jsonp | 易学教程

How to detect ajax cross domain request in php

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问题 For the normal ajax request I use: strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest' But this don't work with cross domain request. How can I do? 回答1: Edit2: If you're using jQuery.ajax function in this way: var request = $.ajax({ url: "http://somesite.com/somescript.php?somevar=somevalue", dataType: "jsonp", jsonp: 'callback', success: function(data) { alert('Done!'); } }); Then you can check the $_SERVER['REQUEST_URI'] variable, or simply $_GET['callback'] and $_GET['_'] .

jQuery Cross-Domain Ajax JSONP Calls Failing Randomly For Unknown Reasons In Some IE Versions

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问题 I am making cross-domain Ajax calls using the latest version of jQuery 1.7.1. with a JSONP response. I have already tested it extensively on: Safari, Chrome, Opera, Firefox, IE6 IE7 IE8 IE9 (in compatibility mode and not) on Win XP and Win 7 all of them working flawlessly. Never failing on multiple tests. All of them using the standard default settings with JavaScript and Cookies enabled. In production, the call very very rarely fails, but i've had several users out of hundreds that have.

Add Accept header to JQuery AJAX GET (via JSONP) request

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问题 I'm trying to add an accept header to a jQuery AJAX GET request which uses the "jsonp" dataType , but for some reason it's not working. Here's my code thus far. var e4json = JSON.stringify( { "thomas_smith106" : "Daniel244", "transaction_type" : "34", "transaction_tag" : "902006933", "authorization_num" : "ET4653", "amount" : "15.75" } ); $.ajax ({ url: "https://api.demo.globalgatewaye4.firstdata.com", type: "GET", headers : { 'accepts' : 'application/json' }, data: e4json, dataType: "jsonp",

vue--vue-resource实现 get, post, jsonp请求

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vue-resource 实现 get, post, jsonp请求除了 vue-resource 之外，还可以使用 axios 的第三方包实现实现数据的请求之前的学习中，如何发起数据请求？常见的数据请求类型？ get post jsonp 测试的URL请求资源地址： get请求地址： http://vue.studyit.io/api/getlunbo post请求地址： http://vue.studyit.io/api/post jsonp请求地址： http://vue.studyit.io/api/jsonp JSONP的实现原理由于浏览器的安全性限制，不允许AJAX访问协议不同、域名不同、端口号不同的数据接口，浏览器认为这种访问不安全；可以通过动态创建script标签的形式，把script标签的src属性，指向数据接口的地址，因为script标签不存在跨域限制，这种数据获取方式，称作JSONP（注意：根据JSONP的实现原理，知晓，JSONP只支持Get请求）；具体实现过程：先在客户端定义一个回调方法，预定义对数据的操作；再把这个回调方法的名称，通过URL传参的形式，提交到服务器的数据接口；服务器数据接口组织好要发送给客户端的数据，再拿着客户端传递过来的回调方法名称，拼接出一个调用这个方法的字符串，发送给客户端去解析执行；

vue.js(vue-resource) ---jsonp跨域

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之前的笔记说axios没有办法处理跨域问题，所以就引入了vue-resource。使用jsonp来解决跨域问题. vue-resource的基本用法: get(url, [options]) head(url, [options]) delete(url, [options]) jsonp(url, [options]) post(url, [body], [options]) put(url, [body], [options]) patch(url, [body], [options]) 参考下载文档地址:https://github.com/pagekit/vue-resource/blob/develop/docs/http.md 跨域搜索360搜索案例: 代码： <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script type="text/javascript" src="js/vue.js" ></script> <script type="text/javascript" src="js/vue-resource/vue-resource.js" ></script> <script type="text/javascript"> window.onload =

How to send form field value to a REST service using JSON or AJAX

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问题 I have a form field (email signup) on the site, and the email provider wants me to submit it to their REST web service and get a response. I've never used JSON or AJAX before so floundering! The HTML: <form> <input type="hidden" name="gid" value="12345678"> <input type="hidden" name="user.CustomAttribute.NewsletterPopUp" value="Global"> <input type="hidden" name="user.CustomAttribute.NewsletterOptIn" value="True">" value="True"> <input type="text" name="uemail" class="email_input_field" value

jQuery JSONP - error with a callback outside done()

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问题 I'm on jQuery 1.8.2 and I'm doing a JSONP call like this: function foo(data) { console.log(data) } $.ajax({ type: 'GET', url: http://xxx.cloudfront.net/posts.json?category=News&callback=foo, dataType: 'jsonp', cache: true, jsonp: false }).done(function (data) { }).fail(function (XHR, status, error) { console.log(error); }); When I run this the proper data response gets returned to the foo callback. But the error also fires, and the console logs the error as Error {} . From reading elsewhere

using jsonp in express.js for node.js

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问题 I am creating a simple JSON API that just returns me an object using jsonp using node-js Here is the code for server side : app.get('/vit',function (req,res,next) { res.type('application/json'); res.jsonp(items); //items is the object }); On deploying to nodejitsu , and going to url /vit i get the object items.That means its working on the server side. I have another domain from where I wanna get this object using jsonp Heres the client-side code : <script src="http://ajax.googleapis.com/ajax

HTTP JSONP request issue with $http in AngularJS

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问题 I get the bellow error when I try to use the JSONP method in angularJS. Uncaught SyntaxError: Unexpected token : http://example.com/getSomeJson?format=jsonp&json_callback=angular.callbacks._0 What am I doing wrong here, this is my AngularJs controller with the http request: UPDATED QUESTION DETAILS See below with code snipit which reproduces my problem, I've commented some of the .js to illustrate what I've tried so far. var app = angular.module('app', []); app.controller('mainController', ['

Angularjs. Jsonp. Sending data

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问题 I try to send data using JSONP request in AngularJS. $http({ method: 'jsonp', url: 'http://test.local/?callback=JSON_CALLBACK', /// Add '?callback=JSON_CALLBACK' data: JSON.stringify(request) }) .success(function (data, status, headers, config) { }); Is this possible? 回答1: Yes it's possible see the $http.jsonp function. In short you should do something like $http.jsonp('http://www.example.com?callback=JSON_CALLBACK') .success (function(data, ...) { //your data here ... }) Please be aware that