通过JSON检索数字并将其存储在变量中

问题描述

好的，所以我对编程很陌生，只学习了一些基本的C语言.

Alright so I am very new to programming and have only learned a little bit of basic C.

https://api.vircurex.com/api/get_info_for_1_currency.json?base=DOGE&alt=BTC

http://software.intel.com/en-us/html5/articles/how-to-access-JSON-data-in-HTML5-apps

http://jsbin.com/IQUjUkiX/1/edit

基本上我想做的是从" http://pastebin.com/4SPcTFbQ 中检索json. (链接1)，并将其返回的数字存储在某种变量中. (有点像使用scanf()检索数字并将其存储到变量中)

Basically what I want to do is retrieve the json from "http://pastebin.com/4SPcTFbQ"(Link 1) and store on of the numbers it returns in some sort of variable. (kind of like using scanf() to retrieve the number and store it to a variable)

根据我一直在研究的内容，它不能通过C来完成，我相信必须通过javascript来完成.他们在这个网站上(请参阅pastebin链接2)，提供了此示例(请参阅pastebin链接3)，但是当我尝试将其示例json换成vircurex时，它似乎不再起作用.

From what I have been researching it cannot be done through C and I believe has to be done through javascript. On this site (refer to pastebin Link 2) they provide this example, (refer to pastebin Link 3) but when I try to swap out their example json for the vircurex one it does not seem to work anymore.

非常感谢任何帮助！

这里是示例:

HTML

<h3>Get JSON with padding</h3>

<button onclick="doJSON1()">Get JSON</button>
<br>
<br>
<hr>

<h3>Get JSON with Access-Control-Allow-Origin header: *</h3>

<button onclick="doJSON2()">Get JSON</button>
<br>
<br>
<hr>

<h3>Get JSON with NO Access-Control-Allow-Origin header</h3>

<button onclick="doJSON3()">Get JSON</button>

JavaScript

Javascript

function doJSON1() {
    $.getJSON('http://time.jsontest.com/?alloworigin=false&callback=?', function (data) {
        alert(JSON.stringify(data))
    });
}

function doJSON2() {
    $.getJSON('http://time.jsontest.com/?alloworigin=true', function (data) {
        alert(JSON.stringify(data))
    });
}

function doJSON3() {
    $.getJSON('http://time.jsontest.com/?alloworigin=false', function (data) {
        alert(JSON.stringify(data))
    });
}

在 jsFiddle

推荐答案

示例，请参见Javascript的 var 用于声明变量.

Example, see Javascript's var for declaring variables.

HTML

<h3>Get JSON with padding</h3>

<button id="ex1">Get JSON</button>
<br>
<br>
<hr>

<h3>Get JSON with Access-Control-Allow-Origin header: *</h3>

<button id="ex2">Get JSON</button>
<br>
<br>
<hr>

<h3>Get JSON with NO Access-Control-Allow-Origin header</h3>

<button id="ex3">Get JSON</button>

JavaScript

Javascript

var data1,
    data2,
    data3;

function doJSON1() {
    $.getJSON('http://time.jsontest.com/?alloworigin=false&callback=?', function (data) {
        data1 = data;
        console.log(data1);
    });
}

function doJSON2() {
    $.getJSON('http://time.jsontest.com/?alloworigin=true', function (data) {
        data2 = data;
        console.log(data3);
    });
}

function doJSON3() {
    $.getJSON('http://time.jsontest.com/?alloworigin=false', function (data) {
        data3 = data;
        console.log(data3);
    });
}

$('#ex1').on('click', doJSON1);
$('#ex2').on('click', doJSON2);
$('#ex3').on('click', doJSON3);

在 jsFiddle

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