How to make real-time search prompts with PHP+JS-PHP Tutorial-php.cn

How to make real-time search prompts with PHP+JS

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Release： 2023-03-26 14:24:01

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This time I will show you how to make real-time search prompts with PHP JS. What are the precautions for making real-time search prompts with PHP JS? The following is a practical case, let's take a look.

The rendering is as follows:

The code is as follows:

HTML code: (This code is implemented in two ways, one is Jquery, A kind of native JS)

<html>
<head>
  <script src="/DelphiRequest/search/js/jquery.js"></script>
  <script>
/*用原生js实现
//    function showResult(str)
//    {
//      if (str.length==0)
//      {
//        document.getElementById("livesearch").innerHTML="";
//        document.getElementById("livesearch").style.border="0px";
//        return;
//      }
//      if (window.XMLHttpRequest)
//      {// IE7+, Firefox, Chrome, Opera, Safari 浏览器执行
//        xmlhttp=new XMLHttpRequest();
//      }
//      else
//      {// IE6, IE5 浏览器执行
//        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
//      }
//      xmlhttp.onreadystatechange=function()
//      {
//        if (xmlhttp.readyState==4 && xmlhttp.status==200)
//        {
//          document.getElementById("livesearch").innerHTML=xmlhttp.responseText;
//          document.getElementById("livesearch").style.border="1px solid #A5ACB2";
//        }
//      }
//      xmlhttp.open("GET","livesearch.php?q="+str,true);
//      xmlhttp.send();
//    }
*/
//用jquery实现
     function showResult(str){
       $.ajax({
         type: "GET",
         url : "livesearch.php",
         datatype : 'json',
         data: {'q':str} ,
         success :function (data) {
           document.getElementById("livesearch").innerHTML=data;
           document.getElementById("livesearch").style.border="1px solid #A5ACB2";
         }
       })
     }
  </script>
</head>
<body>
<form>
  <input type="text" size="30" onkeyup="showResult(this.value)">
  <p id="livesearch"></p>
</form>
</body>
</html>

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PHP code is as follows: (PHP can not only consider using arrays directly, but also directly query the database to obtain the database content. This code uses arrays.)

<?php
$provinces=array("beijing","tianjin","shanghai","chongqing","hebei","henan","heilongjiang","jilin","changchun",
  "shandong","anhui","shanxi","guangzhou","yunnan","hainan","xizang","qinghai","fujian","guizhou","jiangsu",
  "zhejiang","guangzhou","yunan","hainan","xizang","neimenggu","sichuan","gansu","ningxia","xianggang","aomen");
$tmp=$_GET[&#39;q&#39;];
$val=array();
$k=0;
if (strlen($tmp)>0)
{
  for($i=0;$i<31;$i++){
    if(strpos($provinces[$i],$tmp)!==false){
       //传递值给val
       $val[$k]=$provinces[$i];
       //下标增加
       $k=$k+1;
    }
  }
  //遍历val数组
  for($j=0;$j<count($val);$j++)
  {
    echo $val[$j];
    echo "<br>";
  }
}
?>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!