显示从Ajax请求获取数据 [英] Getting Data from Ajax request displayed

问题描述

我已经阅读了这篇文章如何做我从异步调用返回响应吗?但是我无法提出解决方案. 我正在执行ajax请求

I've already read this article How do I return the response from an asynchronous call? However I couldn't come up with a solution. I'm doing an ajax request

function getdata(url) 
 {
 console.log('Started');
 jQuery.ajax({
 type: "GET",
 url: "http://myserver.com/myscript.php",
 dataType: "json",
 error: function (xhr) {
    console.log('Error',xhr.status);
        },
 success: function (response) {
   console.log('Success',response);

         }
    });
 }

控制台显示的一切正常，但是当我说

And Console displays everything fine but when I say

var chinese = getdata();

获取数据.我不断得到:

to get the data. I keep getting:

未捕获的TypeError:无法读取此行的未定义错误的属性"length"

Uncaught TypeError: Cannot read property 'length' of undefined error for this line

var text = chinese[Math.floor(Math.random()*chinese.length)];

有人可以在这里帮助我吗?

Can anybody help me here?

推荐答案

问题是您使用的是异步方法，希望获得同步结果.

The problem is that you are using an asynchronous method expecting a synchronous result.

因此，您应该在异步调用的结果中使用以下代码:

Therefore you should use the code in the result of the asynchronous call like the following:

function getdata(url) {
  console.log('Started');
  jQuery.ajax({
    type: 'GET',
    url: url,
    dataType: 'json',
    error: function(xhr) {
      console.log('Error', xhr.status);
    },
    success: function(chinese) {
      var text = chinese[Math.floor(Math.random()*chinese.length)];
      // Do something else with text
    }
  });
}

getData('http://myserver.com/myscript.php');

我希望它会有所帮助:)

I hope it helps :)

这篇关于显示从Ajax请求获取数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！