如何使用jquery加载图像？

Question

我这样做是为了加载图像并在对话框中显示图像.

<div id="image_preview" title="Client Photo Preview">
   <p><img src="" alt="client image" id="client_image_preview" /></p>
</div>

$("#client_image_preview").attr("src", imagelocation);

$('#image_preview').dialog({
    height: 'auto',
    width: 'auto',
    modal: true,
    dialogClass: 'titleless',
    buttons: { "CLOSE": function() { $(this).dialog("destroy"); } }
});

是否有方法显示加载gif图像加载jquery？

问候

Answer 1

在img标记中设置初始加载gif图像.然后使用javascript Image对象和onload事件预加载图像; 当目标图像做预压,更换src你的img,其URI标签.

<div id="image_preview" title="Client Photo Preview">
   <p><img src="loading.gif" alt="client image" id="client_image_preview" /></p>
</div>

var img = new Image();
img.onload = function() {
    $("#client_image_preview").attr("src", imagelocation);
}
img.src = imagelocation;

$('#image_preview').dialog({
    height: 'auto',
    width: 'auto',
    modal: true,
    dialogClass: 'titleless',
    buttons: { "CLOSE": function() { $(this).dialog("destroy"); } }
});