[英]Javascript callback for Sencha Touch proxy
I don't understand how to get information from another domain in Sencha Touch. 我不明白如何从Sencha Touch中的另一个域获取信息。 I want to fill my store with data retrieved from a javascript, that got the information from another webservice.
我想用从javascript检索到的数据填充我的商店,该数据是从另一个web服务获取的信息。
For a test, I wrote following code in simpleTest.js: 为了进行测试,我在simpleTest.js中编写了以下代码:
function hello(){
"test":[{ "text": "hello"}];
}
And the store looks like this: 商店看起来像这样:
Ext.define("AccessibleMap.store.Teststore", {
extend: "Ext.data.Store",
config: {
model: "AccessibleMap.model.Testmodel",
autoLoad: true,
proxy:{
type: 'jsonp',
url: 'http://test.accessiblemap.square7.ch/live%20access/scripts/simpleTest.js',
reader:{
type : 'json',
rootProperty : 'test'
}
}
}
});
The error message shows, that it can't find the page. 错误消息显示,找不到页面。
Uncaught SyntaxError: Unexpected token : simpleTest.js:2
The problem seems to be the callback. 问题似乎是回调。 How can I fix this?
我怎样才能解决这个问题?
How can I create a callback in javascript? 如何在JavaScript中创建回调? Do I need to stringify the returning string to with json?
我是否需要使用json将返回的字符串字符串化?
You need to tell the JavaScript to output the json, you cannot just write it in. Your code should be: 您需要告诉JavaScript输出json,您不能只写它。您的代码应为:
function hello(){
document.write('{"test":[{ "text": "hello"}]}');
}
You were also missing braces around your json {} 您还缺少json {}周围的括号。
Some other things to note as well when you start actually writing your proper callbacks. 当您开始实际编写适当的回调时,还需要注意其他一些事项。 You can use the Ext.JSON class to encode / decode json (Ext.JSON.encode / Ext.JSON.decode).
您可以使用Ext.JSON类对json进行编码/解码(Ext.JSON.encode / Ext.JSON.decode)。 I personally use a PHP backend and just use the native PHP functions to spit out my json.
我个人使用PHP后端,仅使用本机PHP函数吐出json。
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