swfupload在IE9中不显示上传按钮的问题

问题描述：

使用swfupload.js上传文件,在IE8、火狐、谷歌浏览器中显示正常，但是在IE9下不能显示上传按钮。

解决方法：

打开swfupload.js文件找到307行开始的如下代码：

// Private: getFlashHTML generates the object tag needed to embed the flash in to the document

SWFUpload.prototype.getFlashHTML =?function?(flashVersion) {

????// Flash Satay object syntax: http://www.alistapart.com/articles/flashsatay

????return?['<object id="',?this.movieName,?'" type="application/x-shockwave-flash" data="',(this.support.imageResize ??this.settings.flash_url :?this.settings.flash9_url),?'" width="',this.settings.button_width,?'" height="',?this.settings.button_height,?'" class="swfupload">',

????????????????'<param name="wmode" value="',?this.settings.button_window_mode,?'" />',208)"> ????????????????'<param name="movie" value="',(this.support.imageResize ?this.settings.flash_url :?this.settings.flash9_url),208)"> ????????????????'<param name="quality" value="high" />',208)"> ????????????????'<param name="allowScriptAccess" value="always" />',208)"> ????????????????'<param name="flashvars" value="'?+?this.getFlashVars() +?'" />',208)"> ????????????????'</object>'].join("");

};

?

将其替换为：

?

?

// Private: getFlashHTML generates the object tag needed to embed the flash in to the document

SWFUpload.prototype.getFlashHTML =?function?(flashVersion) {

???? ?

????//处理IE9中不显示上传按钮的情况

????var?classid =?"";

????var?Sys = {};

????var?ua = navigator.userAgent.toLowerCase();

????if?(window.ActiveXObject)

????????Sys.ie = ua.match(/msie ([d.]+)/)[1]

????if?(Sys.ie && Sys.ie.substring(0,1) ==?"9") {

????????classid =?' classid = "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"';

????}

????return?['<object',classid,?' id="',?this.settings.button_width,208)"> ????????????????'<param name="wmode" value="',208)"> ????????????????'<param name="movie" value="',208)"> ????????????????'<param name="quality" value="high" />',208)"> ????????????????'<param name="allowScriptAccess" value="always" />',208)"> ????????????????'<param name="flashvars" value="'?+?this.getFlashVars() +?'" />',208)"> ????????????????'</object>'].join("");

};

注：以上代码在IE7、IE8、IE9、火狐(Firefox 11.0)、谷歌（Google Chrome 17.0.963.83）浏览器中测试运行正常。

说明：修改前后的属性this.support.imageResize，不同的版本可能没有该属性。