客戶端：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title></title></head><body><label>帳號：</label><input type="text" id="name"><input type="submit" id="sub" value="查 詢">?<p id="p">12</p></body></html><script type="text/javascript">? var xml = new XMLHttpRequest();? var sub = document.getElementById('sub');? sub.onclick = function ()? {? ? xml.open('GET','1.php?name=131',true);? xml.send();? alert(xml.readyState);? alert(xml.responseText);? document.getElementById('p').innerHTML=xml.responseXML;? }</script>服務端：<?php? $db = mysqli_connect("localhost","root","root","bigo"); $name = $_GET['name']; $sql = "select * from bigo_yh where name='$name'";? ? $my = mysqli_query($db,$sql);? ? $bow = mysqli_num_rows($my); if(!$bow<1) { while ($row = mysqli_fetch_assoc($my)) { echo $row['name']; } }else{ echo "沒有$name"; }?>xml.readyState返回的是1，xml.responseXML沒有數(shù)據(jù)。為什么，那做錯了
ajax異步 返回數(shù)據(jù)為空問題
慕村1106498
2017-06-08 09:17:05
