带有图片预览功能的上传表单，完整的HTML代码如下所示
%26lt;html%26gt;
%26lt;head%26gt;
%26lt;meta http-equiv="Content-Type" content="text/html; charset=gb2312"%26gt;
%26lt;title%26gt;带有图片预览功能的上传表单it.com.cn%26lt;/title%26gt;
%26lt;script%26gt;
function viewmypic(mypic,imgfile) {
if (imgfile.value){
mypic.src=imgfile.value;
mypic.style.display="";
mypic.border=1;
}
}
%26lt;/script%26gt;
%26lt;/head%26gt;
%26lt;body%26gt;
%26lt;center%26gt;
%26lt;form %26gt;
%26lt;input name="imgfile" type="file" id="imgfile" size="40" onchange="viewmypic(showimg,this.form.imgfile);" /%26gt;
%26lt;br /%26gt;
%26lt;/form%26gt;
%26lt;img name="showimg" id="showimg" src="" style="display:none;" alt="预览图片" /%26gt;
%26lt;br /%26gt;
%26lt;/div%26gt;
%26lt;div style="display:none"%26gt;
%26lt;/div%26gt;
%26lt;/center%26gt;
%26lt;/body%26gt;
%26lt;/html%26gt;