JavaScript中的addLoadEvent遇到的问题

Question

function getNewContent() {

var request = getHTTPObject();if (request) {
    request.open("GET", "example.txt", true);
    request.onreadystatechange = function() {        if (request.readyState == 4) {
            alert("Response Received");            var para = document.createElement("p");            
            var txt = document.createTextNode(request.responseText);
            para.appendChild(txt);            document.getElementById('new').appendChild(para);
        }
    };
    request.send(null);
} else {
    alert('Sorry, your browser doesn\'t support XMLHTTPRequest');
}
alert("Function Done");

}

addLoadEvent(getNewContent);

Firefox显示：ReferenceError: addLoadEvent is not defined，至于什么情况我不太明白，麻烦各位朋友了，谢谢

Answer 1

没有addLoadEvent这个方法大概是网上找的代码，又没找全，你以为浏览器自带addLoadEvent？