具有返回值的getJSON,有人可以看看这里有什么问题吗? [英] getJSON with return value, Can someone take a look what is wrong here?
问题描述
您好!
我试图从回调函数中返回一个值但没有成功。
你能看出这里有什么问题??:
<前lang =Javascript> 功能 getval (回调){
jQuery.getJSON(' http://data.mtgox.com/api/1 / BTCUSD / ticker?callback =?', function (data){
// 我们不能使用.return,因为return是一个JavaScript关键字。
callback(data [' return']。avg.value);
});
}
$( function (){
$( document )。ready( function (){
getval( function (value) {
alert(' 使用' + value + ' here!');
});
});
} );
这里是JSFIddle链接: http://jsfiddle.net/kf6qb / 1 /
非常感谢!
( function (){
( document )。ready( function (){
getval( function (value){
alert(' 使用' + value + ' <执行某些操作span class =code-string> here!');
});
});
});
这里是JSFIddle链接: http://jsfiddle.net/kf6qb/1/
非常感谢!
您好,
我已经创建了一个小样本供您测试,可以帮助您实现目标。
< html >
< head >
< script 类型 = text / javascript src = http://code.jquery.com/jquery-1.9.1.js > < / script > ;
< script type = text / javascript >
Hello!
Im Trying to return a value from callback function with no success.
Can you see what is wrong here??:
function getval( callback ){
jQuery.getJSON('http://data.mtgox.com/api/1/BTCUSD/ticker?callback=?', function(data) {
// We can't use .return because return is a JavaScript keyword.
callback(data['return'].avg.value);
});
}
$(function () {
$(document).ready(function() {
getval( function ( value ) {
alert( 'Do something with ' + value + ' here!' );
} );
});
});
Here is JSFIddle link: http://jsfiddle.net/kf6qb/1/
Thank you very much!
(function () {
(document).ready(function() { getval( function ( value ) { alert( 'Do something with ' + value + ' here!' ); } ); }); });
Here is JSFIddle link: http://jsfiddle.net/kf6qb/1/
Thank you very much!
Hello,
I have created a samll sample which you can use for testing and should help you in achieving what you are trying.
<html> <head> <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script> <script type="text/javascript">
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