jsonp | 易学教程

XmlHttpRequest错误：Access-Control-Allow-Origin不允许使用原点null

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我正在开发一个页面，该页面通过 jQuery 的AJAX支持从Flickr和Panoramio中提取图像。 Flickr方面运行良好，但是当我尝试从Panoramio进行 $.get(url, callback) 时，我在Chrome的控制台中看到一个错误： XMLHttpRequest 无法加载 http://www.panoramio.com/wapi/data/get_photos?v=1&key=dummykey&tag=test&offset=0&length=20&callback=processImages&minx=-30&miny=0&maxx=0&maxy=150 。 Access-Control-Allow-Origin不允许使用Origin null。如果我直接从浏览器查询该URL，它将正常工作。这是怎么回事，我可以解决这个问题吗？我是在错误地编写查询，还是Panoramio这样做妨碍了我的工作？ Google并未在错误消息中显示任何有用的匹配项。编辑这是一些显示问题的示例代码： $().ready(function () { var url = 'http://www.panoramio.com/wapi/data/get_photos?v=1&key=dummykey&tag=test&offset=0&length=20&callback

Any way to identify a redirect when using jQuery's $.ajax() or $.getScript() methods?

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问题 Within my company's online application, we've set up a JSONP-based API that returns some data that is used by a bookmarklet I'm developing. Here is a quick test page I set up that hits the API URL using jQuery's $.ajax() method: http://troy.onespot.com/static/3915/index.html If you look at the requests using Firebug's "Net" tab (or the like), you'll see that what's happening is that the URL is requested successfully, but since our app redirects any unauthorized users to a login page, the

学习jsonp

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jsonp 以前学过，当时就挺懵的，还全忘了，这次就当复习了一遍jsonp，😭 这里是解决客户端的跨域问题，服务端去解决跨域问题比这个简单只要加一个请求头就可以了 const express = require('express') const app = express() app.get('/', (req, res, next) => { console.log(`收到客户端请求了：${req.url}`) var data = JSON.stringify({ foo: 'bar', list: [1, 2, 3] }) setTimeout(function () { res.end(`${req.query.callback}(${data})`) }, 1000) }) app.listen(3000, () => { console.log('running...') }) <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>jsonp - 示例</title> </head> <body> <script> // 异步请求跨域限制（ajax） // 不同域名、不同协议、不同端口号 jsonp({ url: 'http://127.0.0.1:3000/', data: '',

ajax调用webservice 跨域问题

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用js或者jquery跨域调用接口时对方的接口需要做jsonp处理，你的ajax jsonp调用才可以 egg 接口中已经做了jsonp处理,所以可以跨域调用 //$.ajax({ // url: "http://api.k780.com:88/?app=weather.today&weaid=1&appkey=10003&sign=b59bc3ef6191eb9f747dd4e83c99f2a4&format=json&jsoncallback=?", // dataType: "jsonp", // type: "Post", // jsonpCallback: "jsonpCallback", // success: function (data) { // var $ul = $("<ul></ul>"); // $.each(data, function (i, v) { // alert(i); // //if (i=="success") { // //} else { // // $("#dvWeather").html("weaid:" + v.weaid + "<br/>" + "days:" + v.days + "<br/>" + "week:" + v.week + "<br/>" + "cityno:" + v.cityno + "<br/>" +

Why webpack use jsonp to get chunk script

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问题 I don't think there's a CORS issue. Why webpack use jsonp to get chunk script? This is generated webpackBootstrap. /******/ // install a JSONP callback for chunk loading /******/ var parentJsonpFunction = window["webpackJsonp"]; /******/ window["webpackJsonp"] = function webpackJsonpCallback(chunkIds, moreModules) { /******/ // add "moreModules" to the modules object, /******/ // then flag all "chunkIds" as loaded and fire callback /******/ var moduleId, chunkId, i = 0, callbacks = []; /*****

Cannot read response from AngularJS $resource JSONP get from Yahoo Finance

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问题 I am able to get stock prices from Google Finance using Angular JS $resource with JSONP. This is shown here: http://jsfiddle.net/8zVxH/1/ I need historical prices, which Google does not provide, but Yahoo does. I modified the above jsfiddle to this: http://jsfiddle.net/curt00/BqtzB/ Here's the code: angular.module('app', ['ngResource']); function AppCtrl($scope, $resource) { var yqlURL="http://query.yahooapis.com/v1/public/yql?q="; var dataFormat="&format=json&env=store%3A%2F%2Fdatatables.org

Cannot call method 'substring' of undefined app.js:1 sencha nested

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问题 Cannot call method 'substring' of undefined app.js:1 I get this error on the build package version of a sencha touch app that's based on the building your first app tutorial on sencha doc. The regular version runs just fine, but when it is build I Just get a blue screen. The built version runs fine when I comment the proxy related lines for the nestedlist. proxy: { type: 'jsonp', url: 'https://ajax.googleapis.com/ajax/services/feed/load?v=1.0&q=http://feeds.feedburner.com/SenchaBlog', reader:

Cannot call method 'substring' of undefined app.js:1 sencha nested

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How to make cross domain ajax call using jQuery JSONP

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问题 What should I Change the below code to load XML cross domain using jsonp.. $.ajax({ type: "GET", url: "http://www.w3schools.com/xml/note.xml", dataType: "xml", success: function(xml) { alert('Hi'); } }); Hope my problem is resolved. 回答1: As far as I know you can't (directly) load XML data using JSONP. Cross-site AJAX with JSONP relies on wrapping the required object inside a Javascript function call that's executed inside a dynamically created <script> tag, and there's no mechanism for doing

Is there any javascript library to capture mouse/keyboards events and send them to external server?

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问题 What I need is something which: can catch all keyboard events can catch all mouse events (clicks, movement) can catch page scrolling, possibly taking care about browsers differences send data to external server using JSONP (or anything else, but need to work not only in newest browsers) is quite small, at most xx kB I hope I would like to find something which have at least 3 of above implemented properly. I can also look at js frameworks like Dojo or JQuery if they can help me, but then will