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

php中世界最好的语言Original: 2018-05-18 11:18:311477browse

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>

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>";
  }
}
?>

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!

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

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