xmlhttprequest

问题 There is a page (url), I request it by XMLHttpRequest, but I'm not getting response from requested url, It's directing request to another page, requesting --- > page.php getting reponse from > directedpage.php and the question is how can I get response url? (directedpage.php in example) 回答1: The final URL (after following all redirects) is available in the responseURL attribute of a XMLHttpRequest instance. This feature is new and only supported in Firefox 32 stable in September 2014 [ref]

问题 I'm trying to webscrape multiple tables from a website. So far I have built an excel VBA macro to do this. I also figured out how to get all the data when it is on multiple pages in the website. For instance, if I have 1000 results but 50 are displayed on each page. The problem is that I have the same 5 tables on multiple pages because each table has 1000 results. My code can only loop through each page for 1 table. I also have written code to grab each table, but I cannot figure out how to

问题 There is a page (url), I request it by XMLHttpRequest, but I'm not getting response from requested url, It's directing request to another page, requesting --- > page.php getting reponse from > directedpage.php and the question is how can I get response url? (directedpage.php in example) 回答1: The final URL (after following all redirects) is available in the responseURL attribute of a XMLHttpRequest instance. This feature is new and only supported in Firefox 32 stable in September 2014 [ref]

问题 I've got a web page that uses XMLHttpRequest to download a binary resource. In Firefox and Gecko I can use responseText to get the bytes, even if the bytestream includes binary zeroes. I may need to coerce the mimetype with overrideMimeType() to make that happen. In IE, though, responseText doesn't work, because it appears to terminate at the first zero. If you read 100,000 bytes, and byte 7 is a binary zero, you will be able to access only 7 bytes. IE's XMLHttpRequest exposes a responseBody

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 Are there any XHR-like browser APIs available for streaming binary to a server over HTTP? I want to make an HTTP PUT request and create data programmatically, over time. I don't want to create all this data at once, since there could be gigs of it sitting in memory. Some psueudo-code to illustrate what I'm getting at: var dataGenerator = new DataGenerator(); // Generates 8KB UInt8Array every second var streamToWriteTo; http.put('/example', function (requestStream) { streamToWriteTo =

问题 I'm jusing jQuery's $.getJSON() function to return a short set of JSON data. I've got the JSON data sitting on a url such as example.com . I didn't realize it, but as I was accessing that same url, the JSON data couldn't be loaded. I followed through the console and found that XMLHttpRequest couldn't load due to Access-Control-Allow-Origin . Now, I've read through, a lot of sites that just said to use $.getJSON() and that would be the work around, but obviously it didn't work. Is there

问题 Pseudo code: $(document).ajaxError(function(e, xhr, options, error) { xhr.retry() }) Even better would be some kind of exponential back-off 回答1: Something like this: $.ajax({ url : 'someurl', type : 'POST', data : ...., tryCount : 0, retryLimit : 3, success : function(json) { //do something }, error : function(xhr, textStatus, errorThrown ) { if (textStatus == 'timeout') { this.tryCount++; if (this.tryCount <= this.retryLimit) { //try again $.ajax(this); return; } return; } if (xhr.status ==

问题 I've seen this question asked by multiple people, none of the answers have worked for me. I'm trying to make an API call to the google maps api with react/axios. This is my get request: componentDidMount() { axios({ method : 'get', url : `http://maps.googleapis.com/maps/api/js?key=${key}/`, headers: { "Access-Control-Allow-Origin": '*' "Access-Control-Allow-Methods": 'GET', }, }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); } This is

问题 Like many others, my website is using jQuery. When I open the developer tools, I see a warning that says that XMLHTTPRequest is deprecated because of its detrimental effects to the end user's experience. I went on and read part of the documentation, but it was fairly technical. Can someone explain the consequences of shifting from XMLHTTPRequest to WHATWG in simple terms? It says it happened in 2012. Also, the documentation says that Synchronous XMLHttpRequest outside of workers is in the