Question

Im利用Jquery使用户能够以某种形式通过Ajax上载图像(在表格实际提交之前,图像上载重)。我增加了在上载的每一图像上添加一个水标的能力(在上载上:image.php)。

用户可以选择他们希望通过选择的形式将水标放在其形象的地方。使用Jquery s .val() gr取“水标志”的价值,选择并添加这一标记,作为将高载荷_image.php的加固值。

The problem is that it always passes the first select value no matter what I actually select in the form. I tried putting it in a function (thought it was grabbing the value on page load) no luck there. I changed the select to radio buttons. It still grabs the value of the first radio button on the page; no matter what you select.

本文所用文字部分是:

<script type="text/javascript" >
$(function(){

    // build URL to php upload script with watermark placement
    function setWatermark() {
        var uploadUrl =  http://www.mysite.com/upload_image.php?w= ;
        var watermarkValue = $( #watermark ).val();
        var watermarkUrl = uploadUrl + watermarkValue;
        return watermarkUrl;
    }

    var btnUpload=$( #upload );
    new AjaxUpload(btnUpload, {
        action: setWatermark(),
        name:  uploadfile ,
    });

});
</script>

这是形式(除去了无关的领域):

<form id="image_form" action="this_form.php" method="post" enctype="multipart/form-data">
    <select id="watermark">
        <option value="top_left">Top Left</option>
        <option value="top_right">Top Right</option>
        <option value="center">Center</option>
        <option value="bottom_left">Bottom Left</option>
        <option value="bottom_right">Bottom Right</option>
    </select>
    <div id="upload" ><span><img src="upload_button.jpg" /></span></div>
</form>

Answer 1

执行该守则:

new AjaxUpload(btnUpload, {
    action: setWatermark(),
    name:  uploadfile ,
});

浏览器首先必须构造这些论点,以便转给施工商。为了构造第二个论点,该标的必须是setWatermark,以获取>>>>>> 财产的价值。这就是你的问题所在;在创建<条码>AjaxUpload标时,正在打电话到<条码>。

我不知道<代码>AjaxUpload是什么,但你不得不找到一种办法,在需要<编码>action<<>code>时,将其称作功能,而不是将其作为选项中的一种固定功能。

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