当用户点击提交按钮时,它应该显示172-ajax-include.php。但它不起作用。我想我做得对。无法弄清楚我做错了什么。
<html>
<head>
<script type="text/javascript">
function load()
{ /* start function load */
if (window.XMLHttpRequest)
{ /* 1 if start */
xmlhttp = new XMLHttpRequest();
} /* 1 if end */
else
{ /* 1 else start */
xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
} /* 1 else end */
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200 /* the 200 makes sure that it's not empty*/)
{ /* 2 if start */
document.getElementById('adiv'),innerHTML = xmlhttp.responseText;
} /* 2 if end */
xmlhttp.open('GET', '172-ajax-include.php', true);
xmlhttp.send();
}
} /* end function load */
</script>
</head>
<body>
<input type="submit" onclick="load();">
<div id="adiv"></div>
</body>
</html>
答案 0 :(得分:1)
open()和send()必须放在onreadystatechange处理程序之外。
xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
{ /* 2 if start */
document.getElementById('adiv'),innerHTML = xmlhttp.responseText;
} /* 2 if end */
};
xmlhttp.open('GET', '172-ajax-include.php', true);
xmlhttp.send();
编辑:
更改html按钮
<input type"button" onclick="load()" value="Show"/>