尝试从Windows 8应用中的服务器获取数据

Question

I'm unable to use web services as im developing win8 app in javascript. so i want to fetch data from test.php from div="class".

Code:

WinJS.UI.Pages.define("xhr.html", {
    ready: function (element, options) {

        document.querySelector("#btn1").onclick = function (e) {
            WinJS.xhr({ url: "http://127.0.0.1:8081/test.php?serial=13", responseType: "document" }).then(function (xhr) {

                document.querySelector(".xhr #results1").innerText = xhr.response.querySelector("div[class='garaz']")[2].src;
                //document.querySelector(".xhr #results1").appendChild(imga);
            });
        };

Error: Exception is about to be caught by JavaScript library code at line 10, column 21 in ms-appx://694ccf96-9429-4c5a-95ec-bde492c2041a/xhr.js

0x800a138f - JavaScript runtime error: Unable to get property 'src' of undefined or null reference

If there is a handler for this exception, the program may be safely continued.

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if my question is stupid please ignore it because im just learning and if there is an easy way kindly help me do the same thing. its been a month im stuck at this problem. help

Answer 1

If you have many .garaz elements in the response, then use querySelectorAll . And also you can make the selector more simple: response.querySelectorAll('.garaz')[2].src

Answer 2

The problem was in query selector section i was using src attribute which is attribute of img tag and was using array . Thanks to https://stackoverflow.com/users/2436109/tenbits

document.querySelector(".xhr #results1").innerText = xhr.response.querySelector('.garaz').innerText;