.json

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+{}

1514080901116/pages/form/form.wxml

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+<!--pages/form/form.wxml-->
+<view class="page" xmlns:wx="http://www.w3.org/1999/xhtml">
+    <view class="page__hd">
+        <view class="page__title">分享你的笑点</view>
+        <view class="page__desc">表单输入</view>
+    </view>
+    <view class="page__bd">
+      <form bindsubmit='onSubmit'>
+        <view class="weui-toptips weui-toptips_warn" 
+        wx:if="{{hasError}}">{{errorText}}</view>
+
+        <view class="weui-cells__title">文本框</view>
+        <view class="weui-cells weui-cells_after-title">
+            <view class="weui-cell weui-cell_input">
+                <view class="weui-cell__bd">
+                    <input class="weui-input" name="text" 
+                    value='{{text}}' placeholder="请输入标题" bindinput='onTextChange'/>
+                </view>
+            </view>
+        </view>
+
+        <view class="weui-cells__title">文本域</view>
+        <view class="weui-cells weui-cells_after-title">
+            <view class="weui-cell">
+                <view class="weui-cell__bd">
+                    <textarea class="weui-textarea" name="area" placeholder="请输入内容" style="height: 3.3em" value='{{area}}' bindinput='onChange'/>
+                    <view class="weui-textarea-counter">{{count}}/200</view>
+                </view>
+            </view>
+        </view>
+
+        <view class="weui-btn-area">
+            <button class="weui-btn" type="primary" form-type='submit'>确定</button>
+        </view>
+      </form>
+    </view>
+</view>

1514080901116/pages/form/form.wxss

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+/* pages/form/form.wxss */