Ex3.0t同步请求

var obj;

    var value;
    if (window.ActiveXObject) {
        obj = new ActiveXObject('Microsoft.XMLHTTP');
    } else if (window.XMLHttpRequest) {
        obj = new XMLHttpRequest();
    }
    var url = '../../servlet/TestServlet‘；

   obj.open('GET', url, false);
    obj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    obj.send(null);
    value = obj.responseText;