CHROME扩展笔记之监听页面xhr请求
;(function () {
if ( typeof window.CustomEvent === "function" ) return false;
function CustomEvent ( event, params ) {
params = params || { bubbles: false, cancelable: false, detail: undefined };
var evt = document.createEvent( 'CustomEvent' );
evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
return evt;
}
CustomEvent.prototype = window.Event.prototype;
window.CustomEvent = CustomEvent;
})();
;(function () {
function ajaxEventTrigger(event) {
var ajaxEvent = new CustomEvent(event, { detail: this });
window.dispatchEvent(ajaxEvent);
}
var oldXHR = window.XMLHttpRequest;
function newXHR() {
var realXHR = new oldXHR();
realXHR.addEventListener('abort', function () { ajaxEventTrigger.call(this, 'ajaxAbort'); }, false);
realXHR.addEventListener('error', function () { ajaxEventTrigger.call(this, 'ajaxError'); }, false);
realXHR.addEventListener('load', function () { ajaxEventTrigger.call(this, 'ajaxLoad'); }, false);
realXHR.addEventListener('loadstart', function () { ajaxEventTrigger.call(this, 'ajaxLoadStart'); }, false);
realXHR.addEventListener('progress', function () { ajaxEventTrigger.call(this, 'ajaxProgress'); }, false);
realXHR.addEventListener('timeout', function () { ajaxEventTrigger.call(this, 'ajaxTimeout'); }, false);
realXHR.addEventListener('loadend', function () { ajaxEventTrigger.call(this, 'ajaxLoadEnd'); }, false);
realXHR.addEventListener('readystatechange', function() { ajaxEventTrigger.call(this, 'ajaxReadyStateChange'); }, false);
let send = realXHR.send;
realXHR.send = function(...arg){
send.apply(realXHR,arg);
realXHR.body = arg[0];
ajaxEventTrigger.call(realXHR, 'ajaxSend');
}
let open = realXHR.open;
realXHR.open = function(...arg){
open.apply(realXHR,arg)
realXHR.method = arg[0];
realXHR.orignUrl = arg[1];
realXHR.async = arg[2];
ajaxEventTrigger.call(realXHR, 'ajaxOpen');
}
let setRequestHeader = realXHR.setRequestHeader;
realXHR.requestHeader = {};
realXHR.setRequestHeader = function(name, value){
realXHR.requestHeader[name] = value;
setRequestHeader.call(realXHR,name,value)
}
return realXHR;
}
window.XMLHttpRequest = newXHR;
})();
var Gpins_data = {};
// 监听页面的ajax
window.addEventListener("ajaxReadyStateChange",function(e){
let xhr = e.detail;
if(xhr.readyState == 4 && xhr.status == 200){
// () 响应头信息
// 请求头信息
// 请求的地址
// 响应内容
// 请求的原始参数地址
// post参数，（get参数在url上面）
console.log(xhr);
}
});
// ({msg:'注入完成',time: (new Date()).valueOf(),data: new Date()});