在尝试上传图像文件时,今天遇到一个有趣的问题<使用dojo.io.iframe 2MB. 我调用了处理表单的函数,但在将表单发布到服务器之前,我收到以下错误： TypeError：ifd.getElementsByTagName(“textarea”)[0]未定义 我用于处理表单帖子的函数是：

function uploadnewlogo(){

var logoDiv = dojo.byId('userlogo');
var logoMsg = dojo.byId('uploadmesg');

//prep the io frame to send logo data.
dojo.io.iframe.send({
    url: "/users/profile/changelogo/",method: "post",handleAs: "text",form: dojo.byId('logoUploadFrm'),handle: function(data,ioArgs){

        var response = dojo.fromJson(data);


        if(response.status == 'success'){

            //first clear the image
            //dojo.style(logoDiv,"display","none");
            logoDiv.innerHTML = "";

            //then we update the image
            logoDiv.innerHTML = response.image;

        }else if(response.status == 'error'){

            logoMsg.innerHTML = data.mesg;

        }else{              

            logoMsg.innerHTML = '
logoMsg.innerHTML = '