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PHP local refresh iframe via IFRAME flush iframe src get elements in iframe

Source: Internet
Author: User
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Reg.html
The reg.html page has an IFRAME tag, which is used by the IFRAME to request PHP verification that the user name is available. 

<html><head><metacharset="Utf-8"><title>IFrame Local Refresh 
     title
 > 
     Head
 ><body><formMethod="POST"action= "">User name:<inputtype="text"id="uname"name= ' username ' /><spanid="msg"style="color:red;" > 
     span
 > 
     Form
 ><iframeBorder=' 0 'width=' 0 'height= ' 0 ' id=' myiframe ' > 
     iframe
 ><scripttype="Text/javascript">let the IFRAME request check_reg.php document.getElementById (' uname ') when the user name input box loses focus . onblur =   function(){if(this. Value! = ") {Document.getelementby          Id (' Myiframe '). src = ' check_reg.php?username= '+ this. value; }      }     
     Script
 > 
     Body
 > 
     HTML
 >

check_reg.php


    
     header("content-type:text/html;charset=utf-8");$username  = $_GET['username'];if($username == 'admin'){    $msg = '对不起，用户名已被使用！';}else{    $msg = '恭喜！该用户名可以使用。';}echo<<
     <>< span="">
      ?>
     <>

'). addclass (' pre-numbering '). Hide (); $ (this). addclass (' has-numbering '). Parent (). append ($numbering); for (i = 1; i <= lines; i++) {$numbering. Append ($ ('
  • '). Text (i)); }; $numbering. FadeIn (1700); }); });

    The above introduces PHP through the IFRAME to achieve local refresh, including the content of the IFRAME, I hope that the PHP tutorial interested in a friend helpful.

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    Related Keywords:
    php iframe example iframe php file php iframe alternative iframe php page php iframe code iframe w3school iframe host
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