如何分析提取网页数据并保存到数据库？

Question

比如我想提取百度首页中的“空间”二字，有没什么简单的例子参考一下？谢谢啊~(^@^)~

Answer 1

  var xmlhttp=false;
    if (window.XMLHttpRequest)
        {
            xmlhttp = new XMLHttpRequest();
        }
    else
        {
            try
                {
                    xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
                 }
                catch
                    {
                        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
                    }
        }
        
        if (xmlhttp)
            {
                xmlhttp.open("get","http://www.baidu.com");
                xmlhttp.onreadystatechange = function(){
                        if (xmlhttp.status == 299 && xmlhttp.readyState == 4)
                            {
                                var responseText = xmlhttp.responseText;
                                alert(responseText);
                            }
                    }
                    xmlhttp.setRequestHeader('If-Modified-Since', '0');
                    xmlhttp.send(null);
            }