jquery:ajax加载内容全部加载时的事件(包括图像)

Question

我正在通过ajax加载一些html,我需要一个事件来捕捉新图像加载时...

因为它在div而不是整页,我不能使用 $(window).load(....

我尝试了以下但它不起作用:

$('.banners_col img:last').load(function(){.....

Answer 1

在将它们插入dom之前,您需要定位ajax调用的结果.

因此,您需要使用jQuery提供的回调方法.

$('#load').click(function(){
    // inside the handler that calls the ajax

    //you ajax call here
    $.get('the_url_to_fetch',function(data){

        // create an in-memory DOM element, and insert the ajax results
        var $live = $('<div>').html(data);

        // apply a load method to the images in the ajax results
        $('img',$live).load(function(){
           // what to do for each image that is loaded
        });

        // add the ajax results in the DOM
        $('selector_where_to_put_the_response').html($live.children());
    });

});

http://www.jsfiddle.net/gaby/Sj7y2/上的示例

如果ajax响应中有多个图像,并且您希望在加载所有图像时收到通知,则使用此略微修改的版本

$('#load').click(function(){
    // inside the handler that calls the ajax

    //you ajax call here
    $.get('the_url_to_fetch',function(data){

        // create an in-memory DOM element, and insert the ajax results
        var $live = $('<div>').html(data);
        // count the number of images
        var imgCount = $live.find('img').length;

        // apply a load method to the images in the ajax results
        $('img',$live).load(function(){
           // what to do for each image that is loaded

           imgCount--;
           if (imgCount==0)
           {
               // the code in here is called when all images have loaded.
           }
        });

        // add the ajax results in the DOM
        $('selector_where_to_put_the_response').html($live.children());
    });

});

http://www.jsfiddle.net/gaby/Sj7y2/1/上的示例

如果删除注释和空行,则代码不多:)所以不要被吓倒..