微信小程序开发搜索功能实现(前端+后端+数据库

<!--index.wxml-->
<form bindsubmit="formSubmit">
<!--提交按钮 -->
<input type="text" name="id" placeholder='输入关键词' style='border:1px solid #c;height:30px;'/>
<button formType="submit" class="btn">搜索</button>  
</form>
<view>搜索结果</view>
<view wx:for="{{re}}" wx:key="re">
 <view style='color:#f00;'>{{item.result}}</view>
 <view style='color:green;'>{{item.title}}</view>
</view>

//index.js
//获取应用实例
const app = getApp()
Page({
 /**
  * 页面的初始数据
  */
 data: {
  result:'',
  state:''
 },
 formSubmit: function (e) {
  var that = this;
  var formData = e.detail.value.id; //获取表单所有name=id的值 
  wx.request({
   url: 'http://localhost/2018-5-24/search.php?id=' + formData,
   data: formData,
   header: { 'Content-Type': 'application/json' },
   suess: function (res) {
    console.log(res.data)
    that.setData({
     re: res.data,
    })
    wx.showToast({
     title: '已提交',
     icon: 'suess',
     duration: 2000
    })
   }
  })
 },
})

url: 'http://localhost/2018-5-24/search.php?id=' + formData,

var that = this;
var formData = e.detail.value.id; 

that.setData({
  re: res.data,
 })

<?php
header("Content-type:text/json;charset=utf8");
//定义参数
$id = $_GET["id"];
//表单验证
if(empty($id)){
  echo "[{\"result\":\"表单为空...\"}]";
}else{
  //连接数据库
  $con = mysql_connect("数据库链接","账号","密码");
  //设置数据库字符集 
  mysql_query("SET NAMES UTF8");
  //查询数据库
  mysql_select_db("数据库名", $con);
  $result = mysql_query("SELECT * FROM test WHERE id like '%$id%'");
  $results = array();
  while($row = mysql_fetch_assoc($result))
  {
    $results[] = $row;
    // 将数组转成json格式
    echo json_encode($results);
  }
  //关闭数据库连接
  mysql_close($con);
}
?>

<view wx:for="{{re}}" wx:key="re">
 <view style='color:#f00;'>{{item.result}}</view>
 <view style='color:green;'>{{item.title}}</view>
</view>