相关疑难解决方法(0)

我试图通过ajax(通过XmlHttpRequest(= xhr)在Javascript中"流式传输"(从服务器到客户端).我使用的是在"HTTP Streaming"(推送)AJAX模式的跨浏览器实现中描述的修改后的handleResponse函数

function handleResponse() {
if (http.readyState != 4 && http.readyState != 3)
    return;
if (http.readyState == 3 && http.status != 200)
    return;
if (http.readyState == 4 && http.status != 200) {
    clearInterval(pollTimer);
    inProgress = false;
}
// In konqueror http.responseText is sometimes null here...
if (http.responseText === null)
    return;

while (prevDataLength != http.responseText.length) {
    if (http.readyState == 4  && prevDataLength == http.responseText.length)
        break;
    prevDataLength = http.responseText.length;
    var response = http.responseText.substring(nextLine);
    var lines = response.split('\n');
    nextLine = …