[JavaScript] JS通过ajax方式从数据库动态获取数据的代码 →→→→→进入此内容的聊天室

来自 , 2020-08-27, 写在 JavaScript, 查看 100 次.
URL http://www.code666.cn/view/4b97b5ad
  1. <!DOCTYPE html>
  2. <html>
  3. <head>
  4. <script>
  5. function showCustomer(str)
  6. {
  7. var xmlhttp;    
  8. if (str=="")
  9.   {
  10.   document.getElementById("txtHint").innerHTML="";
  11.   return;
  12.   }
  13. if (window.XMLHttpRequest)
  14.   {// code for IE7+, Firefox, Chrome, Opera, Safari
  15.   xmlhttp=new XMLHttpRequest();
  16.   }
  17. else
  18.   {// code for IE6, IE5
  19.   xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  20.   }
  21. xmlhttp.onreadystatechange=function()
  22.   {
  23.   if (xmlhttp.readyState==4 && xmlhttp.status==200)
  24.     {
  25.     document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
  26.     }
  27.   }
  28. xmlhttp.open("GET","getcustomer.asp?q="+str,true);
  29. xmlhttp.send();
  30. }
  31. </script>
  32. </head>
  33. <body>
  34.  
  35. <form action="">
  36. <select name="customers" onchange="showCustomer(this.value)">
  37. <option value="">Select a customer:</option>
  38. <option value="ALFKI">Alfreds Futterkiste</option>
  39. <option value="NORTS ">North/South</option>
  40. <option value="WOLZA">Wolski Zajazd</option>
  41. </select>
  42. </form>
  43. <br>
  44. <div id="txtHint">Customer info will be listed here...</div>
  45.  
  46. </body>
  47. </html>
  48.  
  49. //javascript/8182

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