解析json并在popop中显示图像 [英] Parsing json and show image in popop
问题描述
我试图在JavaScript中为Chrome编写一个xkcd扩展。
要获取最新映像的网址，我从 http： //dynamic.xkcd.com/api-0/jsonp/comic/ 并尝试解析它。很明显，这并不奏效。
所以我的问题是：
-
如何从json中检索图片url？
-
如何将图片插入到弹出窗口？
这里是我的代码：
（我跟着一个教程，这就是为什么还有一些闪烁的片段留下来...）
manifest.json：
{
name： xkcd扩展名，
version：1.0，
description：我创建的第一个xkcd扩展名。，
browser_action：{
default_icon ：icon.png，
popup：popup.html
}，
权限：[
http://www.xkcd.com /
}
popup.html：
<！doctype html>
< html>
< head>
< title>入门Extension的弹出式菜单< / title>
< style>
body {
min-width：357px;
overflow-x：hidden;
}
img {
margin：5px;
border：2px纯黑色;
vertical-align：middle;
width：300px;
height：300px;
}
< / style>
< script src =http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js>
< / script>
< script>
showPhotos（）;
function showPhotos（）{
// var url =http://xkcd.com/info.0.json;
var url =http://dynamic.xkcd.com/api-0/jsonp/comic/;
alert（url）;
// var imgURL;
// $ .getJSON（url，function（data）{
// alert（data.img）;
// imgURL = data.img;
//}） ;
// alert（imgURL）;
var img = document.createElement（image）;
alert（img）;
img.src ='http://imgs.xkcd.com/comics/wrong_superhero.png';
alert（img.src）;
document.body.appendChild（img）;
}
< / script>
< / head>
< body>
< div id =result>
< / div>
< / body>
< / html>
当然应该是
var img = document.createElement（img）;
I'm trying to write an xkcd extension for chrome in javascript. To obtain the url to the latest image, I fetch the JSON from http://dynamic.xkcd.com/api-0/jsonp/comic/ and try to parse it. Obviously, that doesn't quite work.
Neither is the json parsed correctly, nor is the image from the hardcoded url shown in the popup. How can I solve these problems?
So my questions are:
How can I retrieve the image url from the json?
How can I insert the image to the popup?
Here is my code: (I followed a tutorial, that's why there's still some flicker-snippets left...)
The manifest.json:
{
"name": "xkcd extension",
"version": "1.0",
"description": "The first xkcd extension that I made.",
"browser_action": {
"default_icon": "icon.png",
"popup": "popup.html"
},
"permissions": [
"http://www.xkcd.com/"
]
}
The popup.html:
<!doctype html>
<html>
<head>
<title>Getting Started Extension's Popup</title>
<style>
body {
min-width:357px;
overflow-x:hidden;
}
img {
margin:5px;
border:2px solid black;
vertical-align:middle;
width:300px;
height:300px;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js">
</script>
<script>
showPhotos();
function showPhotos() {
// var url="http://xkcd.com/info.0.json";
var url = "http://dynamic.xkcd.com/api-0/jsonp/comic/";
alert(url);
// var imgURL;
// $.getJSON(url, function(data) {
// alert(data.img);
// imgURL=data.img;
// });
//alert(imgURL);
var img = document.createElement("image");
alert(img);
img.src = 'http://imgs.xkcd.com/comics/wrong_superhero.png';
alert(img.src);
document.body.appendChild(img);
}
</script>
</head>
<body>
<div id="result">
</div>
</body>
</html>
var img = document.createElement("image");
should definitely be
var img = document.createElement("img");
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