Implement a loading indicator for a jQuery AJAX call

前端未结

关注

 6  1394

I have a Bootstrap modal which is launched from a link. For about 3 seconds it just sits there blank, while the AJAX query fetches the data from the database. How can I impl

相关标签:

6条回答

情话喂你

2020-12-04 06:03

There is a global configuration using jQuery. This code runs on every global ajax request.

<div id='ajax_loader' style="position: fixed; left: 50%; top: 50%; display: none;">
    <img src="themes/img/ajax-loader.gif"></img>
</div>

<script type="text/javascript">
    jQuery(function ($){
        $(document).ajaxStop(function(){
            $("#ajax_loader").hide();
         });
         $(document).ajaxStart(function(){
             $("#ajax_loader").show();
         });    
    });    
</script>

Here is a demo: http://jsfiddle.net/sd01fdcm/

0 讨论(0)

时光取名叫无心

2020-12-04 06:12
I solved the same problem following this example:

This example uses the jQuery JavaScript library.

First, create an Ajax icon using the AjaxLoad site.
Then add the following to your HTML :
```
<img src="/images/loading.gif" id="loading-indicator" style="display:none" />
```
And the following to your CSS file:
```
#loading-indicator {
  position: absolute;
  left: 10px;
  top: 10px;
}
```
Lastly, you need to hook into the Ajax events that jQuery provides; one event handler for when the Ajax request begins, and one for when it ends:
```
$(document).ajaxSend(function(event, request, settings) {
    $('#loading-indicator').show();
});

$(document).ajaxComplete(function(event, request, settings) {
    $('#loading-indicator').hide();
});
```
This solution is from the following link. How to display an animated icon during Ajax request processing
0 讨论(0)
发布评论:

提交评论
- 加载中...

灰色年华

2020-12-04 06:17

This is how I realised the loading indicator by an Glyphicon:

<!DOCTYPE html>
<html>

<head>
    <title>Demo</title>

    <link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.6/css/bootstrap.min.css">
    <script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.12.4.min.js"></script>
    <script src="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.6/bootstrap.min.js"></script>

    <style>
        .gly-ani {
          animation: ani 2s infinite linear;
        }
        @keyframes ani {
          0% {
            transform: rotate(0deg);
          }
          100% {
            transform: rotate(359deg);
          }
        }
    </style>  
</head>

<body>
<div class="container">

    <span class="glyphicon glyphicon-refresh gly-ani" style="font-size:40px;"></span>

</div>
</body>

</html>

0 讨论(0)

猫巷女王i

2020-12-04 06:19
I'm guessing you're using jQuery.get or some other jQuery ajax function to load the modal. You can show the indicator before the ajax call, and hide it when the ajax completes. Something like
```
$('#indicator').show();
$('#someModal').get(anUrl, someData, function() { $('#indicator').hide(); });
```
0 讨论(0)
发布评论:

提交评论
- 加载中...

梦谈多话

2020-12-04 06:19

This is how I got it working with loading remote content that needs to be refreshed:

$(document).ready(function () {
    var loadingContent = '<div class="modal-header"><h1>Processing...</h1></div><div class="modal-body"><div class="progress progress-striped active"><div class="bar" style="width: 100%;"></div></div></div>';

    // This is need so the content gets replaced correctly.
    $("#myModal").on("show.bs.modal", function (e) {
        $(this).find(".modal-content").html(loadingContent);        
        var link = $(e.relatedTarget);
        $(this).find(".modal-content").load(link.attr("href"));
    });    

    $("#myModal2").on("hide.bs.modal", function (e) {
        $(this).removeData('bs.modal');
    });
});

Basically, just replace the modal content while it's loading with a loading message. The content will then be replaced once it's finished loading.

0 讨论(0)

醉酒成梦

2020-12-04 06:20

A loading indicator is simply an animated image (.gif) that is displayed until the completed event is called on the AJAX request. http://ajaxload.info/ offers many options for generating loading images that you can overlay on your modals. To my knowledge, Bootstrap does not provide the functionality built-in.

0 讨论(0)
发布评论:

提交评论
- 加载中...