标签：win onchange add iframe function 前端 tar img this
1、前端代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> .btn{ display: inline-block; padding: 5px 10px; background-color: coral; color: white; } </style> </head> <body> <iframe style="display: none" id="iframe1" name="ifra1"></iframe> <form id="fm1" action="/upload_img.html" method="POST" enctype="multipart/form-data" target="ifra1"> <input type="file" name="k1" onchange="uploadFile();" /> </form> <h3>预览</h3> <div id="preview"> </div> <script src="/static/js/jquery-3.1.1.js"></script> <script> //文件上传控件绑定onchange事件，当有文件上传就触发表单提交 function uploadFile() { document.getElementById(‘iframe1‘).onload = reloadIframe1; document.getElementById(‘fm1‘).submit(); } //取得iframe控件的返回值，并将值取出进行json反序列化， function reloadIframe1() { var content = this.contentWindow.document.body.innerHTML; var obj = JSON.parse(content); //创建img控件，并将远端的图片地址赋予image。 var tag = document.createElement(‘img‘); tag.src = obj.data; $(‘#preview‘).empty().append(tag); } </script> </body> </html>
2、后端代码
def upload_img(request): ret={‘status‘:True,‘data‘:None} obj = request.FILES.get(‘k1‘) print(obj) file_path = os.path.join(‘static‘,obj.name) f = open(file_path,‘wb‘) for line in obj.chunks(): f.write(line) f.close() ret[‘data‘]=file_path return HttpResponse(json.dumps(ret))
标签：win onchange add iframe function 前端 tar img this
原文地址：http://www.cnblogs.com/xiaoqianghuihui/p/7152055.html
