错误 404（未找到）是什么意思

Question

I have created a small web site, where I am showing some data, which I get from an API (JSON data type). In my console I am getting these two errors:

1) GET http://fonts.gstatic.com/s/opensans/v10/u-WUoqrET9fUeobQW7jkRRJtnKITppOI_IvcXXDNrsc.woff2 404 (Not Found)

error 1) is in my code pointing to this line of code:

<script src="https://maps.googleapis.com/maps/api/js"></script>

2) GET http://localhost/[object%20Event] 404 (Not Found)

and error 2) is in my code pointing on this line of code:

function getData(url){
    return $.ajax({
        type: 'GET',
        dataType: 'json',
        url: url
    });
}

Any idea what these errors mean? These particular errors have no effect on the site; the site is still working and showing all data.

Answer 1

The 404 code means that the server was unable to locate the files you were looking for via GET request.

You might try adding the text/javascript type to your tags, as the examples for google maps api do.

ie:

 <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js"></script>

As far as the second problem you encountered, it looks like the url you passed into the getData() function was invalid.

Answer 2

ajax is asynchronous request means that you cant return it when it is in progress so if you want return any thing from ajax you must call it's events like success and error .so your code must like below:

function getData(url){  
    $.ajax({
        type: 'GET',
        dataType: 'json',
        url: url,

        success: function(data){
          return data;
        },

        error: function(data){
          console.log(data.responseText);
        }
    });
}