formdata

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a highly nested mongoDB set of objects and I want to count the number of subdocuments that match a given condition Edit: (in each document) . For example: {"_id":{"chr":"20","pos":"14371","ref":"A","alt":"G"}, "studies":[ { "study_id":"Study1", "samples":[ { "sample_id":"NA00001", "formatdata":[ {"GT":"1|0","GQ":48,"DP":8,"HQ":[51,51]} ] }, { "sample_id":"NA00002", "formatdata":[ {"GT":"0|0","GQ":48,"DP":8,"HQ":[51,51]} ] } ] } ] } {"_id":{"chr":"20","pos":"14372","ref":"T","alt":"AA"}, "studies":[ { "study_id":"Study3", "samples":[ {

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Today I came across an interesting bug, which took a good chunk of time to get to the bottom of. The setup A form on a page. On submit, the data gets captured and new FormData() object gets created with it. That object gets sent with and xhr request to an .php script, which then returns an ok / error message. The code looks something like this: ( simplified version, no need for fluff ) <form name="frm" id="frm" action="" method="post" onsubmit="save(event, this);" enctype="multipart/form-data"> <input name="name" id="name" type="text" value=

实现文件上传（即input标签的file类型），可以使用XMLHttpRequest对象中的upload属性的progress事件，该事件的事件对象可以返回上传进度相关数据 XMLHttpRequestObject.upload.onprogress = function(e){}; 其中e.loaded表示已经上传的数据大小，e.total表示整个文件的大小，用e.loaded除以e.total就可以获取上传的进度 那么该如何实现利用XHR传送表单呢？ 我们可以利用FormData类对象来对form表单快速转化为键值对的构造方式，并将其作为请求主题发送出去 如下 <form> <input type="text" name="username" > <input type="password" name="userpwd" > <input type="file" name="userfile" > <input type="button" value="提交"> </form> <script> var form = document.querySelector("form"); var formObj = new FormData(form); var xhr = new XMLHttpRequest(); xhr.open('post','data.php'); xhr

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using FormData to upload files. I also want to send an array of other data. When I send just the image, it works fine. When I append some text to the formdata, it works fine. When I try to attach the 'tags' array below, everything else works fine but no array is sent. Any known issues with FormData and appending arrays? Instantiate formData: formdata = new FormData(); The array I create. Console.log shows everything working fine. // Get the tags tags = new Array(); $('.tag-form').each(function(i){ article = $(this).find('input[name=

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a Java Spring MVC Web application as server. And AngularJS based application as client. In AngularJS, I have to upload a file and send to server. Here is my html Submit Here is my UploadController.js 'use strict'; var mainApp=angular.module('mainApp', ['ngCookies']); mainApp.controller('FileUploadController', function($scope, $http) { $scope.document = {}; $scope.setTitle = function(fileInput) { var file=fileInput.value; var filename = file.replace(/^.*[\\\/]/, ''); var title = filename.substr(0, filename.lastIndexOf('.')); $("#title"

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: Is the data:.. line below correct? I want to post the form data AND csrf token to a Django view function. $('#file-upload').on('change', function () { var currentpath = window.location.pathname; var formData = new FormData($('form')[0]); $.ajax({ url: currentpath, //server script to process data type: 'POST', data: {formData, 'csrfmiddlewaretoken': '{{ csrf_token }}'}, cache: false, contentType: false, processData: false }); }); 回答1: You have to add your parameters to the FormData object (using append ) and as always pass the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: from wtforms import Form, BooleanField, TextField, validators,PasswordField class LoginForm(Form): username = TextField('Username', [validators.Length(min=4, max=25)]) password = PasswordField('Password') when i use LoginForm on webapp(gae) like this : def post(self): form=LoginForm(self.request) but it show error : Traceback (most recent call last): File "D:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 513, in __call__ handler.post(*groups) File "D:\zjm_code\forum_blog_gae\main.py", line 189, in post

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to perform a pivot on an XML column in a table, where the XML contains multiple elements with a number of attributes. The attributes in each element is always the same, however the number of elements will vary. Let me give an example... FormEntryId | FormXML | DateCreated ==================================================================================== 1 |<Root> | 10/15/2009 | <Form> | | <FormData FieldName="Username" FieldValue="stevem" /> | | <FormData FieldName="FirstName" FieldValue="Steve" /> | | <FormData FieldName="LastName"

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've tried console.log and looping through it using for in . Here it the MDN Reference on FormData. Both attempts are in this fiddle . var fd = new FormData(), key; // poulate with dummy data fd.append("key1", "alskdjflasj"); fd.append("key2", "alskdjflasj"); // does not do anything useful console.log(fd); // does not do anything useful for(key in fd) { console.log(key); } How can I inspect form data to see what keys have been set. 回答1: Updated Method: As of March 2016, recent versions of Chrome and Firefox now support using FormData.entries

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Can you tell me whats wrong with this: var formdata = new FormData(); formdata.append("key", "value"); console.log(formdata); My output looks like this, I cant find my "key" - "value" pair FormData *__proto__: FormData **append: function append() { [native code] } ***arguments: null ***caller: null ***length: 0 ***name: "append" ***prototype: append ***__proto__: function Empty() {} *constructor: function FormData() { [native code] } **arguments: null **caller: null **length: 0 **name: "FormData" **prototype: FormData **toString: function