xmlhttprequest

问题 I have a button in JSP, when clicked, goes to a servlet stores a java object using request.setAttribute("attr", object) and forwards to another page. In that page, I am using a custom JSP tag which gets this attribute and displays some values. Now I want this all to happen using AJAX. I want to have only one page which submits a form and receives an object to be used by custom JSP tag in the same page. How do I do this ? Is there a reliable library for that ? From what I see, in ajax I can

问题 This question already has an answer here : Closed 7 years ago . Possible Duplicate: Reg: Perl CGI script Autoupdate with New Data A perl CGI script continuosly updating the time, instead of creating a time list #!C:/perl/bin/perl.exe use warnings; use strict; use CGI; local $| = 1; my $cgi = new CGI; my $string = localtime(); print $cgi->header(); print $cgi->start_html("Welcome"); print $cgi->h1("$string"); print $cgi->end_html(); print $cgi->header(); print $cgi->start_html("Welcome");

问题 My first post on StackOverflow so please go easy on me :) I'm an intern at a VR company and am trying to webscrape Spokeo.com for data. I have successfully extracted the correct data using XMLHTTP (as there is a large quantity of data being searched) but have come across an issue when not being able to read the information unless logged in. E.G Searched term:7980 Sunset Blvd Result: Company ***** ***** *****, ***** *****. If I manually log in and search for this location I can get all of the

问题 I want to replay an audio file from a server in JavaScript, but I cannot get the correct data format for decodeAudioData to decode it. Here is my method for getting and playing the audio data in JavaScript: var source = audioContext.createBufferSource(); var request = new XMLHttpRequest(); request.open('GET', 'https://audioserver.com/getaudio.php', true); request.responseType = 'arraybuffer'; request.onload = function() { var audioData = request.response; audioContext.decodeAudioData

问题 I have this, var JOHNNY = (function() { var module = {}; function getData(id, callback){ var xhr = new XMLHttpRequest(); var url = "http://someurl/api/5"; xhr.onreadystatechange = function () { if (xhr.readyState == 4 && (xhr.status == 200)) { callback(xhr.response); } }; xhr.open("GET", url, true); xhr.responseType = 'json'; xhr.send(null); } function myCallBack(data){ return data; //console.log works; } module.getStuff=function(id){ return getData(5, myCallBack); //just hardcoded id here }

问题 Hopefully this is simple to answer. With a credentialed request in XHR2, which cookies are sent? I've been following the MDN article on credentialed requests, and it shows that the cookie pageAccess=2 is sent with the request. However it doesn't explain where that cookie comes from, and why that cookie specifically is being sent. Is it simply that all cookies set by the page are sent in any credentialed request? 回答1: From the HTML5 Rocks page on CORS: The .withCredentials property will

问题 I have this code to get a captcha from this website var imported = document.createElement('script'); imported.onload = function() { var str = document.querySelector("body > table.troisbords > tbody > tr > td > table > tbody > tr > td > div > blockquote > table > tbody > tr > td:nth-child(3) > table > tbody > tr:nth-child(2) > td > form > table > tbody > tr:nth-child(4) > td:nth-child(1)").innerHTML.length if (str <= 43) { var div = document.createElement("div"); div.id = "divPage"; var img =

问题 I have a function foo which makes an Ajax request. How can I return the response from foo ? I tried returning the value from the success callback as well as assigning the response to a local variable inside the function and returning that one, but none of those ways actually return the response. function foo() { var result; $.ajax({ url: '...', success: function(response) { result = response; // return response; // <- I tried that one as well } }); return result; } var result = foo(); // It

问题 On a web page with a extension-injected custom XMLHttpRequest class, I need to intercept and modify certain responses before the load event is raised on the rest of the document. Right now, my modification code reacts to the load event. How would I use a function to modify the response before the load event was fired? This is the code I am using: let oldXHROpen = window.XMLHttpRequest.prototype.open; window.XMLHttpRequest.prototype.open = function (method, url, async, user, password) { var

问题 I have a Jmeter load project the requires retrieving 2 values of cookies and resend them in the other requests. Here is my project test plan: -Test Plan -Thread Group -Login request -Payment page -Payment history page -HTTP Cookie Manager -HTTP Header Manager -View Results Tree Cookie Data: JSESSIONID=0000SZb55xyLAaqLlDzumq_PpIw:-1; XSRF-TOKEN=a684e233-648e-4219-ae21-25fb362e232d The cookie data is received successfully from the login request by cookie manager and sent in the second request