XMLHttpRequest 事件更改
var open = window.XMLHttpRequest.prototype.open,
send = window.XMLHttpRequest.prototype.send,
onReadyStateChange;
function openReplacement(method, url, async, user, password) {
var syncMode = async !== false ? 'async' : 'sync';
alert('Preparing ' +syncMode +' HTTP request : ' + method + ' ' + url
);
return open.apply(this, arguments);
}
function sendReplacement(data) {
alert('Sending HTTP request data : ', data);
if (this.onreadystatechange) {
this._onreadystatechange = this.onreadystatechange;
}
this.onreadystatechange = onReadyStateChangeReplacement;
return send.apply(this, arguments);
}
function onReadyStateChangeReplacement() {
alert('HTTP request ready state changed : ' + this.readyState);
if (this._onreadystatechange) {
return this._onreadystatechange.apply(this, arguments);
}
}
window.XMLHttpRequest.prototype.open = openReplacement;
window.XMLHttpRequest.prototype.send = sendReplacement;
posted on 2011-10-14 15:37 Henry_Wang 阅读(1346) 评论(0) 编辑 收藏 举报